diff --git a/archivebox/api/v1_core.py b/archivebox/api/v1_core.py
index 766ee9c6..f49f05af 100644
--- a/archivebox/api/v1_core.py
+++ b/archivebox/api/v1_core.py
@@ -300,3 +300,160 @@ def get_any(request, id: str):
         pass
 
     raise HttpError(404, 'Object with given ID not found')
+
+
+### Tag Editor API Endpoints #########################################################################
+
+class TagAutocompleteSchema(Schema):
+    tags: List[dict]
+
+
+class TagCreateSchema(Schema):
+    name: str
+
+
+class TagCreateResponseSchema(Schema):
+    success: bool
+    tag_id: int
+    tag_name: str
+    created: bool
+
+
+class TagSnapshotRequestSchema(Schema):
+    snapshot_id: str
+    tag_name: Optional[str] = None
+    tag_id: Optional[int] = None
+
+
+class TagSnapshotResponseSchema(Schema):
+    success: bool
+    tag_id: int
+    tag_name: str
+
+
+@router.get("/tags/autocomplete/", response=TagAutocompleteSchema, url_name="tags_autocomplete")
+def tags_autocomplete(request, q: str = ""):
+    """Return tags matching the query for autocomplete."""
+    if not q:
+        # Return all tags if no query (limited to 50)
+        tags = Tag.objects.all().order_by('name')[:50]
+    else:
+        tags = Tag.objects.filter(name__icontains=q).order_by('name')[:20]
+
+    return {
+        'tags': [{'id': tag.pk, 'name': tag.name, 'slug': tag.slug} for tag in tags]
+    }
+
+
+@router.post("/tags/create/", response=TagCreateResponseSchema, url_name="tags_create")
+def tags_create(request, data: TagCreateSchema):
+    """Create a new tag or return existing one."""
+    name = data.name.strip()
+    if not name:
+        raise HttpError(400, 'Tag name is required')
+
+    tag, created = Tag.objects.get_or_create(
+        name__iexact=name,
+        defaults={
+            'name': name,
+            'created_by': request.user if request.user.is_authenticated else None,
+        }
+    )
+
+    # If found by case-insensitive match, use that tag
+    if not created:
+        tag = Tag.objects.filter(name__iexact=name).first()
+
+    return {
+        'success': True,
+        'tag_id': tag.pk,
+        'tag_name': tag.name,
+        'created': created,
+    }
+
+
+@router.post("/tags/add-to-snapshot/", response=TagSnapshotResponseSchema, url_name="tags_add_to_snapshot")
+def tags_add_to_snapshot(request, data: TagSnapshotRequestSchema):
+    """Add a tag to a snapshot. Creates the tag if it doesn't exist."""
+    # Get the snapshot
+    try:
+        snapshot = Snapshot.objects.get(
+            Q(id__startswith=data.snapshot_id) | Q(timestamp__startswith=data.snapshot_id)
+        )
+    except Snapshot.DoesNotExist:
+        raise HttpError(404, 'Snapshot not found')
+    except Snapshot.MultipleObjectsReturned:
+        snapshot = Snapshot.objects.filter(
+            Q(id__startswith=data.snapshot_id) | Q(timestamp__startswith=data.snapshot_id)
+        ).first()
+
+    # Get or create the tag
+    if data.tag_name:
+        name = data.tag_name.strip()
+        if not name:
+            raise HttpError(400, 'Tag name is required')
+
+        tag, _ = Tag.objects.get_or_create(
+            name__iexact=name,
+            defaults={
+                'name': name,
+                'created_by': request.user if request.user.is_authenticated else None,
+            }
+        )
+        # If found by case-insensitive match, use that tag
+        tag = Tag.objects.filter(name__iexact=name).first() or tag
+    elif data.tag_id:
+        try:
+            tag = Tag.objects.get(pk=data.tag_id)
+        except Tag.DoesNotExist:
+            raise HttpError(404, 'Tag not found')
+    else:
+        raise HttpError(400, 'Either tag_name or tag_id is required')
+
+    # Add the tag to the snapshot
+    snapshot.tags.add(tag)
+
+    return {
+        'success': True,
+        'tag_id': tag.pk,
+        'tag_name': tag.name,
+    }
+
+
+@router.post("/tags/remove-from-snapshot/", response=TagSnapshotResponseSchema, url_name="tags_remove_from_snapshot")
+def tags_remove_from_snapshot(request, data: TagSnapshotRequestSchema):
+    """Remove a tag from a snapshot."""
+    # Get the snapshot
+    try:
+        snapshot = Snapshot.objects.get(
+            Q(id__startswith=data.snapshot_id) | Q(timestamp__startswith=data.snapshot_id)
+        )
+    except Snapshot.DoesNotExist:
+        raise HttpError(404, 'Snapshot not found')
+    except Snapshot.MultipleObjectsReturned:
+        snapshot = Snapshot.objects.filter(
+            Q(id__startswith=data.snapshot_id) | Q(timestamp__startswith=data.snapshot_id)
+        ).first()
+
+    # Get the tag
+    if data.tag_id:
+        try:
+            tag = Tag.objects.get(pk=data.tag_id)
+        except Tag.DoesNotExist:
+            raise HttpError(404, 'Tag not found')
+    elif data.tag_name:
+        try:
+            tag = Tag.objects.get(name__iexact=data.tag_name.strip())
+        except Tag.DoesNotExist:
+            raise HttpError(404, 'Tag not found')
+    else:
+        raise HttpError(400, 'Either tag_name or tag_id is required')
+
+    # Remove the tag from the snapshot
+    snapshot.tags.remove(tag)
+
+    return {
+        'success': True,
+        'tag_id': tag.pk,
+        'tag_name': tag.name,
+    }
diff --git a/archivebox/core/admin_snapshots.py b/archivebox/core/admin_snapshots.py
index f8662fc3..e5f972da 100644
--- a/archivebox/core/admin_snapshots.py
+++ b/archivebox/core/admin_snapshots.py
@@ -11,7 +11,6 @@ from django.utils import timezone
 from django import forms
 from django.template import Template, RequestContext
 from django.contrib.admin.helpers import ActionForm
-from django.contrib.admin.widgets import FilteredSelectMultiple
 
 from archivebox.config import DATA_DIR
 from archivebox.config.common import SERVER_CONFIG
@@ -24,8 +23,8 @@ from archivebox.base_models.admin import BaseModelAdmin, ConfigEditorMixin
 from archivebox.workers.tasks import bg_archive_snapshots, bg_add
 
 from archivebox.core.models import Tag, Snapshot
-from archivebox.core.admin_tags import TagInline
 from archivebox.core.admin_archiveresults import ArchiveResultInline, render_archiveresults_list
+from archivebox.core.widgets import TagEditorWidget, InlineTagEditorWidget
 
 
 # GLOBAL_CONTEXT = {'VERSION': VERSION, 'VERSIONS_AVAILABLE': [], 'CAN_UPGRADE': False}
@@ -36,16 +35,30 @@ class SnapshotActionForm(ActionForm):
     def __init__(self, *args, **kwargs):
         super().__init__(*args, **kwargs)
         # Define tags field in __init__ to avoid database access during app initialization
-        self.fields['tags'] = forms.ModelMultipleChoiceField(
+        self.fields['tags'] = forms.CharField(
             label='Edit tags',
-            queryset=Tag.objects.all(),
             required=False,
-            widget=FilteredSelectMultiple(
-                'core_tag__name',
-                False,
-            ),
+            widget=TagEditorWidget(),
         )
 
+    def clean_tags(self):
+        """Parse comma-separated tag names into Tag objects."""
+        tags_str = self.cleaned_data.get('tags', '')
+        if not tags_str:
+            return []
+
+        tag_names = [name.strip() for name in tags_str.split(',') if name.strip()]
+        tags = []
+        for name in tag_names:
+            tag, _ = Tag.objects.get_or_create(
+                name__iexact=name,
+                defaults={'name': name}
+            )
+            # Use the existing tag if found by case-insensitive match
+            tag = Tag.objects.filter(name__iexact=name).first() or tag
+            tags.append(tag)
+        return tags
+
     # TODO: allow selecting actions for specific extractor plugins? is this useful?
     # plugin = forms.ChoiceField(
     #     choices=ArchiveResult.PLUGIN_CHOICES,
@@ -54,10 +67,59 @@ class SnapshotActionForm(ActionForm):
     # )
 
 
+class SnapshotAdminForm(forms.ModelForm):
+    """Custom form for Snapshot admin with tag editor widget."""
+    tags_editor = forms.CharField(
+        label='Tags',
+        required=False,
+        widget=TagEditorWidget(),
+        help_text='Type tag names and press Enter or Space to add. Click × to remove.',
+    )
+
+    class Meta:
+        model = Snapshot
+        fields = '__all__'
+
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        # Initialize tags_editor with current tags
+        if self.instance and self.instance.pk:
+            self.initial['tags_editor'] = ','.join(
+                sorted(tag.name for tag in self.instance.tags.all())
+            )
+
+    def save(self, commit=True):
+        instance = super().save(commit=False)
+
+        # Handle tags_editor field
+        if commit:
+            instance.save()
+            self._save_m2m()
+
+            # Parse and save tags from tags_editor
+            tags_str = self.cleaned_data.get('tags_editor', '')
+            if tags_str:
+                tag_names = [name.strip() for name in tags_str.split(',') if name.strip()]
+                tags = []
+                for name in tag_names:
+                    tag, _ = Tag.objects.get_or_create(
+                        name__iexact=name,
+                        defaults={'name': name}
+                    )
+                    tag = Tag.objects.filter(name__iexact=name).first() or tag
+                    tags.append(tag)
+                instance.tags.set(tags)
+            else:
+                instance.tags.clear()
+
+        return instance
+
+
 class SnapshotAdmin(SearchResultsAdminMixin, ConfigEditorMixin, BaseModelAdmin):
+    form = SnapshotAdminForm
     list_display = ('created_at', 'title_str', 'status', 'files', 'size', 'url_str')
     sort_fields = ('title_str', 'url_str', 'created_at', 'status', 'crawl')
-    readonly_fields = ('admin_actions', 'status_info', 'tags_str', 'imported_timestamp', 'created_at', 'modified_at', 'downloaded_at', 'output_dir', 'archiveresults_list')
+    readonly_fields = ('admin_actions', 'status_info', 'imported_timestamp', 'created_at', 'modified_at', 'downloaded_at', 'output_dir', 'archiveresults_list')
     search_fields = ('id', 'url', 'timestamp', 'title', 'tags__name')
     list_filter = ('created_at', 'downloaded_at', 'archiveresult__status', 'crawl__created_by', 'tags__name')
 
@@ -66,6 +128,10 @@ class SnapshotAdmin(SearchResultsAdminMixin, ConfigEditorMixin, BaseModelAdmin):
             'fields': ('url', 'title'),
             'classes': ('card', 'wide'),
         }),
+        ('Tags', {
+            'fields': ('tags_editor',),
+            'classes': ('card',),
+        }),
         ('Status', {
             'fields': ('status', 'retry_at', 'status_info'),
             'classes': ('card',),
@@ -75,7 +141,7 @@ class SnapshotAdmin(SearchResultsAdminMixin, ConfigEditorMixin, BaseModelAdmin):
             'classes': ('card',),
         }),
         ('Relations', {
-            'fields': ('crawl', 'tags_str'),
+            'fields': ('crawl',),
             'classes': ('card',),
         }),
         ('Config', {
@@ -98,7 +164,7 @@ class SnapshotAdmin(SearchResultsAdminMixin, ConfigEditorMixin, BaseModelAdmin):
 
     ordering = ['-created_at']
     actions = ['add_tags', 'remove_tags', 'update_titles', 'update_snapshots', 'resnapshot_snapshot', 'overwrite_snapshots', 'delete_snapshots']
-    inlines = [TagInline]  # Removed ArchiveResultInline, using custom renderer instead
+    inlines = []  # Removed TagInline, using TagEditorWidget instead
     list_per_page = min(max(5, SERVER_CONFIG.SNAPSHOTS_PER_PAGE), 5000)
 
     action_form = SnapshotActionForm
@@ -257,11 +323,15 @@ class SnapshotAdmin(SearchResultsAdminMixin, ConfigEditorMixin, BaseModelAdmin):
         ordering='title',
     )
     def title_str(self, obj):
-        tags = ''.join(
-            format_html('<a href="/admin/core/snapshot/?tags__id__exact={}"><span class="tag">{}</span></a> ', tag.pk, tag.name)
-            for tag in obj.tags.all()
-            if str(tag.name).strip()
+        # Render inline tag editor widget
+        widget = InlineTagEditorWidget(snapshot_id=str(obj.pk))
+        tags_html = widget.render(
+            name=f'tags_{obj.pk}',
+            value=obj.tags.all(),
+            attrs={'id': f'tags_{obj.pk}'},
+            snapshot_id=str(obj.pk),
         )
+
         # Show title if available, otherwise show URL
         display_text = obj.title or obj.url
         css_class = 'fetched' if obj.title else 'pending'
@@ -278,7 +348,7 @@ class SnapshotAdmin(SearchResultsAdminMixin, ConfigEditorMixin, BaseModelAdmin):
             obj.archive_path,
             css_class,
             urldecode(htmldecode(display_text))[:128]
-        ) + mark_safe(f' <span class="tags">{tags}</span>')
+        ) + mark_safe(f' <span class="tags-inline-editor">{tags_html}</span>')
 
     @admin.display(
         description='Files Saved',
@@ -428,13 +498,41 @@ class SnapshotAdmin(SearchResultsAdminMixin, ConfigEditorMixin, BaseModelAdmin):
         description="+"
     )
     def add_tags(self, request, queryset):
-        tags = request.POST.getlist('tags')
-        print('[+] Adding tags', tags, 'to Snapshots', queryset)
-        for obj in queryset:
-            obj.tags.add(*tags)
+        from archivebox.core.models import SnapshotTag
+
+        # Get tags from the form - now comma-separated string
+        tags_str = request.POST.get('tags', '')
+        if not tags_str:
+            messages.warning(request, "No tags specified.")
+            return
+
+        # Parse comma-separated tag names and get/create Tag objects
+        tag_names = [name.strip() for name in tags_str.split(',') if name.strip()]
+        tags = []
+        for name in tag_names:
+            tag, _ = Tag.objects.get_or_create(
+                name__iexact=name,
+                defaults={'name': name}
+            )
+            tag = Tag.objects.filter(name__iexact=name).first() or tag
+            tags.append(tag)
+
+        # Get snapshot IDs efficiently (works with select_across for all pages)
+        snapshot_ids = list(queryset.values_list('id', flat=True))
+        num_snapshots = len(snapshot_ids)
+
+        print('[+] Adding tags', [t.name for t in tags], 'to', num_snapshots, 'Snapshots')
+
+        # Bulk create M2M relationships (1 query per tag, not per snapshot)
+        for tag in tags:
+            SnapshotTag.objects.bulk_create(
+                [SnapshotTag(snapshot_id=sid, tag=tag) for sid in snapshot_ids],
+                ignore_conflicts=True  # Skip if relationship already exists
+            )
+
         messages.success(
             request,
-            f"Added {len(tags)} tags to {queryset.count()} Snapshots.",
+            f"Added {len(tags)} tag(s) to {num_snapshots} Snapshot(s).",
         )
 
 
@@ -442,11 +540,40 @@ class SnapshotAdmin(SearchResultsAdminMixin, ConfigEditorMixin, BaseModelAdmin):
         description="–"
     )
     def remove_tags(self, request, queryset):
-        tags = request.POST.getlist('tags')
-        print('[-] Removing tags', tags, 'to Snapshots', queryset)
-        for obj in queryset:
-            obj.tags.remove(*tags)
+        from archivebox.core.models import SnapshotTag
+
+        # Get tags from the form - now comma-separated string
+        tags_str = request.POST.get('tags', '')
+        if not tags_str:
+            messages.warning(request, "No tags specified.")
+            return
+
+        # Parse comma-separated tag names and find matching Tag objects (case-insensitive)
+        tag_names = [name.strip() for name in tags_str.split(',') if name.strip()]
+        tags = []
+        for name in tag_names:
+            tag = Tag.objects.filter(name__iexact=name).first()
+            if tag:
+                tags.append(tag)
+
+        if not tags:
+            messages.warning(request, "No matching tags found.")
+            return
+
+        # Get snapshot IDs efficiently (works with select_across for all pages)
+        snapshot_ids = list(queryset.values_list('id', flat=True))
+        num_snapshots = len(snapshot_ids)
+        tag_ids = [t.pk for t in tags]
+
+        print('[-] Removing tags', [t.name for t in tags], 'from', num_snapshots, 'Snapshots')
+
+        # Bulk delete M2M relationships (1 query total, not per snapshot)
+        deleted_count, _ = SnapshotTag.objects.filter(
+            snapshot_id__in=snapshot_ids,
+            tag_id__in=tag_ids
+        ).delete()
+
         messages.success(
             request,
-            f"Removed {len(tags)} tags from {queryset.count()} Snapshots.",
+            f"Removed {len(tags)} tag(s) from {num_snapshots} Snapshot(s) ({deleted_count} associations deleted).",
         )
diff --git a/archivebox/core/widgets.py b/archivebox/core/widgets.py
new file mode 100644
index 00000000..433f5c93
--- /dev/null
+++ b/archivebox/core/widgets.py
@@ -0,0 +1,512 @@
+__package__ = 'archivebox.core'
+
+import json
+from django import forms
+from django.utils.html import escape
+
+
+class TagEditorWidget(forms.Widget):
+    """
+    A widget that renders tags as clickable pills with inline editing.
+    - Displays existing tags alphabetically as styled pills with X remove button
+    - Text input with HTML5 datalist for autocomplete suggestions
+    - Press Enter or Space to create new tags (auto-creates if doesn't exist)
+    - Uses AJAX for autocomplete and tag creation
+    """
+    template_name = None  # We render manually
+
+    class Media:
+        css = {'all': []}
+        js = []
+
+    def __init__(self, attrs=None, snapshot_id=None):
+        self.snapshot_id = snapshot_id
+        super().__init__(attrs)
+
+    def _escape(self, value):
+        """Escape HTML entities in value."""
+        return escape(str(value)) if value else ''
+
+    def render(self, name, value, attrs=None, renderer=None):
+        """
+        Render the tag editor widget.
+
+        Args:
+            name: Field name
+            value: Can be:
+                - QuerySet of Tag objects (from M2M field)
+                - List of tag names
+                - Comma-separated string of tag names
+                - None
+            attrs: HTML attributes
+            renderer: Not used
+        """
+        # Parse value to get list of tag names
+        tags = []
+        if value:
+            if hasattr(value, 'all'):  # QuerySet
+                tags = sorted([tag.name for tag in value.all()])
+            elif isinstance(value, (list, tuple)):
+                if value and hasattr(value[0], 'name'):  # List of Tag objects
+                    tags = sorted([tag.name for tag in value])
+                else:  # List of strings or IDs
+                    # Could be tag IDs from form submission
+                    from archivebox.core.models import Tag
+                    tag_names = []
+                    for v in value:
+                        if isinstance(v, str) and not v.isdigit():
+                            tag_names.append(v)
+                        else:
+                            try:
+                                tag = Tag.objects.get(pk=v)
+                                tag_names.append(tag.name)
+                            except (Tag.DoesNotExist, ValueError):
+                                if isinstance(v, str):
+                                    tag_names.append(v)
+                    tags = sorted(tag_names)
+            elif isinstance(value, str):
+                tags = sorted([t.strip() for t in value.split(',') if t.strip()])
+
+        widget_id = attrs.get('id', name) if attrs else name
+
+        # Build pills HTML
+        pills_html = ''
+        for tag in tags:
+            pills_html += f'''
+                <span class="tag-pill" data-tag="{self._escape(tag)}">
+                    {self._escape(tag)}
+                    <button type="button" class="tag-remove-btn" data-tag-name="{self._escape(tag)}">&times;</button>
+                </span>
+            '''
+
+        # Build the widget HTML
+        html = f'''
+        <div id="{widget_id}_container" class="tag-editor-container" onclick="focusTagInput_{widget_id}(event)">
+            <div id="{widget_id}_pills" class="tag-pills">
+                {pills_html}
+            </div>
+            <input type="text"
+                   id="{widget_id}_input"
+                   class="tag-inline-input"
+                   list="{widget_id}_datalist"
+                   placeholder="Add tag..."
+                   autocomplete="off"
+                   onkeydown="handleTagKeydown_{widget_id}(event)"
+                   oninput="fetchTagAutocomplete_{widget_id}(this.value)"
+            >
+            <datalist id="{widget_id}_datalist"></datalist>
+            <input type="hidden" name="{name}" id="{widget_id}" value="{self._escape(','.join(tags))}">
+        </div>
+
+        <script>
+        (function() {{
+            var currentTags_{widget_id} = {json.dumps(tags)};
+            var autocompleteTimeout_{widget_id} = null;
+
+            window.focusTagInput_{widget_id} = function(event) {{
+                if (event.target.classList.contains('tag-remove-btn')) return;
+                document.getElementById('{widget_id}_input').focus();
+            }};
+
+            window.updateHiddenInput_{widget_id} = function() {{
+                document.getElementById('{widget_id}').value = currentTags_{widget_id}.join(',');
+            }};
+
+            window.addTag_{widget_id} = function(tagName) {{
+                tagName = tagName.trim();
+                if (!tagName) return;
+
+                // Check if tag already exists (case-insensitive)
+                var exists = currentTags_{widget_id}.some(function(t) {{
+                    return t.toLowerCase() === tagName.toLowerCase();
+                }});
+                if (exists) {{
+                    document.getElementById('{widget_id}_input').value = '';
+                    return;
+                }}
+
+                // Add to current tags
+                currentTags_{widget_id}.push(tagName);
+                currentTags_{widget_id}.sort(function(a, b) {{
+                    return a.toLowerCase().localeCompare(b.toLowerCase());
+                }});
+
+                // Rebuild pills
+                rebuildPills_{widget_id}();
+                updateHiddenInput_{widget_id}();
+
+                // Clear input
+                document.getElementById('{widget_id}_input').value = '';
+
+                // Create tag via API if it doesn't exist (fire and forget)
+                fetch('/api/v1/core/tags/create/', {{
+                    method: 'POST',
+                    headers: {{
+                        'Content-Type': 'application/json',
+                        'X-CSRFToken': getCSRFToken()
+                    }},
+                    body: JSON.stringify({{ name: tagName }})
+                }}).catch(function(err) {{
+                    console.log('Tag creation note:', err);
+                }});
+            }};
+
+            window.removeTag_{widget_id} = function(tagName) {{
+                currentTags_{widget_id} = currentTags_{widget_id}.filter(function(t) {{
+                    return t.toLowerCase() !== tagName.toLowerCase();
+                }});
+                rebuildPills_{widget_id}();
+                updateHiddenInput_{widget_id}();
+            }};
+
+            window.rebuildPills_{widget_id} = function() {{
+                var container = document.getElementById('{widget_id}_pills');
+                container.innerHTML = '';
+                currentTags_{widget_id}.forEach(function(tag) {{
+                    var pill = document.createElement('span');
+                    pill.className = 'tag-pill';
+                    pill.setAttribute('data-tag', tag);
+
+                    var tagText = document.createTextNode(tag);
+                    pill.appendChild(tagText);
+
+                    var removeBtn = document.createElement('button');
+                    removeBtn.type = 'button';
+                    removeBtn.className = 'tag-remove-btn';
+                    removeBtn.setAttribute('data-tag-name', tag);
+                    removeBtn.innerHTML = '&times;';
+                    pill.appendChild(removeBtn);
+
+                    container.appendChild(pill);
+                }});
+            }};
+
+            // Add event delegation for remove buttons
+            document.getElementById('{widget_id}_pills').addEventListener('click', function(event) {{
+                if (event.target.classList.contains('tag-remove-btn')) {{
+                    var tagName = event.target.getAttribute('data-tag-name');
+                    if (tagName) {{
+                        removeTag_{widget_id}(tagName);
+                    }}
+                }}
+            }});
+
+            window.handleTagKeydown_{widget_id} = function(event) {{
+                var input = event.target;
+                var value = input.value.trim();
+
+                if (event.key === 'Enter' || event.key === ' ' || event.key === ',') {{
+                    event.preventDefault();
+                    if (value) {{
+                        // Handle comma-separated values
+                        value.split(',').forEach(function(tag) {{
+                            addTag_{widget_id}(tag.trim());
+                        }});
+                    }}
+                }} else if (event.key === 'Backspace' && !value && currentTags_{widget_id}.length > 0) {{
+                    // Remove last tag on backspace when input is empty
+                    var lastTag = currentTags_{widget_id}.pop();
+                    rebuildPills_{widget_id}();
+                    updateHiddenInput_{widget_id}();
+                }}
+            }};
+
+            window.fetchTagAutocomplete_{widget_id} = function(query) {{
+                if (autocompleteTimeout_{widget_id}) {{
+                    clearTimeout(autocompleteTimeout_{widget_id});
+                }}
+
+                autocompleteTimeout_{widget_id} = setTimeout(function() {{
+                    if (!query || query.length < 1) {{
+                        document.getElementById('{widget_id}_datalist').innerHTML = '';
+                        return;
+                    }}
+
+                    fetch('/api/v1/core/tags/autocomplete/?q=' + encodeURIComponent(query))
+                        .then(function(response) {{ return response.json(); }})
+                        .then(function(data) {{
+                            var datalist = document.getElementById('{widget_id}_datalist');
+                            datalist.innerHTML = '';
+                            (data.tags || []).forEach(function(tag) {{
+                                var option = document.createElement('option');
+                                option.value = tag.name;
+                                datalist.appendChild(option);
+                            }});
+                        }})
+                        .catch(function(err) {{
+                            console.log('Autocomplete error:', err);
+                        }});
+                }}, 150);
+            }};
+
+            function escapeHtml(text) {{
+                var div = document.createElement('div');
+                div.textContent = text;
+                return div.innerHTML;
+            }}
+
+            function getCSRFToken() {{
+                var cookies = document.cookie.split(';');
+                for (var i = 0; i < cookies.length; i++) {{
+                    var cookie = cookies[i].trim();
+                    if (cookie.startsWith('csrftoken=')) {{
+                        return cookie.substring('csrftoken='.length);
+                    }}
+                }}
+                // Fallback to hidden input
+                var input = document.querySelector('input[name="csrfmiddlewaretoken"]');
+                return input ? input.value : '';
+            }}
+        }})();
+        </script>
+        '''
+
+        return html
+
+
+class InlineTagEditorWidget(TagEditorWidget):
+    """
+    Inline version of TagEditorWidget for use in list views.
+    Includes AJAX save functionality for immediate persistence.
+    """
+
+    def __init__(self, attrs=None, snapshot_id=None):
+        super().__init__(attrs, snapshot_id)
+        self.snapshot_id = snapshot_id
+
+    def render(self, name, value, attrs=None, renderer=None, snapshot_id=None):
+        """Render inline tag editor with AJAX save."""
+        # Use snapshot_id from __init__ or from render call
+        snapshot_id = snapshot_id or self.snapshot_id
+
+        # Parse value to get list of tag dicts with id and name
+        tags = []
+        tag_data = []
+        if value:
+            if hasattr(value, 'all'):  # QuerySet
+                for tag in value.all():
+                    tag_data.append({'id': tag.pk, 'name': tag.name})
+                tag_data.sort(key=lambda x: x['name'].lower())
+                tags = [t['name'] for t in tag_data]
+            elif isinstance(value, (list, tuple)):
+                if value and hasattr(value[0], 'name'):
+                    for tag in value:
+                        tag_data.append({'id': tag.pk, 'name': tag.name})
+                    tag_data.sort(key=lambda x: x['name'].lower())
+                    tags = [t['name'] for t in tag_data]
+
+        widget_id = f"inline_tags_{snapshot_id}" if snapshot_id else (attrs.get('id', name) if attrs else name)
+
+        # Build pills HTML with filter links
+        pills_html = ''
+        for td in tag_data:
+            pills_html += f'''
+                <span class="tag-pill" data-tag="{self._escape(td['name'])}" data-tag-id="{td['id']}">
+                    <a href="/admin/core/snapshot/?tags__id__exact={td['id']}" class="tag-link">{self._escape(td['name'])}</a>
+                    <button type="button" class="tag-remove-btn" data-tag-id="{td['id']}" data-tag-name="{self._escape(td['name'])}">&times;</button>
+                </span>
+            '''
+
+        html = f'''
+        <span id="{widget_id}_container" class="tag-editor-inline" onclick="focusInlineTagInput_{widget_id}(event)">
+            <span id="{widget_id}_pills" class="tag-pills-inline">
+                {pills_html}
+            </span>
+            <input type="text"
+                   id="{widget_id}_input"
+                   class="tag-inline-input-sm"
+                   list="{widget_id}_datalist"
+                   placeholder="+"
+                   autocomplete="off"
+                   onkeydown="handleInlineTagKeydown_{widget_id}(event)"
+                   oninput="fetchInlineTagAutocomplete_{widget_id}(this.value)"
+                   onfocus="this.placeholder='add tag...'"
+                   onblur="this.placeholder='+'"
+            >
+            <datalist id="{widget_id}_datalist"></datalist>
+        </span>
+
+        <script>
+        (function() {{
+            var snapshotId_{widget_id} = '{snapshot_id}';
+            var currentTagData_{widget_id} = {json.dumps(tag_data)};
+            var autocompleteTimeout_{widget_id} = null;
+
+            window.focusInlineTagInput_{widget_id} = function(event) {{
+                event.stopPropagation();
+                if (event.target.classList.contains('tag-remove-btn') || event.target.classList.contains('tag-link')) return;
+                document.getElementById('{widget_id}_input').focus();
+            }};
+
+            window.addInlineTag_{widget_id} = function(tagName) {{
+                tagName = tagName.trim();
+                if (!tagName) return;
+
+                // Check if tag already exists
+                var exists = currentTagData_{widget_id}.some(function(t) {{
+                    return t.name.toLowerCase() === tagName.toLowerCase();
+                }});
+                if (exists) {{
+                    document.getElementById('{widget_id}_input').value = '';
+                    return;
+                }}
+
+                // Add via API
+                fetch('/api/v1/core/tags/add-to-snapshot/', {{
+                    method: 'POST',
+                    headers: {{
+                        'Content-Type': 'application/json',
+                        'X-CSRFToken': getCSRFToken()
+                    }},
+                    body: JSON.stringify({{
+                        snapshot_id: snapshotId_{widget_id},
+                        tag_name: tagName
+                    }})
+                }})
+                .then(function(response) {{ return response.json(); }})
+                .then(function(data) {{
+                    if (data.success) {{
+                        currentTagData_{widget_id}.push({{ id: data.tag_id, name: data.tag_name }});
+                        currentTagData_{widget_id}.sort(function(a, b) {{
+                            return a.name.toLowerCase().localeCompare(b.name.toLowerCase());
+                        }});
+                        rebuildInlinePills_{widget_id}();
+                    }}
+                }})
+                .catch(function(err) {{
+                    console.error('Error adding tag:', err);
+                }});
+
+                document.getElementById('{widget_id}_input').value = '';
+            }};
+
+            window.removeInlineTag_{widget_id} = function(tagId) {{
+                fetch('/api/v1/core/tags/remove-from-snapshot/', {{
+                    method: 'POST',
+                    headers: {{
+                        'Content-Type': 'application/json',
+                        'X-CSRFToken': getCSRFToken()
+                    }},
+                    body: JSON.stringify({{
+                        snapshot_id: snapshotId_{widget_id},
+                        tag_id: tagId
+                    }})
+                }})
+                .then(function(response) {{ return response.json(); }})
+                .then(function(data) {{
+                    if (data.success) {{
+                        currentTagData_{widget_id} = currentTagData_{widget_id}.filter(function(t) {{
+                            return t.id !== tagId;
+                        }});
+                        rebuildInlinePills_{widget_id}();
+                    }}
+                }})
+                .catch(function(err) {{
+                    console.error('Error removing tag:', err);
+                }});
+            }};
+
+            window.rebuildInlinePills_{widget_id} = function() {{
+                var container = document.getElementById('{widget_id}_pills');
+                container.innerHTML = '';
+                currentTagData_{widget_id}.forEach(function(td) {{
+                    var pill = document.createElement('span');
+                    pill.className = 'tag-pill';
+                    pill.setAttribute('data-tag', td.name);
+                    pill.setAttribute('data-tag-id', td.id);
+
+                    var link = document.createElement('a');
+                    link.href = '/admin/core/snapshot/?tags__id__exact=' + td.id;
+                    link.className = 'tag-link';
+                    link.textContent = td.name;
+                    pill.appendChild(link);
+
+                    var removeBtn = document.createElement('button');
+                    removeBtn.type = 'button';
+                    removeBtn.className = 'tag-remove-btn';
+                    removeBtn.setAttribute('data-tag-id', td.id);
+                    removeBtn.setAttribute('data-tag-name', td.name);
+                    removeBtn.innerHTML = '&times;';
+                    pill.appendChild(removeBtn);
+
+                    container.appendChild(pill);
+                }});
+            }};
+
+            // Add event delegation for remove buttons
+            document.getElementById('{widget_id}_pills').addEventListener('click', function(event) {{
+                if (event.target.classList.contains('tag-remove-btn')) {{
+                    event.stopPropagation();
+                    event.preventDefault();
+                    var tagId = parseInt(event.target.getAttribute('data-tag-id'), 10);
+                    if (tagId) {{
+                        removeInlineTag_{widget_id}(tagId);
+                    }}
+                }}
+            }});
+
+            window.handleInlineTagKeydown_{widget_id} = function(event) {{
+                event.stopPropagation();
+                var input = event.target;
+                var value = input.value.trim();
+
+                if (event.key === 'Enter' || event.key === ',') {{
+                    event.preventDefault();
+                    if (value) {{
+                        value.split(',').forEach(function(tag) {{
+                            addInlineTag_{widget_id}(tag.trim());
+                        }});
+                    }}
+                }}
+            }};
+
+            window.fetchInlineTagAutocomplete_{widget_id} = function(query) {{
+                if (autocompleteTimeout_{widget_id}) {{
+                    clearTimeout(autocompleteTimeout_{widget_id});
+                }}
+
+                autocompleteTimeout_{widget_id} = setTimeout(function() {{
+                    if (!query || query.length < 1) {{
+                        document.getElementById('{widget_id}_datalist').innerHTML = '';
+                        return;
+                    }}
+
+                    fetch('/api/v1/core/tags/autocomplete/?q=' + encodeURIComponent(query))
+                        .then(function(response) {{ return response.json(); }})
+                        .then(function(data) {{
+                            var datalist = document.getElementById('{widget_id}_datalist');
+                            datalist.innerHTML = '';
+                            (data.tags || []).forEach(function(tag) {{
+                                var option = document.createElement('option');
+                                option.value = tag.name;
+                                datalist.appendChild(option);
+                            }});
+                        }})
+                        .catch(function(err) {{
+                            console.log('Autocomplete error:', err);
+                        }});
+                }}, 150);
+            }};
+
+            function escapeHtml(text) {{
+                var div = document.createElement('div');
+                div.textContent = text;
+                return div.innerHTML;
+            }}
+
+            function getCSRFToken() {{
+                var cookies = document.cookie.split(';');
+                for (var i = 0; i < cookies.length; i++) {{
+                    var cookie = cookies[i].trim();
+                    if (cookie.startsWith('csrftoken=')) {{
+                        return cookie.substring('csrftoken='.length);
+                    }}
+                }}
+                var input = document.querySelector('input[name="csrfmiddlewaretoken"]');
+                return input ? input.value : '';
+            }}
+        }})();
+        </script>
+        '''
+
+        return html
diff --git a/archivebox/templates/admin/base.html b/archivebox/templates/admin/base.html
index bbcb0a3b..bde628a4 100644
--- a/archivebox/templates/admin/base.html
+++ b/archivebox/templates/admin/base.html
@@ -1059,6 +1059,189 @@
                 color: #2563eb;
                 margin-right: 8px;
             }
+
+            /* ============================================
+               Tag Editor Widget Styles
+               ============================================ */
+
+            /* Main container - acts as input field */
+            .tag-editor-container {
+                display: flex;
+                flex-wrap: wrap;
+                align-items: center;
+                gap: 6px;
+                padding: 8px 12px;
+                min-height: 42px;
+                background: #fff;
+                border: 1px solid #d1d5db;
+                border-radius: 8px;
+                cursor: text;
+                transition: border-color 0.15s ease, box-shadow 0.15s ease;
+            }
+
+            .tag-editor-container:focus-within {
+                border-color: #3b82f6;
+                box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
+            }
+
+            /* Pills container */
+            .tag-pills {
+                display: flex;
+                flex-wrap: wrap;
+                gap: 6px;
+                align-items: center;
+            }
+
+            /* Individual tag pill */
+            .tag-pill {
+                display: inline-flex;
+                align-items: center;
+                gap: 4px;
+                padding: 4px 8px 4px 10px;
+                background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
+                color: #fff;
+                font-size: 13px;
+                font-weight: 500;
+                border-radius: 16px;
+                white-space: nowrap;
+                transition: all 0.15s ease;
+                -webkit-font-smoothing: antialiased;
+            }
+
+            .tag-pill:hover {
+                background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
+            }
+
+            .tag-pill a.tag-link {
+                color: #fff;
+                text-decoration: none;
+            }
+
+            .tag-pill a.tag-link:hover {
+                text-decoration: underline;
+            }
+
+            /* Remove button on pills */
+            .tag-remove-btn {
+                display: inline-flex;
+                align-items: center;
+                justify-content: center;
+                width: 16px;
+                height: 16px;
+                padding: 0;
+                margin: 0;
+                background: rgba(255, 255, 255, 0.2);
+                border: none;
+                border-radius: 50%;
+                color: #fff;
+                font-size: 14px;
+                font-weight: 600;
+                line-height: 1;
+                cursor: pointer;
+                opacity: 0.7;
+                transition: all 0.15s ease;
+            }
+
+            .tag-remove-btn:hover {
+                background: rgba(255, 255, 255, 0.4);
+                opacity: 1;
+            }
+
+            /* Inline input for adding tags */
+            .tag-inline-input {
+                flex: 1;
+                min-width: 120px;
+                padding: 4px 0;
+                border: none;
+                outline: none;
+                font-size: 14px;
+                font-family: inherit;
+                background: transparent;
+                color: #1e293b;
+            }
+
+            .tag-inline-input::placeholder {
+                color: #94a3b8;
+            }
+
+            /* Inline editor for list view - more compact */
+            .tag-editor-inline {
+                display: inline-flex;
+                flex-wrap: wrap;
+                align-items: center;
+                gap: 4px;
+                padding: 2px 4px;
+                background: transparent;
+                border-radius: 4px;
+                cursor: text;
+                vertical-align: middle;
+            }
+
+            .tag-pills-inline {
+                display: inline-flex;
+                flex-wrap: wrap;
+                gap: 4px;
+                align-items: center;
+            }
+
+            .tag-editor-inline .tag-pill {
+                padding: 2px 6px 2px 8px;
+                font-size: 11px;
+                border-radius: 12px;
+            }
+
+            .tag-editor-inline .tag-remove-btn {
+                width: 14px;
+                height: 14px;
+                font-size: 12px;
+            }
+
+            .tag-inline-input-sm {
+                width: 24px;
+                min-width: 24px;
+                max-width: 100px;
+                padding: 2px 4px;
+                border: none;
+                outline: none;
+                font-size: 11px;
+                font-family: inherit;
+                background: transparent;
+                color: #64748b;
+                transition: width 0.15s ease;
+            }
+
+            .tag-inline-input-sm:focus {
+                width: 80px;
+                color: #1e293b;
+            }
+
+            .tag-inline-input-sm::placeholder {
+                color: #94a3b8;
+            }
+
+            /* Container in list view title column */
+            .tags-inline-editor {
+                display: inline;
+                margin-left: 8px;
+            }
+
+            /* Existing tag styles (keep for backwards compat) */
+            .tags .tag {
+                display: inline-block;
+                padding: 2px 8px;
+                margin: 1px 2px;
+                background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
+                color: #fff;
+                font-size: 11px;
+                font-weight: 500;
+                border-radius: 12px;
+                text-decoration: none;
+                transition: all 0.15s ease;
+            }
+
+            .tags .tag:hover {
+                background: linear-gradient(135deg, #2563eb 0%, #1d4ed8 100%);
+            }
         </style>
         {% endblock %}