The 100% Offline, Single-File File Manager & Metadata Viewer for AI Images.
History Guru has evolved into a precision instrument for AI creators. It is no longer just a viewer—it is a full-fledged Local File Manager and Metadata Editor for your ComfyUI and A1111 output folders.
Organize, sort, move, rename, and "un-bake" your AI generations without ever leaving the metadata view. It runs entirely in your browser using the modern File System Access API (Chrome/Edge) or high-performance HTML5 inputs (Firefox).
- True File Operations: Create folders, rename files on disk, and move files between directories directly from the UI.
- Multi-Select Engine: Full Windows-style
Shift+Click(range) andCtrl+Click(toggle) selection. - Bulk Drag & Drop: Select a group of images and drag them into the sidebar to organize your library in seconds.
- Direct Overwrite: The "Fix & Save" engine writes updated metadata directly back to the original file—no more
fixed_copies cluttering your folders.
- LoRA "Un-Baking": Intelligent parser auto-detects baked resources in ComfyUI/A1111 metadata and imports them into the editable LoRA manager.
- Universal LoRA Manager: Add, remove, update strength, and reorder LoRA tags via a dedicated visual editor.
- Lossless Injection: Writes corrected metadata directly back to the PNG binary using CRC32 checksum injection—no re-encoding or quality loss.
- Pro-Grade EXIF: Deep support for UNICODE (UTF-16), ASCII, and UTF-8 encoded
UserCommentfields.
- Massive Scaling: Dynamic thumbnail engine provides 3x larger previews via a smooth scaling slider.
- Hybrid View: Instant toggle between a Categorized List View (with clickable sort headers) and a Visual Grid View.
- Cinema Mode: A split-screen "Detail View" for full-height image inspection alongside live metadata editing.
- Memory Safety: Systematic
URL Lifecycle Managementand debounced URL revocation ensure smooth performance even with 1000+ images.
- Universal Parity: Reworked Light Mode with theme-aware CSS variables. Overlays, labels, and selection highlights are high-contrast and perfectly legible in bright environments.
Best for: Managing files, bulk organizing, and direct disk editing.
- Open
Guru Manager ChromeEdge Edition.htmlin your browser. - Grant Permission: Click "Open Folder" and select your directory. When the browser asks, click "Edit" or "Allow" to enable file management features.
- Organize: Use the sidebar to create folders. Use
Shift+Clickto select groups and drag them into new locations. - Edit: Click any image to open the Inspector. Edit prompts or LoRAs and hit "Fix & Save" to overwrite the file on disk.
Best for: Fast metadata inspection and image conversion.
- Open
Guru Manager Firefox Edition.htmlin Firefox. - Load: Click "Load Folder" and select your directory.
- Export: Edit metadata as needed. Hit "Fix & Save".
- Tip: Enable "Always ask where to save files" in Firefox Settings to use the download button as a "Save As" feature.
- Parity: Enjoy the same LoRA manager and metadata tools as the Chrome edition in a lightweight, read-only environment.
Arrow Keys- Navigate images in detail viewEsc- Blur active input / Close overlays / Exit detail viewT- Toggle theme (Dark/Light)F- Focus search boxR- Refresh folder?or/- Show help & shortcutsS- Toggle Statistics view
- File System Access API: Direct disk I/O for file moves and renames.
- IndexedDB Caching: Instant subsequent loads for thousands of images.
- Virtual Scrolling: Near-zero lag when browsing massive collections.
- CRC32 Binary Injection: Patches PNG chunks without re-encoding pixel data.
MIT License - Free to use, modify, and distribute for the AI art community.
- US Date Format: Switched to
MM/DD/YYYYlocalization. - List Alignment: Fixed "Header Shift" bug when thumbnails are off.
- First-Seen Engine: Cached initial scan dates to separate "Created" from "Modified".
- Direct Overwrite: "Fix & Save" now overwrites original files in Chrome/Edge.
- Multi-Selection: Added
Shift+ClickandCtrl+Clicksupport. - Bulk Drag & Drop: Move selected files in groups.
- On-Disk Renaming: Added rename feature to the metadata panel.
- LoRA Un-baking: Auto-import baked resources into editable tags.
- Dual-Engine Export: High-fidelity Save Picker for Chromium; Binary-masking for Firefox.
- Ergonomic Layout: LoRA Manager moved below Negative Prompt.
- Thumbnail Scaling: Reworked math for 3x larger previews.
- Grid/List Toggle: Dedicated button for instant layout switching.
- Thumbnail Toggle: Status indicator (Green/Red) for visibility.
- Light Mode Audit: High-contrast variables for Daylight Mode.
- Advanced Memory Management: URL Lifecycle Management to prevent leaks.
- EXIF Engine: Enhanced support for UNICODE and Civitai standards.
- Duplicate Finder: Ultra-fast hashing (first 50KB).
Made with ❤️ for the AI art community