VSCode Omni Viewer
A comprehensive audio, image, PSD, video, CSV, Excel, Word, PowerPoint, PDF, Parquet, JSONL, and HWP viewer extension for VSCode and Cursor.
🎵 Audio Viewer Features
Advanced Audio Player with WaveSurfer.js
- Waveform Visualization: Real-time audio waveform display
- Spectrogram: Frequency analysis with spectrogram view
- Region Selection: Set start/end times for specific regions
- Loop Playback: Repeat playback of selected regions
- Volume Control: Real-time volume adjustment
- Playback Speed: Multiple playback speed options
- Audio Information: Duration, sample rate, channels, bit depth, file size, format display
- MP3, WAV, OGG, FLAC, AAC, M4A
🖼️ Image Viewer Features
Advanced Image Viewer
- Zoom Controls: 10% ~ 500% zoom in/out
- Rotation: 90-degree left/right rotation
- Flip: Horizontal/vertical flip
- Fit to Screen: Automatic screen size fitting
- Image Filters: Brightness, contrast, saturation, grayscale adjustments
- Filter Presets: Normal, Bright, Dark, Vintage, B&W presets
- Save Functionality: Save filtered images to workspace
- Keyboard Shortcuts: Quick operation shortcuts
- Image Information: Resolution, format, and file size information display
- JPG, JPEG, PNG, GIF, BMP, WebP, SVG
🖼️ PSD Viewer Features
Adobe Photoshop (PSD) Viewer
- Layer Panel: Tree view of layers and groups (folders) with indent by depth
- Per-Layer Visibility: Eye button to show/hide each layer independently
- View Button: Open a single layer in a modal for closer inspection
- Composite vs Layer-by-Layer: When all layers are visible, the full composite is shown; when any layer is hidden, the canvas is redrawn from visible layers only (leaf layers; group merged canvases are skipped to keep visibility correct)
- Transparency: Checkerboard background for transparent areas
- File Information: File name, file size, and document dimensions (width × height px)
- Powered by: ag-psd for PSD parsing and canvas output
- PSD (Adobe Photoshop Document)
🎬 Video Viewer Features
Advanced Video Player
- Playback Controls: Play/pause/stop
- Loop Regions: Set start/end times and loop playback
- Playback Speed: 0.25x ~ 4x playback speed control
- Skip Controls: 10-second forward/backward skip
- Volume Control: Real-time volume adjustment
- Keyboard Shortcuts: Spacebar, arrow keys, etc.
- Video Information: Resolution, duration, and file size display
- MP4, AVI, MOV, WMV, FLV, WebM, MKV
📊 CSV Viewer Features
Advanced CSV Viewer
- Table Display: Clean, sortable table view of CSV data
- Search & Filter: Real-time search across all columns
- Column Sorting: Click headers to sort by any column (numeric/text aware)
- Pagination: Handle large datasets with page navigation
- Copy to Clipboard: Copy filtered data to clipboard (tab-separated format)
- Statistics View: Display detailed file and data statistics
- Keyboard Shortcuts: Ctrl+F for search, Ctrl+C for copy
- File Information: Row count, column count, and file size display
- Responsive Design: Works on different screen sizes
- Delimiter Detection: Automatically detects comma, semicolon, tab, and pipe-delimited text formats
- CSV (Comma-Separated Values)
- TSV (Tab-Separated Values)
📊 Excel Viewer Features
Advanced Excel Viewer
- Multi-Sheet Support: Switch between sheets via dropdown
- Table Display: Clean table view of sheet data
- Search & Filter: Real-time search across all columns
- Pagination: Handle large datasets with page navigation
- Copy to Clipboard: Copy filtered data (tab-separated)
- Copy as JSON: Export current sheet data as JSON
- Raw View: Toggle between table and raw JSON view
- File Information: Sheet name, row count, column count, file size
- Keyboard Shortcuts: Ctrl+F search, Ctrl+C copy
- XLSX (Excel Workbook)
- XLS (Excel 97-2003)
📄 Word Viewer Features
Microsoft Word (DOCX) Viewer
- Document View: Renders
.docx with docx-preview for improved layout fidelity
- DOC Support: Opens
.doc via standalone legacy HTML fallback, with LibreOffice conversion fallback only when needed
- Native Legacy Rendering: Preserves more
.doc paragraph styling, table structure, and readable legacy text decoding
- Embedded Workbook Preview: Shows extracted worksheet tables and simple SVG chart previews when legacy
.doc files contain embedded workbook data
- Zoom Controls: Zoom in/out and reset (Ctrl+/-, Ctrl+0)
- Print: Print document (Ctrl+P)
- File Information: File name and file size
- Powered by: docx-preview for DOCX rendering
- DOCX (Microsoft Word Document)
- DOC (Microsoft Word 97-2003)
📽️ PowerPoint Viewer Features
Microsoft PowerPoint (PPTX/PPT) Viewer
- Slide View: Reads
.pptx and legacy .ppt files and renders slide content in order
- Title + Bullet Extraction: Displays slide title and bullet text content
- Legacy PPT Layout Recovery: Preserves more title/body/subtitle placement, slide sizing, and discovered shape/image positioning for
.ppt
- Packaged PDF.js Rendering: Uses bundled
pdf.js assets for environments where external CDN access is blocked
- Slide Jump: Jump to any slide from a dropdown
- Zoom Controls: Zoom in/out and reset (Ctrl+/-, Ctrl+0)
- File Information: File name, file size, and slide count
- Powered by: JSZip for PPTX archive parsing
- PPT (Microsoft PowerPoint 97-2003)
- PPTX (Microsoft PowerPoint Presentation)
📑 PDF Editor Features
PDF View & Edit
- Page View: Page-by-page rendering with thumbnail sidebar
- Zoom Controls: Zoom in/out and reset
- Annotations: Add text/signature, select, move, and delete annotations
- Password-Protected PDFs: Open encrypted PDFs with an in-viewer password prompt
- Text Size Control: Choose annotation font size when inserting text
- Page Editing: Reorder pages (drag & drop) and delete pages
- Merge PDF: Merge another PDF into the current document
- Save Flows: Save and Save As with state synchronization after save
🇰🇷 HWP Viewer Features
Hangul Word Processor (HWP) Viewer
- Document View: Opens
.hwp files directly inside Omni Viewer
- Integrated Routing: Works with the same signature-based viewer detection flow used across the extension
📄 JSONL Viewer Features
Interactive JSONL Editor
- Line-by-Line Editing: Direct inline editing of JSON lines with syntax validation
- Hover Popup: JSON popup display on line hover with formatted syntax highlighting
- Click-to-Edit Popup: Click popup content to edit JSON directly in formatted view
- Real-time Validation: Instant JSON validation with visual feedback (valid/invalid indicators)
- Data Synchronization: Seamless sync between popup edits and original lines
- Syntax Highlighting: Color-coded JSON syntax for better readability
- Error Handling: Clear error messages for invalid JSON format
- JSONL (JSON Lines) - Each line contains a valid JSON object
📊 Parquet Viewer Features
Advanced Parquet Viewer
- Table Display: Clean, table view of Parquet data
- Search & Filter: Real-time search across all columns
- Column Sorting: Click headers to sort by any column (numeric/text aware)
- Pagination: Handle large datasets with page navigation
- Copy to Clipboard: Copy filtered data to clipboard (tab-separated format)
- Keyboard Shortcuts: Ctrl+F for search, Ctrl+C for copy
- File Information: Row count, column count, and file size display
- Responsive Design: Works on different screen sizes
🧭 Smart File Detection
- Signature-Based Routing: Detects common file signatures before opening and can reroute mislabeled files to the matching Omni Viewer
- Broader Format Sniffing: Recognizes common PDF, image, audio, video, Parquet, Office, CSV-style, and JSONL content beyond filename extensions
🚀 Installation and Usage
Install from Marketplace
Marketplaces:
If you are using jetbrains ide, check out this repository
Omni Viewer is also available on web and mobile platforms:
Development Setup
Install Dependencies
npm install
Compile TypeScript
npm run compile
Package Extension
npm run vscode:prepublish
Privacy & Data Use (Planned Share Feature)
Omni Viewer does not currently enable this share upload flow in the released extension.
The following policy describes the planned behavior for a future share feature release.
Open VSX listing privacy details: open-vsx-listing-privacy.md
- What data will be uploaded
- The file selected by the user for sharing (single file)
- File metadata such as filename, content type, file size, file type, and optional viewer metadata (for example selected region/range)
- Request source platform (for example
vscode)
- Purpose
- Create a temporary share link and allow limited-time download/view access
- Planned storage location
- Temporary server-side processing
- Cloud storage for shared files
- Database storage for share metadata
- Planned retention / expiration
- Default share link lifetime: 5 minutes
- After expiration, share access will be denied (
410)
- Expired objects/metadata may be removed by backend lifecycle jobs
- Planned access model
- Upload endpoint will require authenticated client request (API key-based)
- Download endpoint will be link-based with non-guessable share IDs
- Optional maximum access-count policy may be applied per share
Privacy Policy: https://omni-viewer-web.web.app/privacy
📝 License
MIT License
📞 Support
If you encounter any issues or have feature requests, please contact us through GitHub Issues.
Known Issues
- Large file handling optimization needed
File Size Limitations
Parquet File Specific Limitations
- File Size Restrictions:
- Files ≥ 150MB: Cannot be opened. Clear error message will be displayed.
- Files 50MB - 150MB: Only the first 10,000 rows are displayed with a warning message showing total row count.
- Files < 50MB: All rows are displayed without any limitations.
- Row Limit: For files between 50MB and 150MB, only the first 10,000 rows are loaded for display to prevent memory issues
- Memory Considerations:
- Parquet files are converted to JSON format for display, which can significantly increase memory usage
- Large files may take time to load initially
- For best performance, keep files under 50MB for full data access
General Notes
- Large files may take time to load initially
- Memory usage scales with file size
- For best performance, keep files under recommended sizes
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