VSCode Omni Viewer

Privacy fork: the file-sharing/upload feature has been removed. This build makes no network requests — all viewing and rendering happens locally. See Privacy & Data Use.

A comprehensive audio, image, PSD, video, CSV, DBC, ARXML, A2L, ASC, BLF, MF4, Excel, Word, PowerPoint, PDF, Parquet, JSONL, Mermaid, PlantUML, and HWP viewer extension for VSCode and Cursor.

• 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, PCM (raw s16le mono 16kHz), AIFF/AIF/AIFC, AMR/AWB, OGG, FLAC, AC3, AAC, M4A

Note: playback still depends on the VS Code webview browser engine supporting the underlying codec.

• 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

• 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)

• 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, MPEG-TS (TS/MTS/M2TS), AVI, MOV, WMV, FLV, WebM, MKV

Note: .ts files share an extension with TypeScript source files, so automatic viewer association may require using Open With instead of a default file binding.

• 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)

• Message Overview: Browse CAN messages with ID, hexadecimal ID, DLC, transmitter, and signal count
• Signal Table: Inspect start bit, bit length, byte order, signedness, scale, offset, range, unit, and receivers
• Search & Filter: Search across messages/signals/comments and filter by CAN node
• Comments & Value Tables: Shows CM_ comments and VAL_ enumerations when present
• Raw Source View: Keep the original DBC text available beside the structured view

• DBC (CAN database)

• ARXML Structure View: Summarizes AUTOSAR packages, named CAN-related elements, and references
• A2L Block View: Lists ASAP2 blocks and counts key sections such as MEASUREMENT, CHARACTERISTIC, and IF_DATA
• ASC Log Preview: Parses Vector ASCII CAN/CAN FD events into a searchable table
• BLF Header Preview: Detects Vector BLF LOGG files and shows binary header/hex preview
• MF4 Header Preview: Detects ASAM MDF 4 files and summarizes known MDF block markers
• Search & Raw Preview: Search across extracted tables and inspect the original text preview for text-based formats

• ARXML (AUTOSAR XML)
• A2L (ASAM MCD-2 MC / ASAP2)
• ASC (Vector ASCII CAN log)
• BLF (Vector Binary Logging Format header preview)
• MF4 (ASAM MDF 4 header and block marker preview)

• 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)

• 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)

• 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)

• 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

• PDF

• Document View: Opens .hwp and .hwpx files directly inside Omni Viewer
• Integrated Routing: Works with the same signature-based viewer detection flow used across the extension
• Powered by: rhwp (@rhwp/core) for upstream parsing and rendering
• Upstream-Friendly Integration: Runtime assets are synced from node_modules/@rhwp/core via npm run sync:rhwp, so future rhwp updates can be adopted without forking its renderer

• HWP, HWPX

• Serverless Rendering: Renders PlantUML diagrams in the VS Code webview without a PlantUML server
• Diagram / Split / Source Views: Switch between rendered preview, side-by-side source, and read-only source
• Zoom Controls: Zoom in/out and reset
• Light / Dark Render Modes: Toggle PlantUML output mode
• Copy Source: Copy the original diagram text to clipboard
• File Information: File name, file size, and line count
• Powered by: puml-canvas-js for native JavaScript SVG rendering

• PUML, PlantUML, IUML

• 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

• 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

• Parquet

• 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

Marketplaces:

• VSCode Marketplace - Official VSCode Marketplace
• Open VSX Registry - Open Source VSX Registry

If you are using jetbrains ide, check out this repository

Omni Viewer is also available on web and mobile platforms:

• Web: Web App
• Android: Google Play
• iOS: App Store

1. Install Dependencies

   npm install

2. Compile TypeScript

   npm run compile

3. Package Extension

   npm run vscode:prepublish

This fork sends no data off your machine. The file-sharing/upload feature from upstream has been removed entirely: there are no share, upload, or download commands, and the extension host makes no network requests. Files are read from and written to the local workspace only; all rendering happens locally inside sandboxed webviews.

MIT License

If you encounter any issues or have feature requests, please contact us through GitHub Issues.

• Large file handling optimization needed

• Audio/Video/Image Files:

  • Maximum file size limit: 50MB per file
  • Recommended file size: < 50MB for optimal performance
  • Audio files are loaded as Base64 for WebView compatibility

• Text-based Files (CSV, JSONL, Parquet):

  • Maximum file size limit: 500MB per file
  • Recommended file size: < 200MB for optimal performance
  • Large files may take time to load initially
  • Memory usage scales with file size

• 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

• Large files may take time to load initially
• Memory usage scales with file size
• For best performance, keep files under recommended sizes