User Guide & Instructions

100% Privacy & Security

All your files are processed exclusively inside your browser using WebAssembly (FFmpeg WASM) and HTML5 Canvas. Zero files are sent to external servers!

Quick Start in 3 Steps

1. Add Files: Drag and drop media or documents into the drop zone or click "Choose Files".
2. Select Formats: Set target formats individually per file or use the control bar for batch setup.
3. Convert & Download: Click "Convert", watch progress, and download converted files individually or as a single ZIP archive.

Smart Categories & Isolated Batch Management

• Shows the full queue of all added files across all categories (images, audio, video, documents).
• Checked files are retained when switching between Audio, Video, Image, or Document tabs.
• When switching to a specific category (e.g. Video), bulk action buttons apply ONLY to that category's files.

Smart Batch Selection & Strict Compatibility Matrix

When selecting a format from the batch dropdown for a group of selected files, the system automatically filters by media type: graphics formats (.webp, .png, .jpg) apply ONLY to Images, audio formats (.mp3, .wav) apply ONLY to Audio, video formats (.mp4, .webm) apply ONLY to Video, and document formats (.pdf, .docx, .txt) apply ONLY to Documents. All other files retain their current target formats unchanged.

Batch Format Overwrite Warning

Applying a format from the batch dropdown to a selected group or queue updates the target format for all matching files in that group.

Download All in One ZIP Archive

After conversion completes, no need to click files one by one. Click "Download All ZIP" to bundle all processed files into a single convenient archive right inside browser memory!