Welcome to ZeroConvert! What file formats or batch tools should we build next?

Hey everyone! 👋

Thanks for checking out ZeroConvert (https://getzeroconvert.com).

I built ZeroConvert so you can convert PDFs, images (HEIC, WebP, AVIF, PNG, JPG, SVG), audio/video (MP4, MP3, WAV, WebM, GIF), and spreadsheets (XLSX, CSV, JSON, XML) 100% locally inside your browser's RAM without ever uploading private files to a cloud server.

Currently supported under the hood:

• Audio & Video: WebAssembly (FFmpeg.wasm) + native browser C++ OfflineAudioContext for fast local audio decoding and MP4 stream-copy muxing.

• Images: Client-side HEIC/HEIF decoding (libheif) and HTML5 Canvas rendering.

• Documents & Data: Local PDF merging/conversion (PDF-Lib) and spreadsheet transformation (SheetJS).

I'm actively adding new formats and features based on community feedback. If you run into any edge-case files or have a format request (like EPUB, DOCX, or custom compression sliders), drop a reply below!