Free batch file converter that runs entirely in your browser. No uploads, no accounts, no tracking. Your files never leave your device.
No servers. No uploads. No compromise.
Your files never leave your device. All conversion happens locally in your browser.
Image conversions use native browser APIs for near-instant results. No waiting.
Audio and video conversions powered by FFmpeg.wasm — the same engine used by professionals.
No accounts. No uploads. No tracking. Files are processed and discarded immediately.
37 conversions ready today, more on the way.
Lossless, lossy, and vector conversions
H.264, VP9, GIF encoding
Extract, encode, decode
Extract, convert, transform
2convert runs a four-step pipeline that never touches a remote server. When you drop a file onto the page, the app detects its format, spawns a Web Worker, and routes the conversion to the right engine — createImageBitmap/OffscreenCanvas for images, FFmpeg.wasm for audio and video, and pdf.js / mammoth / marked / jsPDF for documents. The worker writes the result straight to a Blob URL that your browser downloads on completion.
A file converter is a tool that translates a file from one format into another — for example, a PNG image into a JPG, a WAV audio clip into an MP3, or a DOCX document into HTML. Most online file converters upload your file to a remote server, run the conversion there, and email or download the result. That model exposes sensitive documents to the server operator, their logs, and any downstream storage.
2convert takes the opposite approach: the conversion engines run directly in your browser using WebAssembly and Web Workers, so your file never leaves your device. This is sometimes called a client-side, in-browser, or privacy-first file converter.
2convert supports 37 conversions across four categories. Images include PNG, JPG, WebP, GIF, SVG, BMP, and ICO. Audio covers MP3, WAV, OGG, FLAC, M4A, and AAC. Video supports MP4, WebM, MOV, and animated GIF output. Documents cover PDF, DOCX, TXT, Markdown, HTML, RTF, CSV, TSV, and JSON. The full conversion matrix is visible in the dropdown the moment you drop a file — you only see output formats that are valid for your input.
Yes. Because 2convert runs entirely client-side, your files are processed in the same sandbox as any other web page — isolated from other tabs, other origins, and your local filesystem. Nothing is uploaded, nothing is cached on a server, and nothing is logged. If you close the tab, every trace of your conversion is gone. For regulated industries (legal, medical, financial) where document confidentiality is non-negotiable, a client-side converter is often the only compliant option.
2convert is part of a growing family of free, privacy-first web tools: