Universal converter
Pick a category, then a from/to format. Everything runs in your browser - your files never leave your device.
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About this tool
One tool for every common conversion task - images, documents, audio and video - without choosing the right specific page first. Drop any file, pick the target format from the suggestions, and the converter routes it to the appropriate engine: pdf-lib for PDF work, browser canvas APIs for images, FFmpeg (WebAssembly) for media, and libheif for HEIC. Everything runs in your browser tab.
It is meant for the moment when you do not care how the conversion happens, you just want the file in a different format. If you need fine control - quality sliders, page ranges, watermark options - the per-format tools in the menu give you more knobs.
Because the work is local, there is no upload progress bar, no queue, no "please wait while the server processes your file" page. Your file is read from disk into the page, transformed in memory, and offered back as a download. Nothing in between.
Features
- One drop zone for images, PDFs, audio and video
- Automatic suggestions for the most useful target formats
- JPG, PNG, WebP, AVIF, HEIC, GIF, BMP and TIFF for images
- MP3, WAV, M4A, FLAC, OGG, AAC and Opus for audio
- MP4, WebM, MOV and GIF for video
- Batch conversion - drop several files and get them back as a ZIP
- Works offline after the first page load
How to use it
- Drop or pick the file you want to convert.
- Pick the target format from the suggested list.
- Adjust quality if the format has a slider (JPG, WebP, MP3, MP4).
- Click Convert and download the result.
Everything happens inside your browser using JavaScript and WebAssembly. Your files are never uploaded to a server, never stored, and never seen by us.
Frequently asked questions
The browser has to load the WebAssembly engine for the format you picked - FFmpeg for video, libheif for HEIC, and so on. Once it's loaded the engine stays cached, so the next conversion of the same type starts immediately.
Most modern devices can comfortably convert PDFs into the hundreds of pages, images up to gigapixel size, and videos up to a few hundred MB. The hard ceiling is your browser tab's memory, not a server quota.
It covers the common ones. Exotic professional formats - RAW camera files, ProRes video, lossless WAV at unusual bit depths - need the dedicated tools in the menu, which expose more options.
No. The page loads once; after that, conversions happen entirely on your device. You can verify it in the browser's network panel - your file's bytes never appear in an outgoing request.