Free Online Video & Audio Tools
Free video and audio tools that run in your browser: convert, compress, trim, mute, extract audio and make GIFs. No upload, no signup, no watermark.
Extract
Convert & Process
Free video and audio tools that run in your browser
Mastik is a set of free tools for the everyday jobs you do with your own video and audio files — convert a clip to another format, shrink it to a smaller size, turn a moment into a GIF, pull the audio out, or trim and mute what you don't need. Every tool works the same way: open it, drop in a file and download the result.
Because the work runs on your own device using WebAssembly, your files are never uploaded to a server. There is no account to create, no software to install, and nothing added to the output — no watermark, no branding. The first time you open a tool your browser fetches a small one-time engine and caches it, so after that the tools keep working even offline.
Everything here is free and unlimited. Pick a tool below to get started, or read the guides on our blog for step-by-step walkthroughs.
Frequently asked questions
Answers to the most common questions about using these free video & audio tools.
Yes. Every tool on Mastik is free and unlimited, with no account and no signup. The site is funded by advertising, so there is no paywall and no premium tier.