Media Tools
Free, browser-based media conversion and compression tools. Compress videos, convert audio extracts, optimize images, and extract color palettes locally.
Popular Media Guides & Format Converters
Quick solutions for converting, compressing, and extracting multimedia files with zero quality loss.
How NexaTools processes your media files locally
The two core browser technologies that power this suite are WebAssembly (Wasm) and the HTML5 Canvas API. FFmpeg the same open-source multimedia framework used in most professional video workflows has been compiled to a Wasm binary that runs natively in Chrome, Firefox, Safari, and Edge without any browser plugin or extension. Image operations use the browser's built-in 2D canvas rendering context, which exposes per-pixel read/write access through getImageData and putImageData. Neither pathway sends data over a network connection.
Zero-upload architecture
File data is read into memory via the FileReader API and processed entirely inside the browser tab. No network requests are made after the page loads.
FFmpeg via WebAssembly
The same FFmpeg binary used in production video pipelines runs inside your browser tab via Wasm, giving access to every codec and container format FFmpeg supports.
No file retention
Closing the tab or navigating away immediately frees all allocated memory. NexaTools stores nothing not the file, not its metadata, not its name.