About FileHaven
FileHaven is a collection of free, browser-based utilities for common file operations. Every tool runs entirely on your device using JavaScript — there is no backend server, no upload endpoint, and no way for us to see your files even if we wanted to.
How it works
Modern browsers expose powerful APIs — the File API, Canvas API, and WebAssembly — that allow complex processing to happen locally. When you select a file, your browser reads it into memory and processes it there. The result is offered to you as a download, entirely without touching a server.
The simplest way to verify this: once the page has loaded, disconnect your device from the internet and try processing a file. It will still work — because nothing about the process requires a network connection.
Why this matters
Most file-conversion websites upload your files to a remote server, process them there, and then delete them (or so they say). That means your photos, documents, and data pass through infrastructure you don't control. FileHaven eliminates that step entirely. Your files are yours.
Open source
The source code is fully open — you can read every line that runs in your browser, confirm there are no hidden network calls, and self-host the site if you prefer.
For a plain-language explanation of our data practices, see the Privacy page .