About File Format Converter

File Format Converter is a free collection of more than 200 online tools for converting and working with files — PDFs, images, documents, spreadsheets, data, audio and video. It was built around a single principle that shapes every tool on the site: your files are yours, and they should never have to leave your device to be converted.

How it works — and why it's different

Most online converters upload your file to a server, process it there, and send it back. That means your private documents, photos and recordings travel across the internet and sit on someone else's computer, even if only briefly. We took a different approach. Every tool here runs entirely inside your web browser using modern technologies like WebAssembly, the Canvas API and the same open-source libraries that power professional software.

When you convert a file with File Format Converter, the file is read, processed and saved on your own device. Nothing is uploaded, nothing is stored on a server, and nothing is logged. This has three real benefits: conversions are faster because there's no upload or download wait, there are no file-size limits beyond your device's own memory, and your data stays completely private — we couldn't see your files even if we wanted to.

What you can do here

The toolkit covers the everyday format problems people run into: turning a PNG into a JPG, converting a Word document to PDF, extracting text from a PDF, reshaping CSV into JSON for an API, converting an iPhone HEIC photo so it opens anywhere, or changing a MOV video to MP4. We also build developer utilities like a JSON formatter, encoders, and archive tools. New tools and in-depth guides are added regularly based on what people ask for.

Our commitment to quality

We test every tool against real files, write a clear explanation of what each format is and when to use it, and keep the interface simple — no sign-ups, no watermarks, and no nagging. We believe a free tool should still be a good tool.

How the site stays free

File Format Converter is supported by unobtrusive advertising, which lets us keep every tool free for everyone with no paywalls or account requirements. We aim to keep ads tasteful and the content useful. You can read exactly how your data is handled in our Privacy Policy.

Get in touch

Have a question, found a bug, or want a format we don't support yet? We genuinely read every message — visit our contact page and let us know.