About ConvertOwl
High-quality, free file tools that keep your files where they belong — on your device.
ConvertOwl is a collection of free, high-quality tools for converting and manipulating files: images, PDFs, audio, video, archives, and more. We built it because most conversion sites are slow, cluttered, and require you to upload your personal files to a stranger’s server.
We do things differently. Every conversion runs directly inside your browser using WebAssembly — the same technology that powers professional tools like Google’s Squoosh and Adobe’s web apps. Your files never leave your device. There is no upload step, no waiting in a queue, and no risk of your photos, documents, or audio ending up on someone else’s storage.
ConvertOwl is ad-supported and always free. We don’t charge for conversions, there are no file-size tricks, and you don’t need to create an account. Display ads keep the lights on and the tools improving.
We care deeply about quality. A converted image should look right. A cropped PDF should be crisp. A re-encoded audio file should sound clean. We test every tool with real files and fix bugs quickly when things go wrong.
Private by design
No server ever sees your files. All processing is in your browser, in your memory, on your machine.
No waiting
Conversions start the moment you drop a file. No upload, no queue, no progress bar lying to you.
Free forever
Ad-supported so we can offer every tool at no cost. No premium tier, no watermarks.