Morphio is a privacy-first suite of online tools for working with files – starting with a powerful client-side file converter. Everything runs directly in your browser using modern web technologies like WebAssembly and browser APIs. Your files never leave your device, which means no uploads, no server storage, and no tracking.

Morphio is built by a small team focused on open web technologies and user privacy. We believe your files should stay yours – always.

Our mission

Most online file converters work the same way: you upload your file to a server, a stranger's machine does the conversion, and you trust that the file is deleted afterwards. For sensitive documents, personal photos, voice memos, or work-in-progress media, that's a bad trade. Morphio exists to prove that the trade is unnecessary — modern browsers can do the conversion themselves.

How it works under the hood

Morphio is a single-page web app that loads a set of WebAssembly modules on demand. Images go through the browser's native decoders and the Canvas API. Audio and video go through ffmpeg.wasm — a port of the venerable FFmpeg project compiled to WebAssembly so it can run inside the tab's sandbox. When you drop a file, the bytes are read into memory, processed locally, and a new Blob is handed back to you as a download. Nothing is ever sent to a server.

100% local

Files never leave your device.

No queues

As fast as your machine can run.

Works offline

Once loaded, no network needed.

Who's behind it

Morphio is built and maintained by a small independent team that cares about web standards and user privacy. We're not a venture-funded company, we don't sell your data, and we don't have a sales team. If you want to reach us, the contact form is the best way.

How we keep the lights on

Running a website costs money even when conversions are free. We cover hosting through two honest channels: Morphio Pro subscriptions and affiliate links (currently NordVPN, Higgsfield and Lovable — clearly marked in the footer). We run no advertising and no third-party tracking at all, so nothing on this page watches what you do or what you convert.

Open about the tech

Built with TanStack Start, React, Tailwind, ffmpeg.wasm and the Canvas API. Hosted on Cloudflare's edge network. Source files for each conversion stay in the page's memory and are released when you close the tab.

Thank you

Thanks for trusting Morphio with your files. If something doesn't work, please tell us — we read every message.

About Morphio