About

convert.dcln.me is a small collection of file conversion tools. The defining property: every tool runs entirely in your browser. Your files are never uploaded to any server.

Most online converters work by uploading your file to a server, processing it there, and offering you the result. That works, but it means your file briefly lives on someone else’s machine. The privacy promises are typically “we delete it after an hour” — not “we never had it.”

Modern browsers can do a lot of work locally. WebAssembly and well-built JavaScript libraries can merge PDFs, convert image formats, extract data, and more — all on your device, with the kind of performance that used to require a server. So that’s what these tools do.

What this site doesn’t do

• ×No uploads. Files stay on your device.
• ×No accounts. Nothing to sign up for.
• ×No ads. Not now, not later.
• ×No cookies. No banner to dismiss.
• ×No tracking. Analytics is privacy-respecting and counts pageviews only.

How to verify the no-upload claim

Open your browser’s developer tools (usually F12), switch to the Network tab, and clear it. Then pick your files and run the conversion. You’ll see no requests fire when the work actually happens. You can also disconnect your wifi after the page has loaded — the tools keep working.

Open source

The full source is on GitHub at github.com/beelzer/converter under the MIT license. Fork it, host your own copy, or audit the code yourself.

Tech stack

Astro · Preact · Tailwind · pdf-lib · Cloudflare Workers · R2