How Inhouse Image works

Inhouse Image converts, compresses, and resizes photos entirely in your browser. Your files are never uploaded, stored, or seen by anyone.

What happens to your file

When you choose a photo, your browser reads it from your disk into memory. The tool decodes it right there, resizes and re-encodes it with the canvas API (and a HEIC decoder for iPhone photos), and hands the result back as a download. When you close the tab, it's gone.

How to check for yourself

• Go offline. Load the convert page, turn off your wifi, then use the tool. It keeps working because it never needed a server.
• Watch the network. Open your browser's developer tools, go to the Network tab, and process a file. You'll see no request carrying your photo.
• Read the security policy. Every page sends a Content-Security-Policy that only allows connections back to this site, plus cookieless visit counting. Your browser enforces it even if the code tried to send your file elsewhere.

Analytics

We count page visits with Cloudflare Web Analytics, which uses no cookies and doesn't track you across sites. It never sees your files.

Open source

Inhouse Image is free software under the MIT license. The HEIC decoder islibheif, used as a WebAssembly module under LGPL-3.0. The full source code is atgithub.com/yashsharma04/inhouse-image.

It is built on these open-source projects:

• heic-decode (ISC)
• libheif-js (LGPL-3.0)
• libheif (LGPL-3.0)
• fflate (MIT)

Made by Quiet Labs.