About Imgnest

Imgnest is a collection of free image tools — compress, resize, convert, crop, watermark — with one defining difference: everything runs inside your browser. Your images are never uploaded to a server, because there is no server doing the work.

Who is behind it

Imgnest is built and maintained by Sergio de la Rosa, a software developer based in Spain. It is an independent project, not a company — one person writing the code, the guides and the Spanish translations.

You can reach me directly at [email protected]. Bug reports and requests for missing tools genuinely shape what gets built next.

Why it exists

Most online image tools work the same way: you upload a file, a server processes it, you download the result. That is fine for a holiday photo. It is a strange thing to do with a passport scan, a signature, or a screenshot of your bank account — which is exactly what people use these tools for, because upload forms demand images at very specific sizes.

Browsers can now do that work themselves. Canvas handles resizing and re-encoding; WebAssembly runs the same compiled codecs a desktop application would use. Once you build it that way, the file never has to leave the device. Imgnest exists to show that this is not a compromise: it is faster, more private, and cheaper to run.

What that makes possible

• Private by construction. Files stay on your device. Load a tool, disconnect from the internet, and it keeps working — seehow to verify that yourself.
• No limits. Processing costs us nothing, so there are no queues, no daily caps, no maximum batch size and no watermarks on your output.
• No sign-up. There is nothing to register for. Open a tool and use it.
• Fast. No upload and download round trip — the slowest part of most online tools simply does not exist here.

How it is funded

Imgnest is free and intended to be supported by unobtrusive advertising. There is no premium tier, no account and nothing to buy. Advertising never has access to the files you process, because those files never leave your browser — the two systems cannot touch. Ourprivacy policy and cookie policy spell out exactly what is and is not collected.

How it is built

The site is a static build (Astro) hosted on Cloudflare Pages, with each tool loaded on demand so pages stay light. Image work uses the browser's own canvas and decoding APIs plus WebAssembly builds of established codecs — libheif for HEIC, and Squoosh's encoders for AVIF. Nothing is processed remotely and there is no database, because there is no user data to store.