About Glarso

Glarso is a collection of free online tools — file converters, image utilities, PDF tools, generators, and calculators — with one unusual property: everything runs entirely in your browser.

Why in-browser matters

Traditional online converters upload your files to their servers, process them there, and send back the result. That means your photos, documents, and data pass through — and often sit on — someone else's computer. Glarso works differently: modern browsers are powerful enough to do the conversion themselves, so your files never leave your device.

This design also means no upload waits, no processing queues, no file size limits, and no need for accounts — there's simply no server doing the work.

Get in touch

Have a tool request or found a bug? We'd love to hear it. In the meantime, browse all tools.