About Browser-Based Tools by Gleanso
Professional tools that respect your privacy — because your files are your business.
Our Mission
We believe professional-grade tools shouldn't require you to hand over your files, create an account, or pay a subscription fee. Browser-Based Tools by Gleanso is built around a single principle: every tool runs entirely in your browser.
Whether you're creating a digital signature, converting a PDF, or encoding data — your files stay on your device. They never touch our servers. We never see them.
Privacy by Design
No Uploads
Every tool uses native browser APIs (Canvas, FileReader, Web Workers) to process data locally on your device.
No Accounts
No sign-up, no email, no password. Just open the tool and use it. It's that simple.
No Data Collection
We don't collect your documents, signatures, or tool outputs. They exist only in your browser's memory.
Technology
Browser-Based Tools by Gleanso is built with Astro, a modern static site framework that ships zero JavaScript by default. Our tools are powered by:
- HTML5 Canvas API — for the signature drawing pad
- pdf-lib — a pure-JavaScript PDF library that runs entirely in the browser, no server required
- Cloudflare Pages — for fast, global static hosting
- Tailwind CSS v4 — for a modern, responsive design
Who We Are
Browser-Based Tools by Gleanso is a product of Gleanso — a software company focused on building tools that are useful, fast, and private.
Have a tool you'd like to see built? Get in touch.