About BrowserTools

Experience

I am the sole maintainer of 186+ in-browser tools at BrowserTools. That means I write the conversion logic, wire up the browser APIs, and test edge cases myself. My expertise is client-side web architecture: shipping heavy work (FFmpeg video processing, ONNX background removal, pdf-lib, Canvas imaging) to WebAssembly and Web Workers so everything stays sandboxed in your tab. No upload backend, no user database — just static pages on a global edge network. I live and work in Tbilisi, Georgia (GE), and I'm reachable directly at contact@browsertools.online or on GitHub. You can also browse the growing Guides hub where I document how the tools work under the hood.

Client-Side Architecture: 100% On-Device

Unlike traditional web tools that upload your files to remote cloud servers to process them, BrowserTools is engineered entirely around client-side execution. We harness modern web technologies:

• WebAssembly (WASM): For heavy computational tasks like audio/video extraction (FFmpeg) and client-side AI background segmentation (ONNX Runtime).
• Web Crypto API: For cryptographically random password generation, hashing (SHA-256, MD5), and zero-knowledge k-anonymity checks.
• HTML5 Canvas & Web Workers: For non-blocking image resizing, format conversions (PNG, WebP, JPG), and document manipulation.

Because the entire site is distributed as static pages via high-speed global edge networks, 96% of these tools never send your file anywhere — there is no upload backend and no database. The remaining 7 tools genuinely cannot work that way (an IP lookup has to ask someone where you are), so they say plainly what they send and to whom, rather than claiming a privacy property they do not have.

Free Forever & Ad Policy

Every single utility on BrowserTools is completely free. We do not implement paywalls, usage caps, daily quotas, or intrusive watermarks. To keep the project sustainable and cover global CDN hosting and domain costs, we display non-intrusive advertisements served through Google AdSense. Ads will never interfere with the usability of a tool or compromise your privacy. See our Privacy Policy, Cookie Policy and Disclaimer for ad and cookie details.

How the Tools Are Built & Tested

New and updated tools go through an automated test suite covering feature behaviour (encoding round-trips, conversion accuracy, generator entropy) and adversarial edge cases (malformed input, huge files, hostile strings). Conversions use reference implementations of the relevant standards — RFC 4122 for UUIDs, RFC 3986 for URL encoding, the standard EMI formula for loans — so results match what dedicated desktop software produces. When a calculation has real-world consequences, the page says so plainly and tells you to verify with a qualified professional.

Editorial standards are simple: descriptions describe what the tool actually does (no inflated claims), disclaimers appear on any calculator with financial or health implications, and every page states exactly what runs on your device and what — in the rare case of network-enabled tools — leaves it. You can verify this yourself: open any tool, open your browser's Network tab, and run it — for most tools nothing is uploaded. If a result looks wrong, the Contact page explains what to include so the report is reproducible (tool URL, input, expected vs actual output, browser version).

Contact & Support

BrowserTools is a one-person independent project, and I read everything that comes in — bug reports, broken-edge cases, and tool suggestions most of all. If something misbehaves, tell me your browser version and what you fed it; if a tool you need doesn't exist yet, ask and I'll look into building it. Visit the Contact page or write directly to contact@browsertools.online. Expected response time: 24–48 hours.

— Guga · Tbilisi, Georgia