About ToolCrix
ToolCrix is a curated toolkit of 33+ everyday utilities spanning calculators, converters, image and PDF helpers, writing tools, and developer essentials. Every tool is designed to do one job well, load instantly, and get out of your way.
Who builds ToolCrix
ToolCrix is independently built and maintained by a small team of developers — not a marketing company or a content farm. The same people who write the code write the guides, which is why every article describes exactly what the tool in front of you actually does, down to the libraries doing the work (Ghostscript compiled to WebAssembly for PDF compression, Tesseract for OCR, FFmpeg for video conversion). If a guide says “your file never leaves your device,” you can verify it yourself: open your browser’s developer tools and watch the network tab while you use any tool.
Why every tool runs in your browser
The defining principle behind ToolCrix is privacy by architecture, not by policy. Every tool runs entirely in your browser using client-side JavaScript and WebAssembly. Your files, text and numbers are processed on your own device and are never uploaded to a server. There are no accounts, no tracking pixels, and nothing to install. Upload-based tool sites ask you to trust a deletion promise; we removed the upload instead.
Because the work happens locally, the tools are fast and work even on a flaky connection. Results are yours to copy or download with no watermarks and no limits.
How ToolCrix stays free
Hosting and development are paid for by the team, and the site may show unobtrusive advertising to cover those costs. No tool or feature is ever paywalled, and we never sell data — there is no user data to sell, because the tools run on your device.
Accuracy and corrections
Calculator logic follows published reference formulas — BMI categories follow WHO ranges, hash functions follow their published specifications, and unit conversions use standard factors — and is covered by an automated test suite that runs before every release. Found a wrong number, a broken tool, or an error in a guide? Email hello@toolcrix.com and we fix it — corrections ship in days, not quarters.
The details
ToolCrix is built with Next.js and served from Cloudflare’s edge network, mobile-first, with a polished dark mode — so it feels at home whether you are on a phone at the checkout or on a desktop crunching numbers for work. You can follow development on X and GitHub.