Toolenix is a free toolbox of 100+ utilities that run entirely in your browser — merge and compress PDFs, convert images, calculate mortgages, UK stamp duty and US taxes, format JSON, generate QR codes, and many more. No sign-up, no paywall, no watermarks: your files never leave your device, so it's the private alternative to upload-based tools. The site publishes 100+ guides explaining each tool and the concepts behind it. Built as a fast, static site — every tool loads instantly on any device.
