Saharienne builds focused, free web tools for professionals. Two platforms, each doing one job well: operations maths you can trust, and file handling that never leaves your browser.
35 free calculators for the decisions that run a plant or a business — each result shown with its formula, units and a worked example you can check.
Compress and resize images and shrink PDFs to meet any upload limit. Everything runs in your browser, so your files are never uploaded to a server.
Small, reliable tools that solve one problem well — and get out of your way.
No account, no paywall, no trial. Open a tool and use it.
OpsCalc shows every formula, unit and a worked example, so you can verify the maths.
File Size Tools processes images and PDFs entirely in your browser — files are never uploaded.
Each tool loads quickly, works on mobile, and does its one job without clutter.
Saharienne is an independent maker of free, professional web tools. We build small, reliable utilities that each solve a single problem well, show their workings, and keep your data under your control. The two platforms below are maintained separately and are free to use, with no account required.
Questions or feedback? Write to contact@saharienne.org, or read more on our About page.