Who runs this site
SAW TOOLS is published by SAW CONCEPT, a French company based in south-west France. The site is designed, built and maintained in-house by its founder. There are no outside investors, no marketing team and no outsourced writers: one person decides what gets published and stands behind it. Full legal details (company name, registration number, host, publication director) are on the legal notice page.
Why this site exists
Most "free online tools" share the same flaws: they send your data to a server you don't control, demand a sign-up, flood the screen with intrusive ads, then vanish when their business model collapses. SAW TOOLS grew out of a simple conviction: a unit converter, a password generator or a Base64 encoder has no technical reason to send anything over a network. It can all be computed locally, in the browser tab. So that's what we do.
The three principles that never move
- Everything in the browser. None of our tools send your input to a server. When you generate a password, the randomness comes from
crypto.getRandomValues()in your browser; when you encode Base64 or convert a colour, the work happens in your tab's JavaScript engine. You can check it yourself: open the network inspector (press F12, Network tab) and use any tool — you won't see a single request leave for our servers. - No hidden collection. No account, no email required, no quota, no "free trial" that turns into a subscription. We measure audience in aggregate, but your input into the tools is never recorded, because it never leaves your device. The details are in our privacy policy.
- Content, not just buttons. Every tool comes with an explanation of what it does, its limits and when not to use it, and most link to a long-form guide that digs into the subject. A user who understands what they're doing makes better choices than a captive one.
How the site is funded
SAW TOOLS is free and will stay that way. To cover hosting and development time, the site shows contextual advertising and, in some guides, clearly labelled affiliate links (for example to password managers). Those links don't shape our recommendations: we mention Bitwarden, which has no affiliate programme and earns us nothing, whenever it's the right answer. No advertising is intrusive — no pop-ups, no interstitials, no auto-playing video. If you use an ad blocker, the site works exactly the same way.
How the content is produced
The guides aren't mass-generated filler: each one is researched, proofread and corrected before publication, with dated references and concrete examples (the Mars Climate Orbiter lost to a unit error, the 2019 redefinition of the kilogram, the rise of quishing through QR codes…). When information goes stale, we update it rather than let it rot. Spot a mistake? Write to us — we're happy to fix it and credit you.
What's next?
We add new tools as real needs surface from users, on one condition: that we can build them on the same principles — 100% client-side, no collection, no hidden dependencies. Got a tool idea, a bug, a question? The contact page leads to a real inbox, read by a real person.