What OmniWebTools is, who builds it, and why every tool runs inside your own browser.
OmniWebTools (OWT) is a toolbox of small developer and designer utilities (encode, format, convert, hash, generate, inspect) collected in one place so you stop keeping a folder of bookmarks to a dozen single-purpose sites.
There is no server doing the work. Every tool is JavaScript that runs on your own machine: the text you paste, the images you drop and the results you copy never leave the page. You can watch the network tab stay silent, or disconnect entirely — the tools keep working.
That is a deliberate constraint, not a marketing line. It rules out a few features other toolboxes offer, and it is why the tools that need real computing power are honest about it rather than quietly shipping your data somewhere.
Most of these tools already exist somewhere, wrapped in ads, sign-up walls, or a paste box that POSTs your data to an unknown backend. Formatting a JSON blob from a production log should not involve uploading it to a stranger. OWT is the version of those tools that a developer would actually trust with the contents of their clipboard.
Every tool on this site runs locally, signed out, with nothing sent anywhere. That is the default, and no tool sits behind a sign-in.
OWT Pro covers the two things a browser cannot do on its own: an account, which carries your favourites and history between your devices, and an API, which runs any tool from your own projects instead of from this page. Each is opt-in and each is separate from the local tools — which is why the API is something you call deliberately rather than something the site starts doing on your behalf.
The API is the one part that sees your data, and it keeps none of it: input and result are processed and dropped, and the only thing recorded is a count of your requests, so rate limits and fair usage have something to measure.
Pro is a paid add-on. None of it is mandatory: you never need an account, an API key or a subscription to use OmniWebTools, and if none of it interests you, nothing here changes for you — every tool on the site stays free and stays in your browser.
Found a bug, want a tool added, or spotted a result that looks wrong? Mail [email protected] — bug reports with the input that broke it are especially welcome.