About 1123.net
1123.net is an independent collection of browser-based tools. It exists to answer common everyday questions without accounts, uploads, or clutter.
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What the site is
1123.net provides focused utilities: calculators, unit converters, text tools, and developer helpers. Each tool has its own page, its own explanation, and a single job to do well.
The site is deliberately small. There are no social features, no user profiles, and no paid plans.
How the tools work
Every calculation and file operation runs in your browser using JavaScript and standard web APIs. The site is generated as static HTML and served from a content delivery network, so pages load quickly and there is no application server to query.
Some tools, such as the planned PDF and image utilities, use client-side libraries. Those libraries also run locally, in the same tab.
How the site is funded
1123.net is supported by advertising. Ads are kept outside the tool workspace and are never placed over inputs, results, or buttons.
Corrections and feedback
If a formula, definition, or explanation looks wrong, use the Contact page. Specific reports with the values you entered are much easier to act on than general comments.