Index
utils.9odo.com
Small tools that do one thing. One path each, no account, nothing leaves your browser.
Tools
- /fact-minute/ Timed math fact sheets
Builds an arithmetic drill you can print with its answer key, or answer on screen against a clock.
For whoever has to produce the sheet that morning — a teacher before first period, a parent at the kitchen table.
It keeps no scores and claims no grade alignment. Nothing you type is saved or sent.
What this is
utils.9odo.com is an index of small web tools. Each tool lives at its own path on this subdomain. The path in the list above is the whole address — there is no deeper nesting and no second domain to remember.
Every tool here is a static page. It is served as plain HTML and CSS with a small amount of JavaScript for the tool itself, so it loads on a slow connection and keeps working offline once the page is open.
How the paths work
The first path segment names the tool. /{tool}/ is its front page, and anything
below it belongs to that tool — its guides, its generated pages, its about page. Links never
cross between tools, so a bookmark keeps pointing at the same thing.
A path that is not in the list above does not exist on this subdomain and returns a 404. Tools are added to the index when they are deployed, not before, so there are no dead links here.
What every tool here does the same way
No account and no sign-up. No file is uploaded: where a tool takes input, that input is processed in your browser. Tools that show ads label them and keep them out of the first screen. Every tool links back to this index, to its own about page, and to the privacy page.
Something wrong?
A wrong result matters more than a broken layout. The useful report names the tool, the exact input, the answer it showed and the answer you expected. The address to send it to is on the about page.