About this site

Graffiti Generator is a free graffiti generator. It runs in your browser: open the page, enter your figures and get the answer straight away, with the working shown.

How the tool is checked

Every release of the graffiti generator is checked by an automated test suite of 80 checks in a real browser — normal values, edge cases and invalid input — and on desktop and phone screen sizes before it goes live.

Sources

The formulas and reference values in the guides follow published standards and primary sources, linked where they are used: en.wikipedia.org, developer.mozilla.org, html.spec.whatwg.org.

How we write

Pages are written and maintained by the site's editorial team. We aim to answer the question people actually ask, show worked examples with real numbers, and say plainly where a calculator cannot replace professional advice. Nothing on this site is sponsored content.

Found a mistake?

Published October 8, 2026, last reviewed October 12, 2026. Corrections are welcome via the contact page; confirmed fixes go out with the next update.

How the site is paid for

Advertising keeps the site free. Ads are kept separate from results and do not influence what the tool shows.

— Graffiti Generator editorial team