Tools

Each one is a single HTML file with no dependencies and no build step. They run entirely in your browser — nothing is uploaded anywhere.

Contrast checker

Check a text and background pair against WCAG AA and AAA, and get the nearest shade that passes when it fails.

Convert an array of objects to CSV and back. Quotes, commas and line breaks inside values are handled correctly.

Build a wa.me link with the message already written, plus the HTML snippet to drop into a page. Arabic supported.

Read a token header and payload, with the expiry and issued-at claims turned into real dates and an expired badge.

Resize and compress a photo with a live before-and-after, and see the exact saving before you download it.

Turn a title into a URL slug. Arabic can be transliterated into Latin letters or kept as it is.

Live highlighting as you type, a table of capture groups, and a replace preview before you commit to it.

Compare two versions line by line and see what was added, removed or left alone. Long unchanged runs collapse.

Read a cron expression in plain English, check the next five runs, and get the Laravel scheduler equivalent.