Browser tools
Free, single-purpose tools that run entirely in your browser. No account, no upload, no install: the input never leaves the page.
Text counter
Count characters, words, sentences, paragraphs, reading time, and the words you repeat too often. Runs entirely in your browser.
JSON formatter
Format, minify, and validate JSON in the browser. Errors point at the line and column that broke the parse.
Encode / decode
Base64 and URL encode or decode UTF-8 text locally, with clear errors when the input is not valid.
Timestamp converter
Convert Unix timestamps to local, UTC, and ISO dates, and turn a date back into seconds or milliseconds.
Contrast checker
Measure the WCAG contrast ratio between text and background colors and find a nearby color that passes AA.
Every tool is implemented in this repository with plain HTML, CSS, and JavaScript. If a result looks wrong, the contact form reaches us.