Free Online Text & Data Tools

Text and data tools handle the unglamorous but constant work of testing, comparing, and reshaping raw text and structured data before it goes anywhere else. The regex tester lets you try a pattern against real sample text and see, highlighted live, exactly what it matches, plus a plain-English breakdown of what each group and quantifier in the expression is doing, useful both for writing a new regex and for understanding one someone else wrote. The diff checker lines up two blocks of text or JSON side by side and highlights precisely what changed, which is often faster than squinting at a git diff for a config file or an API response. The Markdown table generator turns pasted CSV or tab-separated data into a properly aligned Markdown table for a README or ticket in one step, and the fake data generator produces realistic India-specific sample records, including names, addresses, and phone numbers, for populating a form or a test database without using anyone's real information. As with the rest of the toolkit, everything runs locally in your browser: pasted text, sample data, and comparisons are never sent to a server or stored anywhere.