Developer Tools

The curl flags you actually use, most-wanted first: download with -O, follow redirects with -L, headers with -I, POST JSON with -d and a content type, plus why -sS beats...

Practical Linux tar cheatsheet, create and extract first: tar -czf to create a gzip, tar -xzf to extract (the eXtract Ze File trick), list with -tzf, extract to a folder...

Practical Linux find cheatsheet, most-wanted recipes first: find by name, big files over 100M, recently modified, find and delete, exec versus the trailing semicolon, xargs, maxdepth, empty, and pruning node_modules....

WCAG 2.2 AA in 2026: the five issues that fail most sites (contrast, alt text, labels, link text, page language), the POUR principles, the EAA and ADA legal reality, and...

Convert YAML to JSON and back in your browser. Clear errors on anchors, tags and multi-doc files instead of silent mangling, plus honest notes on YAML footguns.

Convert JSON to CSV and CSV back to JSON in your browser. Real RFC 4180 parser, nested object flattening, delimiter choice, type inference. Nothing uploaded.

Convert decimal, hex, binary, octal and any base 2 to 36 live as you type. BigInt handles huge integers exactly, with a two's complement view. In-browser.

Free case converter that splits camelCase boundaries correctly. Switch between 11 cases including snake_case, PascalCase and Title Case, all in your browser.

Count words, characters, sentences and reading time live as you type. Keyword density plus X, SMS and meta description limits. Runs entirely in your browser.

Compare two texts line by line in your browser. Real LCS diff with ignore case and whitespace options, line numbers, stats and a copyable unified diff. Nothing is uploaded.