Free online utility tools

Count words, characters, sentences, and paragraphs in plain text.

Count characters with and without spaces, plus words and lines.

Convert text to uppercase, lowercase, title case, sentence case, kebab case, or snake case.

Clean pasted text by trimming extra spaces, normalizing line breaks, and removing unwanted blank lines.

Turn pasted rows, CSV, or tab-separated text into a clean Markdown table for docs, READMEs, issues, and notes.

Format, minify, and validate JSON in your browser.

Format YAML, clean indentation, and catch common YAML structure issues in your browser.

Convert pasted CSV into JSON arrays or rows locally in your browser.

Convert JSON arrays or flat objects into CSV locally in your browser.

Paste example JSON and generate a starter JSON Schema in your browser.

Generate TypeScript interfaces and types from pasted JSON examples locally in your browser.

Generate UUID v4 values, bulk UUID batches, and UUID reference values locally in your browser.

Convert Unix timestamps to dates and readable dates back to epoch values in seconds and milliseconds.

Parse a URL into protocol, host, path, query parameters, and fragment without fetching the page.

Format XML, clean indentation, and check XML parse errors in your browser.

Format, minify, and clean up SQL queries in your browser.

Compare two text blocks and highlight added, removed, and unchanged text.

Encode plain text to Base64 or decode Base64 back to readable text.

Encode characters into HTML entities or decode HTML entities back to readable text in your browser.

Encode URL components or decode percent-encoded text in your browser.

Build campaign URLs with UTM source, medium, campaign, term, and content parameters.

Preview a search result snippet from a title, URL, and meta description.

Generate robots.txt rules, check core syntax, and test crawler access against URL paths in your browser.