Developer tools
Fast, no-login utilities for everyday coding.
Format, validate and minify JSON in your browser.
Encode or decode Base64 text, UTF-8 safe.
Decode a JWT's header and payload in your browser.
Test regular expressions with live match highlighting.
Percent-encode or decode URLs and query strings.
Generate random UUID v4 identifiers in bulk.
SHA-1, SHA-256, SHA-384 and SHA-512 of any text.
Convert Unix timestamps to dates and back.
Convert colors between HEX, RGB and HSL.
Compare two texts and highlight what changed, line by line.
Explain a cron schedule in plain English and see the next run times.
UPPERCASE, lowercase, Title, camelCase, snake_case and more.
Placeholder text — paragraphs, sentences or words.
Build a gradient and copy the CSS.
Convert JSON to CSV and CSV to JSON in your browser.
Generate TypeScript interfaces or Go structs from JSON.
Convert YAML to JSON and JSON to YAML in your browser.
Write Markdown, see the HTML preview and copy the source.
Turn an image into a Base64 data URI — in your browser.
Format and beautify SQL for 10+ dialects — in your browser.