Free online developer utilities
Everyday developer helpers: Unix timestamp conversion, cron expression explanations, color conversion, a regex tester, a diff checker, Markdown and HTML previews and a QR code generator. All 8 tools are free, need no sign-up and run entirely in your browser.
Unix Timestamp Converter
Convert epoch time to dates and back
Cron Expression Parser
Explain cron schedules in plain English
Color Converter
Convert between HEX, RGB, HSL, HSV and CMYK
Regex Tester
Test regular expressions with live highlighting
Diff Checker
Compare two texts and highlight changes
Markdown Preview
Live-preview GitHub-flavored Markdown
HTML Preview
Render HTML and CSS live
QR Code Generator
Create QR codes from text or URLs
