Reference Tools
7 free reference tools that run entirely in your browser.
Tailwind CSS Colors
Browse and copy all Tailwind CSS color palette values.
HTTP Status Codes
Searchable reference for all HTTP status codes with descriptions.
IP Address Info
Show your current public IP address, location, ISP, and timezone.
DNS Lookup
Query DNS records (A, AAAA, MX, NS, TXT, CNAME) for any domain.
MIME Type Lookup
Find the Content-Type for a file extension, or search MIME types.
Unicode Character Lookup
Inspect Unicode code points, HTML entities, and JS escapes for any character or emoji.
Crontab Describe
Translate a cron expression into plain English.
About reference tools
These 7 reference tools cover the tasks developers reach for most. Each one runs client-side, so your input never leaves your device and every tool works offline after the first visit. No account, no upload, no tracking.