Your everyday
developer toolbox.
Format, convert and debug with 14 free tools. Your tool inputs are processed in your browser. No account needed.
Unix Timestamp
Convert between Unix timestamps and readable dates in multiple timezones.
timestamp
Cron Parser
Validate 5-field cron expressions, explain them and list next run times.
cron
JSON Formatter
Format, minify and validate JSON while preserving large numbers.
json
curl Converter
Convert curl commands between bash, cmd.exe and PowerShell.
curl
URL Encode / Decode
Encode or decode URL components and whole URLs.
url
Base64
Encode and decode Base64 with full UTF-8 and URL-safe output.
base64
HTML Entities
Escape and unescape HTML special characters in text.
html-entity
Color Converter
Convert colors between HEX, RGB and HSL with a live preview.
color
Regex Tester
Test regular expressions with match highlighting and groups.
regex
Hash Generator
Compute MD5, SHA-1, SHA-256 and SHA-512 digests of any text.
hash
JWT Decoder
Decode JWT header and payload and check token expiry.
jwt
CIDR Calculator
Calculate network, broadcast and usable hosts for IPv4 blocks.
cidr
HTTP Status Codes
Browse the meaning of every common HTTP status code.
http-status
UUID Generator
Generate RFC 4122 v4 UUIDs in bulk.
uuid