Developer Tools
Utilities you reach for mid-task, without the ad-covered pages or the risk of pasting payloads into unknown servers: format or diff JSON, decode a JWT, test a regex, read a cron expression, compute a hash, plan a subnet, convert number bases. Everything executes in your browser tab — tokens, configs and dumps never leave your machine, which is the whole point for anything work-related. Bookmark the ones you use; they load instantly.
41 free tools — all run entirely in your browser.
JSON Formatter
Base64 Encoder / Decoder
UUID Generator
URL Encoder / Decoder
Hash Generator
Color Converter
Unix Timestamp Converter
Regex Tester
Aspect Ratio Calculator
Number Base Converter
HEX to RGB Converter
JWT Decoder
Color Contrast Checker
Cron Expression Parser
CSV to JSON Converter
CSS Gradient Generator
JSON to CSV Converter
Markdown Preview
HTML Entity Encoder / Decoder
SQL Formatter
Chmod Calculator
CSS Minifier
IP Subnet Calculator
XML Formatter
Box Shadow Generator
Meta Tag Generator
Bulk UTM Builder
Binary Translator
JSON Diff
Password Strength Checker
Resistor Color Code Calculator
HTTP Status Code Lookup
JSON to YAML Converter
URL Slug Generator
Download Time Calculator
PPI Calculator
PX to REM Converter
Robots.txt Generator
ASCII Table
URL Parser
Markdown Table Generator
← All 328 Toolhub tools