29 Free Online Tools - Essential for Work and Study
Format and beautify JSON data
Encode and decode Base64
URL encode special characters
Test regex expressions online
Convert Unix timestamps
Convert between number bases
Generate MD5 hash
Generate unique identifiers
Convert Unicode characters
Generate Cron expressions
Convert between JSON and YAML
Validate Cron expressions
Encode decode HTML entities
Decode and verify JWT
Preview HTML in real-time
Format and beautify SQL
Format CSS code
Format JavaScript code
Format YAML data
Format XML data
Convert CSV to JSON
Convert JSON to CSV
Calculate various hashes
Quick HTTP status lookup
Parse User Agent strings
Extract Meta tags
Keyboard key codes reference
Encrypt and decrypt text
Compare text differences
JieBang Developer Tools collection includes 30+ essential online developer tools like JSON formatter, Base64 encoder, regex tester, base converter, MD5 hash, UUID generator and more. No installation needed.
A regex tester lets you write and test regular expressions against sample text in real-time, highlighting matches as you type.
Enter the URL, select HTTP method (GET/POST/PUT/DELETE), add headers and body, then click Send. JieBang's API Tester shows the response instantly.
Yes, all JieBang developer tools are 100% free β JSON formatter, Base64 encoder, regex tester, API tester, cron validator, and more.