How to Test Regular Expressions Online
Learn how to test and debug regular expressions with live match highlighting using a free browser-based tool. Support for flags and capture groups.
Jun 7, 2026
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Developer Tools Blog
Guides, practical tips, and workflow ideas related to developer tools.
How to Generate UUID v4 Online for Free
Learn how to generate random UUID v4 strings in bulk using a free browser-based tool. Cryptographically secure with one-click copy.
Jun 7, 2026
How to Generate SHA-256 Hash Online
Learn how to generate SHA-256, SHA-384, SHA-512, and SHA-1 hashes from text using a free browser-based tool. Uses Web Crypto API for accuracy.
Jun 7, 2026
How to Decode JWT Tokens Online
Learn how to decode and inspect JWT tokens using a free browser-based tool. View header, payload, and expiration status without sending your token anywhere.
Jun 7, 2026
How to Encode and Decode URLs Online
Learn how to encode and decode URL components using a free browser-based tool. Handle special characters, Unicode, and query strings privately.
Jun 7, 2026
How to Generate Strong Passwords Online
Learn how to generate strong, random passwords using a free browser-based tool. Customize length, character sets, and copy securely.
Jun 7, 2026
How to Generate QR Codes Online for Free
Learn how to generate QR codes from text or URLs using a free browser-based tool. Download as PNG with no tracking or account required.
Jun 7, 2026
How to Encode and Decode Base64 Online
Learn how to encode text to Base64 and decode Base64 back to text using a free browser-based tool. Handles UTF-8 safely with one-click copy.
Jun 7, 2026
How to Format and Validate JSON Online
Learn how to format, validate, and minify JSON using a free browser-based tool. Get readable indentation and clear error messages instantly.
Jun 7, 2026