Format and inspect JSON locally in the browser.

Test patterns with immediate front-end feedback.

Keep reusable commands and code fragments close to the workspace.

Track important site links before shipping changes.

Classical ciphers and encoding utilities.

HEX, RGB, HSL, contrast checker, and palette generator.

Base64, URL, HTML entities, and Unicode escape.

Unix timestamps to human dates, with relative time.

Create custom QR codes for any text or URL.

Live Markdown to HTML renderer.

Line-by-line text comparison with highlighted changes.

Compress images locally, adjust quality and size.