Developer tools

Format, validate, and minify JSON. Runs entirely in your browser, your data is never uploaded.

Instantly see your public IP address, screen resolution, and browser info.

Encode text to Base64 or decode it back. Runs entirely in your browser.

Percent-encode text for URLs or decode it back. Runs in your browser.

Generate SHA-1, SHA-256, SHA-384, or SHA-512 hashes of text. Runs in your browser.

Generate one or many random v4 UUIDs. Runs entirely in your browser.

Pick a colour and get its hex and RGB codes. Runs entirely in your browser.

Generate placeholder paragraphs for designs and mockups. Runs in your browser.

Create a downloadable CODE128 barcode from text or numbers. Runs in your browser.

Convert a Unix timestamp to a readable date and back. Auto-detects seconds or milliseconds. Runs in your browser.

Paste a JSON Web Token (JWT) to read what's inside it, the header and data. Runs entirely in your browser; your token is never uploaded.