Developer Tools
Everyday utilities for developers: format and validate JSON, encode and decode Base64 and URLs, generate UUIDs and strong passwords, and convert colours between HEX, RGB and HSL.
Inputs are processed locally in your browser, so secrets and data you paste stay on your machine.
All developer tools (8)
- Password Generator Strong random passwords and passphrases, made privately in your browser.
- QR Code Generator Make a free static QR code for any link or text.
- JSON Formatter & Validator Format, validate and minify JSON, with exact line and column errors.
- Base64 Encode & Decode Encode text or files to Base64 and decode it back, privately.
- URL Encode & Decode Percent-encode or decode text and links, and read query strings.
- UUID Generator Make v4 or v7 UUIDs in bulk, and inspect any UUID.
- Color Converter Convert HEX, RGB, HSL, HSV and CMYK colors and check contrast.
- IP Subnet Calculator Network, broadcast, host range and mask for any IPv4 or IPv6 prefix.