How to Read a Cron Expression
Learn the five cron fields, read common schedules, avoid day and time-zone mistakes, and check the next five run times before deployment.
Converters
Converters & Generators
Move data between useful formats, generate identifiers and QR codes, or translate dates and colors with immediate results. Every converter and generator works in your browser, so your input stays on your device.
10 tools
Converters & Generators
Popular
Base64 Encode/Decode
Encode or decode Base64 text and files.
URL Encode/Decode
Percent-encode or decode URLs and parameters.
UUID Generator
Generate v4 and v7 UUIDs in bulk.
Popular
Password Generator
Strong random passwords, made on your device.
Popular
QR Code Generator
QR codes for links, Wi-Fi, email and more.
Color Converter
Convert HEX, RGB, HSL, CMYK and OKLCH.
Color Palette
Pull the dominant colors out of any image.
Timestamp Converter
Unix timestamps to dates, and back.
JSON ↔ CSV
Convert structured JSON and CSV in either direction.
YAML ↔ JSON
Translate YAML and JSON with clear syntax errors.
Guides
How to Pull a Color Palette from a Photo
Extract dominant colors from a photo or logo, copy HEX values, and use the palette to coordinate websites, presentations, and brand materials.
How to Decode a JWT and Read Its Claims
Learn how to decode a JWT, read its header and claims, understand Base64URL, and check an HMAC signature without confusing decoding with verification.
Convert JSON to CSV and CSV Back to JSON
Convert JSON to CSV or CSV to JSON, flatten nested objects, choose comma, semicolon, or tab delimiters, and preserve correctly quoted cell values.
YAML vs JSON: Differences and How to Convert
Compare YAML vs JSON syntax, comments, indentation, and common uses, then learn how to convert YAML to JSON and diagnose line and column errors.
How to Make a QR Code for WiFi
Learn how to make a QR code for WiFi, choose the right security fields, set print size and contrast, test scanning, and share access safely.
How Strong Should a Password Be?
Learn how strong a password should be, why length and uniqueness matter most, how passphrases and managers help, and when to add two-factor authentication.