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Essential utilities for developers and programmers. Click on any tool below to see detailed instructions.
All tools run directly in your browser - no data is sent to any server.
Format, validate, and beautify JSON data. Minify or expand JSON.
View detailed guide >Encode text to Base64 or decode Base64 strings.
View detailed guide >Encode or decode URL strings for safe transmission.
View detailed guide >Generate MD5, SHA-1, SHA-256, and other hash values.
View detailed guide >Generate random UUIDs (v4) or other UUID versions.
View detailed guide >Convert between Unix timestamps and human-readable dates.
View detailed guide >Decode JWT tokens to view header and payload.
View detailed guide >Generate QR codes from text or URLs.
View detailed guide >Pick colors and convert between HEX, RGB, and HSL.
View detailed guide >Generate placeholder text for designs and mockups.
View detailed guide >