Developer tools that respect your privacy
All tools run entirely in your browser. No servers, no accounts, no data collection. Just fast, reliable utilities for everyday development work.
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7 categories covering every developer workflow
Featured Tools
Our most powerful and frequently used developer tools
JSON Formatter & Validator
Format, validate, and beautify JSON data online. Instant syntax highlighting and error detection.
JWT Decoder
Decode and inspect JWT tokens instantly. View header, payload, and signature without a secret.
Base64 Encoder / Decoder
Encode text or files to Base64 and decode Base64 strings back to plain text. Instant, private.
UUID Generator
Generate UUID v1 and v4 identifiers instantly. Bulk generation with copy-to-clipboard support.
SQL Formatter
Format and beautify SQL queries online. Supports MySQL, PostgreSQL, SQLite, and T-SQL.
Password Generator
Generate strong, secure random passwords with custom length, symbols, numbers, and case options, including 16-character passwords.
Popular Tools
Most frequently used by developers
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Free Developer Tools — No Login, No Tracking
ToolPlanet is a comprehensive collection of free developer utilities designed for backend developers, frontend engineers, DevOps professionals, and students. Every tool runs entirely in your browser — your data never leaves your device.
Our platform covers the most common developer needs: formatting and validating JSON, XML, and SQL; decoding and generating JWT tokens; encoding with Base64 and URL encoding; and utility tools like UUID generation, regex testing, and cron expression building.