Free Online Developer Tools
Essential utilities for developers — format, encode, decode, and test.
JSON Formatter
Format, validate, and beautify JSON data with syntax highlighting.
Base64 Encoder/Decoder
Encode and decode Base64 strings instantly. Supports text and file input.
URL Encoder/Decoder
Encode or decode URL components. Handles special characters safely.
Regex Tester
Test regular expressions with real-time matching, highlighting, and group capture.
Hash Generator
Generate MD5, SHA-1, SHA-256, and SHA-512 hashes from any text input.
JWT Decoder
Decode JWT tokens to inspect the header, payload, and expiry. Tokens are never sent anywhere.
Timestamp Converter
Convert between Unix timestamps and human-readable dates in UTC and local time.
Text Diff Checker
Compare two blocks of text and highlight added, removed, and changed lines side by side.
About Developer Tools
ToolPilot provides a curated collection of free developer tools that run entirely in your browser. Unlike traditional online tools that upload your files to remote servers, every tool on this page processes your data locally using modern web technologies. Your files never leave your device.
No registration, no watermarks, no file size limits imposed by servers. Just open a tool and start working — on any device, anywhere. All 8 tools in this category are completely free to use.