Free Developer Tools
10 browser-based tools for developers. No signup, no tracking, nothing leaves your device.
Browse all tools ↓Why Punchbit?
100% Browser-Based
Every tool runs entirely in your browser. Your data never touches a server. No uploads, no processing queues, no privacy concerns.
No Account Required
No signup, no login, no email. Open a tool and start working. Your favorites and preferences are saved locally in your browser.
Always Free
Every tool is completely free with no usage limits. Supported by non-intrusive native ads — no popups, no tracking.
JSON Formatter & Validator
Format, validate, and minify JSON data with syntax highlighting and error detection. Paste any JSON and instantly see it formatted with proper indentation.
Regex Tester & Debugger
Test regular expressions with live matching, capture groups, and flag support. See matches highlighted in real-time as you type.
JWT Decoder & Inspector
Decode and inspect JSON Web Tokens. View the header, payload, and check expiration status without any external libraries.
Base64 Encoder & Decoder
Encode text to Base64 or decode Base64 strings back to plain text. Handles UTF-8 characters correctly.
Cron Expression Parser
Parse and explain cron expressions in human-readable format. See next run times and use preset templates for common schedules.
UUID Generator
Generate cryptographically random v4 UUIDs. Bulk generate up to 100 at once with one-click copy.
Hash Generator (SHA-256, SHA-512)
Generate MD5, SHA-1, SHA-256, SHA-384, and SHA-512 cryptographic hashes from any text input.
Text Diff Checker
Compare two texts side by side with color-coded differences. See additions, deletions, and changes highlighted line by line.
Color Converter (HEX, RGB, HSL)
Convert between HEX, RGB, HSL, and CSS color formats. Live preview with a color picker and one-click copy for all formats.
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates. See current time, relative time, and multiple date formats with live updates.