Top Browser Dev Tools of 2026
Dev Tools JSON CSS Productivity
More and more developer tools run directly in the browser — no installation, no registration, completely free. Here are 8 hand-picked tools from Goku Prompt Hub.
JSON Formatter & Validator
Processing API JSON responses is a daily task. A good formatter should support:
- Syntax highlighting
- Collapse / expand nodes
- Minify / beautify toggle
- Error location
CSV ↔ JSON Converter
Batch data processing needs reliable CSV ↔ JSON conversion with:
- Auto-detect delimiters
- Encoding detection
- Chunked processing for large files
Password Generator
Secure password generation with:
- Adjustable length (8–64 chars)
- Uppercase, lowercase, digits, special characters
- Exclude ambiguous characters (1/l, 0/O)
QR Code Generator
QR codes have expanding use cases in modern development:
- Wi-Fi config codes
- Contact vCard
- Payment links
- Calendar events
Base64 Encoder / Decoder
Widely used in data transfer:
- Text ↔ Base64
- Image ↔ Base64 (Data URL)
- File ↔ Base64
UUID Generator
Supports multiple UUID versions:
- UUID v4 (random)
- UUID v7 (time-ordered)
- Batch generation
- Uppercase / lowercase
Hash Calculator
Supports major hash algorithms:
- MD5, SHA-1, SHA-256, SHA-512
- HMAC
- File hash verification
Regex Tester
The essential regex debugging tool:
- Real-time match highlighting
- Group capture display
- Common regex template library
Conclusion
All tools are open-source, free, and run client-side — your data never leaves your computer. Visit the Goku Prompt Hub Tools page to use them.