🚀 Live Site: https://devstack.tools 📚 GitHub Repository: https://github.com/devstackvamsi/devstack
DevStack is a comprehensive suite of free online developer tools designed for privacy-first development with local-only processing. All tools run entirely in your browser - no data is sent to external servers.
- JWT Analyzer - Create, decode, validate, and analyze JWT tokens with comprehensive claim inspection
- Hash Generator - Generate MD5, SHA-1, SHA-256/384/512, BLAKE2B, CRC32 checksums
- Key Generator - Generate RSA key pairs, HMAC secrets, export in JWKS format
- Certificate Utility - Analyze PEM certificates, generate self-signed certs, create CSRs, build P12 files
- TOTP/2FA Generator - Generate time-based one-time passwords with QR code support
- Base64 Tool - Encode and decode Base64 strings with UTF-8 support
- JSONLint - Validate, format, and minify JSON data with syntax highlighting
- Text Diff & Compare - Compare texts side-by-side with highlighted differences
- Regex Tester - Test regular expressions with real-time matching and group extraction
- UUID Generator - Generate random UUIDs (Universally Unique Identifiers) v4
- Timestamp Converter - Convert Unix timestamps to human-readable dates
- Swagger/OpenAPI Preview - Load, validate, and preview API specifications
- Privacy First - All processing happens locally in your browser
- No Registration - Use all tools instantly without signing up
- Dark Mode Support - Toggle between light and dark themes
- Mobile Responsive - Works on all devices and screen sizes
- Fast & Lightweight - Optimized for performance
- Free Forever - All tools are completely free to use
- Debug JWT tokens during authentication flows
- Generate secure keys for API authentication
- Validate JSON responses from APIs
- Test regex patterns for form validation
- Compare code differences
- Generate UUIDs for database records
- Analyze SSL certificates
- Generate test certificates for development
- Convert timestamps from log files
- Hash generation for file integrity
- JWT security analysis
- Certificate chain validation
- TOTP setup for 2FA implementation
- Hash verification
- Visit https://devstack.tools
- Choose any tool from the navigation
- Start using immediately - no setup required!
- Local Processing: All data stays in your browser
- No Data Collection: We don't collect or store any user data
- No Analytics: No tracking scripts or cookies
- HTTPS Only: Secure connections for all requests
- Open Source: Transparent and auditable code
DevStack can be installed as a PWA on your device:
- Add to home screen on mobile
- Offline functionality (coming soon)
- Native app-like experience
Create and decode JSON Web Tokens with support for:
- HMAC algorithms (HS256, HS384, HS512)
- RSA algorithms (RS256, RS384, RS512)
- PSS algorithms (PS256, PS384, PS512)
Generate cryptographic hashes with:
- MD5, SHA-1 (legacy support)
- SHA-256, SHA-384, SHA-512 (recommended)
- BLAKE2B (modern, fast)
- CRC32 checksums
Complete certificate management:
- Parse and analyze existing certificates
- Generate self-signed certificates
- Create Certificate Signing Requests (CSR)
- Build P12/PKCS#12 bundles
- React - Modern UI framework
- Tailwind CSS - Utility-first CSS
- Lucide Icons - Beautiful iconography
- Vite - Fast build tool
- Local Storage - Browser-based persistence
Built with ❤️ by Vamsikrishna Patchava
- GitHub: @vamsidevbits
- Project: DevStack Repository
- Website: devstack.tools
developer tools, JWT decoder, JWT creator, hash generator, MD5 hash, SHA256 hash, base64 encoder, base64 decoder, JSON validator, JSON formatter, regex tester, regular expression, TOTP generator, 2FA generator, two-factor authentication, certificate utility, SSL certificate, UUID generator, timestamp converter, unix timestamp, text diff, compare text, swagger preview, openapi, developer utilities, online tools, free tools, privacy-first tools, local processing tools
Start using DevStack Tools today at devstack.tools