Every developer has a folder of bookmarks for one-off tools — a JWT decoder here, a Base64 encoder there, a cron expression tester somewhere else. Half of them send your data to a server you know nothing about. I built Wizbit.to to fix that. What it is 95+ free developer utilities, all running 100% in your browser. No server ever sees what you paste. No account. No ads. No limits. What's inside Data & encoding
- JSON formatter, beautifier, minifier & validator
- Base64 encoder/decoder
- CSV → JSON, CSV → Markdown, YAML ↔ JSON converters
- ENV file parser and ENV → JSON/YAML converter Security & crypto
- JWT decoder with expiry checker and claims differ
- Hash generator (SHA-256, SHA-512)
- RSA key pair generator & X.509 certificate inspector
- BIP39 seed phrase generator
- Password generator & strength checker Developer utilities
- Regex tester with live match highlighting
- Cron expression builder and syntax decoder
- SQL formatter
- Webhook visualizer and Stripe webhook simulator
- UUID/GUID generator (v4, v5, v7, bulk)
- HTTP status explorer
- CIDR subnet calculator
- Semver comparator Frontend & CSS
- SVG → JSX converter and SVG cleaner
- CSS shadow, clip-path, and glassmorphism generators
- Color converter (HEX, RGB, HSL)
- Bezier curve and spring physics playground AI & LLM tools
- Prompt tokenizer and token calculator
- Context trimmer and prompt compressor
- AI response cleaner and text humanizer VFX & camera (yes, really)
- Depth of field visualizer
- LUT .cube file 3D visualizer
- ACES color space matrix calculator
- Timecode and frame arithmetic calculator
- Focal length / FOV / crop factor matcher Why it's different Most online dev tools are thin wrappers around a server call. That's fine for public data — but when you're pasting a JWT, an RSA private key, an ENV file, or a seed phrase, you're trusting a server you've never audited. Wizbit processes everything locally. The code runs in your tab. Close the tab and it's gone.
source & further reading
dev.to — original article
DeepSeek vs Qwen vs Kimi vs GLM: Which AI API Actually Wins in 2025?
AI Doesn't Recommend the Best Product. It Recommends the Best Explained Product.
Your AI Workloads Are the New Cloud Sprawl — And Nobody Is Watching