About DevBolt

Fast, free, and private developer utilities — no signup, no clutter.

What is DevBolt?

DevBolt is a collection of free online utilities built for developers and power users. Every tool runs entirely in your browser — your data never leaves your device. No accounts, no tracking, no dark patterns. Just open a tool and use it.

Need more? A Pro subscription unlocks unlimited daily usage, removes ads, and adds features like batch processing and API access.

Built by AI, for Real Use

DevBolt is an experiment in autonomous software. The site is designed, coded, deployed, and maintained by a team of AI agents running on a schedule — each with a specific role:

Developer — builds features, fixes bugs, and improves code quality
Strategist — researches which tools to build next and plans the roadmap
Health Monitor — checks that the app builds, lints, and deploys correctly
Reporter — summarizes agent activity for the human owner

A human (Vincent) provides the infrastructure and keeps the lights on, but the product decisions — what to build, how to build it, and when to ship — are made by the agents. The source code is public on GitHub.

Available Tools

JSON Formatter Base64 Codec Hash Generator UUID Generator Color Converter JWT Decoder Regex Tester URL Parser Markdown Preview Diff Checker Epoch Converter Password Generator Lorem Ipsum Generator Case Converter Number Base Converter CSV ↔ JSON Converter Cron Expression Parser Word & Character Counter URL Encoder & Decoder JSON ↔ YAML Converter Chmod Calculator HTML Entity Encoder CSS Gradient Generator QR Code Generator SQL Formatter XML Formatter Code Minifier & Beautifier Image to Base64 Color Palette Generator JSON to TypeScript HTML ↔ Markdown YAML Formatter JSON Path Tester SVG Optimizer Image Compressor Box Shadow Generator Color Contrast Checker Flexbox Generator Grid Generator Border Radius Generator Text Shadow Generator CSS Animation Generator Markdown Table Generator Text ↔ Binary Converter Meta Tag Generator JSON Schema Validator IP / CIDR Toolkit .gitignore Generator Crontab Generator Favicon Generator URL Slug Generator cURL to Code JSON to CSV Converter Tailwind CSS Generator Open Graph Preview JS/TS Playground JSON Diff TOML ↔ JSON/YAML Encode / Decode Multi-Tool Docker Compose Validator Privacy Policy Generator HTTP Status Codes Date Format Tester JSON Mock Data Generator README Generator Dockerfile Validator Kubernetes YAML Validator robots.txt Generator OpenAPI / Swagger Validator Zod Schema Generator Placeholder Image Generator Nginx Config Generator .env File Validator File Hash Calculator ASCII Art Text Generator Regex Generator LLM Token Counter AI Model Comparison Git Command Builder CSP Header Builder HTML to JSX Converter JSON to Code Generator Code Screenshot Generator CSS to Tailwind Converter JSON Visualizer SVG to JSX Converter AI Prompt Builder MCP Config Builder OpenAPI to TypeScript JSON to Zod Converter JWT Builder tsconfig.json Builder GraphQL to TypeScript package.json Generator Security Headers Generator TypeScript to JavaScript JSON to SQL Converter JSON to GraphQL Schema Git Diff Viewer SQL to TypeScript/Prisma/Drizzle Compression Tester TypeScript 6.0 Migration Checker ESLint to Biome Converter AI Code Security Scanner Code Complexity Analyzer HTTP Request Builder GitHub Actions Validator Tailwind to CSS Converter .env to Docker/K8s Converter JSON ↔ XML Converter CSS Unit Converter HTML Table Generator Aspect Ratio Calculator CSS Clip-path Generator CSS Filter Generator XPath Tester SQL Playground

Privacy First

All tools process data locally in your browser using the Web Crypto API and standard JavaScript. We use Vercel Analytics for privacy-friendly, cookieless page-view metrics — nothing else. Read our Privacy Policy for full details.