Version

    Support & Contact

    Have questions, feedback, or found a bug? We'd love to hear from you!

    piyushdoorwar+devtools@gmail.com

    Whether it's a bug report, feature request, or general inquiry, feel free to reach out!

    About this tool

    Developer Tool

      Your input is processed locally in your browser and is not uploaded by Dev Tools.

      Settings

      Stored on this device

      Dev Tools runs entirely in your browser, so the only copy of anything it saves is here. Clearing removes it for every tool and cannot be undone.

        Removed: saved preferences, pinned and recent tools, and the offline copy of the app. Nothing leaves your browser, and nothing is sent anywhere when you clear it.

        Esc

        Open tool

          ↑↓ Navigate Enter Open ⌘K Toggle

          Welcome to Dev Tools

          Your all-in-one developer utilities dashboard — powerful, fast, and free

          All processing is local — no server, your data never leaves your browser.

          Recently used

          Your last opened tools appear here.

          Last 5

          Quick launch

          Popular utilities for common dev work.

          Popular
          Base Converter Bcrypt Hash Generator Certificate Decoder Chmod Calculator Color Converter Cron Expression Generator Crypto Generator CSV ⇄ JSON Converter Docker Run to Compose Converter Encoder / Decoder .env ⇄ JSON ⇄ Shell Converter Fake Data Generator File Compressor Git Cheatsheet Hash Generator HTML Preview HTTP Header Builder HTTP Status Codes ID Generator Image Toolkit JSON Diff JSON Formatter & Query JSON ⇄ Toon Converter JSON ⇄ XML Converter JSON ⇄ YAML ⇄ TOML Converter JWT Debugger Key Pair Generator Keyboard Event Inspector Lorem Ipsum Generator Markdown Editor Math / Expression Evaluator MIME Type Lookup Open Graph / Meta Tag Generator OTP Generator QR Generator Regex Cheat Sheet Regex Tester Slug Generator / String Escaper SQL Formatter Subnet Calculator SVG Placeholder Generator Text Case Converter Text Cleaner Text Diff Text Encrypt / Decrypt Timestamp Converter Unicode / Character Inspector Unit Converter URL Parser User-Agent Parser Word & Character Counter
          Select a tool from the sidebar or press ⌘K to search
          Loading tool...
          Connecting 0%