Toolhast
Developer Tools Suite · 4 Tools

Online Developer & Web Utilities

Fast, privacy-first developer tools and web utilities that execute entirely inside your browser. Format JSON payloads, convert encodings, and inspect data structures without leaking API tokens, passwords, or customer data to external servers.

Tools in this category

  • ⚡ Beautify & Minify

    JSON Formatter & Validator

    Free online JSON formatter, validator, and minifier: beautify messy JSON, fix errors, and minify code instantly. 100% private in-browser with zero uploads.

    Open ToolIn-Browser
  • 🔐 UTF-8 & Files

    Base64 Encoder & Decoder

    Free online Base64 encoder and decoder: encode and decode text or files to Base64 with UTF-8 support. 100% private in-browser with zero server uploads.

    Open ToolIn-Browser
  • 🔗 RFC 3986 & Query

    URL Encoder & Decoder

    Free online URL encoder and decoder: encode and decode URLs and URI query parameters with UTF-8 percent-encoding. 100% private in-browser with zero uploads.

    Open ToolIn-Browser
  • 🎲 Crypto v4 CSPRNG

    UUID & GUID Generator

    Free online UUID and GUID generator: generate random RFC 4122 version 4 UUIDs instantly in bulk or single. 100% private in-browser with zero tracking.

    Open ToolIn-Browser