Developer ToolBox

ToolBox Pro — Developer Tools

Seven essential developer tools in one click — right from your browser toolbar. Stop juggling a dozen sketchy single-purpose sites. ToolBox Pro packs the utilities you use every day into one fast, clean, privacy-first popup. No ads, no sign-ups, and nothing ever leaves your device.

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JSON Formatter & Validator — Beautify, minify, validate, and sort JSON. Clear error messages with line numbers, plus a collapsible tree view for large responses. Password Generator — Create strong, random passwords with adjustable length, character-set toggles, and a live strength meter. Word & Character Counter — Real-time counts for words, characters, sentences, paragraphs, and estimated reading time. Base64 Encoder / Decoder — Convert text ↔ Base64 with full Unicode support. One-click swap and copy. URL Encoder / Decoder — Encode or decode URLs and query strings, with a toggle for full-component vs. whole-URL encoding. Diff Checker — Compare two texts side by side and highlight every difference. HTML Stripper — Strip tags to extract clean plain text, with options to preserve line breaks and decode entities. ━━━━━━━━━━━━━━━━━ WHY TOOLBOX PRO ━━━━━━━━━━━━━━━━━

✓100% private — everything runs locally; your data is never uploaded or logged ✓ No ads, no trackers, no account required ✓ Lightning fast with one-click copy everywhere ✓ Clean, modern dark UI with a friendly welcome screen ✓ Works offline — no internet needed for most tools ✓ Compatible with Chrome, Edge, Brave, and other Chromium browsers

Whether you're a developer debugging an API, a QA engineer, a writer, or a student, ToolBox Pro keeps your most-used utilities one click away.

Install now and streamline your workflow!