Toolzy — Privacy-First Developer Tools & Utilities Firefox

Toolzy — Privacy-First Developer Tools & Utilities

The ultimate offline developer toolbox. 40+ fast, zero-tracking client-side tools for formatting, encoding, cryptography, regex testing, PDF optimization, and instant quick search right in your new tab or popup.
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Modify request and response headers. No ads, no malware.

Features & Capabilities

⚡ Toolzy — The Ultimate Privacy-First Developer Workspace & Offline Toolbox

Tired of opening slow, ad-cluttered websites just to format a JSON string, decode a Base64 token, or inspect a JWT?

Toolzy brings 50+ professional developer utilities, formatters, encoders, cryptographic tools, and visualizers directly into your browser. Run everything 100% client-side in your browser with zero network tracking, zero backend servers, and zero data collection.

Whether you need a full New Tab developer hub or a quick keyboard-driven launcher in your toolbar, Toolzy is designed to accelerate your everyday engineering workflow.

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🔒 100% PRIVATE & OFFLINE-FIRST ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ • Zero Server Uploads: All operations run locally inside your browser using WebAssembly, Web Crypto API, and local sandboxes. • Zero Telemetry & Tracking: No analytics, no logging, no external API calls. Your tokens, API keys, and sensitive data never leave your computer. • 100% Offline Capable: Works anywhere, anytime — even without an internet connection.

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🚀 40+ ESSENTIAL DEVELOPER SUITES INCLUDED ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

📦 FORMATTERS & CONVERTERS: • JSON Formatter, Validator & Fixer (with JSON5 & tree navigation) • YAML ⮂ JSON Converter & Formatter • XML Formatter, Minifier & XPath Evaluator • CSS & HTML Beautifiers & Minifiers • JavaScript Formatter, Minifier (Prettier & Terser engines) • SQL Formatter with dialect support (PostgreSQL, MySQL, SQLite) • JSON to CSV / CSV to JSON converter with live preview

🔐 CRYPTO, SECURITY & ENCODING: • Base64 Encoder & Decoder (Unicode UTF-8 safe, URL-safe, Image preview) • JWT Decoder & Inspector (Payload parser, expiration audit, signature check) • AES-256 GCM/CBC Encryption & Decryption (In-browser Web Crypto) • RSA Keypair Generator & Signature Verifier • Hash Generator (MD5, SHA-1, SHA-256, SHA-512, HMAC) • Password & Passphrase Generator (Entropy calculation, customizable rules) • URL Encoder, Decoder & Component Parser

⚡ PRODUCTIVITY & GENERATORS: • UUID / ULID / CUID Generator (Single & Bulk with namespace v1/v4/v5/v7) • Regex Tester & Debugger (Interactive match visualization & cheat sheet) • Cron Expression Tester & Schedule Builder (Human-readable explanations) • API Request Tester (Lightweight HTTP client with headers & curl import) • In-Browser PDF Compressor (Smart image downsampling & metadata stripping) • CSV to PDF / Business Card & Invoice PDF Exporters • Barcode & QR Code Generators (SVG/PNG downloads) • Color Palette Extractor & Contrast Checker (WCAG 2.1 compliance)

🎨 DIAGRAMS & PLAYGROUNDS: • Architecture Diagram Builder (Mermaid.js diagramming) • BPMN Process Flowchart Editor • React & Vue Sandboxed Playgrounds • SQL Query Sandbox & Schema Visualizer

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 💡 DESIGNED FOR YOUR WORKFLOW ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ • 🌐 New Tab Dashboard: Transform your blank new tab into a sleek, dark-mode developer workstation. • 🚀 Quick Popup Launcher: Access your starred tools and 1-click UUID/Timestamp generators from the toolbar. • 🖱 Right-Click Context Menus: Highlight text on any web page to instantly "Format JSON", "Decode Base64", or "Inspect JWT". • 🌓 Rich Dark Mode & Light Mode: Beautiful glassmorphism aesthetic built for long coding sessions.

━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ⭐ OPEN SOURCE & COMMUNITY DRIVEN ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Toolzy is built with love for the developer community. Fast, lightweight, and completely free.

User Growth & Download Statistics

Manifest V3 Add-on Overrides new tab
By:
Sayandeep Majumdar
Daily users:
-
Version:
1.0.0 Last updated: 2026-08-25
Version code:
6430115
Creation date:
2026-08-22
Firefox add-on GUID:
toolzy-suite@sayandeep.dev
Firefox add-on numeric ID:
3058335
Firefox on Android:
No
Risk:
Low risk impact High risk likelihood
Permissions:
Size:
13.36MB
Email:
de*****@gmail.com
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Firefox Add-ons Store
Data ingested on:
2026-09-07
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Firefox add-on. Please use these information below to contact the Firefox add-on developer.
Developed by:
Sayandeep Majumdar
Firefox Add-ons Store
https://addons.mozilla.org/firefox/addon/toolzy-suite/
Email:
de*****@gmail.com
Website:
https://sayandeepmajumdar.github.io/tools/

Is Toolzy — Privacy-First Developer Tools & Utilities Safe?

Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk impact extension cannot do much harms, whereas a high risk impact extension can do a lot of damage like stealing your password, bypassing your security settings, and accessing your personal data. High risk impact extensions are not necessarily malicious. However, if they do turn malicious, they can be very harmful.

Toolzy — Privacy-First Developer Tools & Utilities requires very minimum permissions.

Risk impact analysis details
  • Medium Can alter new tab settings; fairly benign but with some capability to affect user experience.
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious. This is determined by the publisher and the Firefox add-on reputation on Firefox Add-ons Store, the amount of time the Firefox add-on has been around, and other signals about the Firefox add-on. Our algorithms are not perfect, and are subject to change as we discover new ways to detect malicious extensions. We recommend that you always exercise caution when installing a Firefox add-on.

Toolzy — Privacy-First Developer Tools & Utilities is recently added, and hasn't been around long enough for us to gather enough data to accurately assess its risk level.

Risk likelihood analysis details
  • High This extension was recently updated in the past month. New updates may not be stable or safe.
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  • High **** ********* *** *** **** ****** ********* ********** *** *** ** ****** ** *****
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