# Toolz.dev - Developer Tools > Search 160+ developer tools and run the common ones right here: Base64, JSON, URL encode, hash and case convert. Works offline, asks for one permission, and never sends what you paste anywhere. Canonical page: [https://chrome-stats.com/d/toolz-dev-developer-tools?hl=fr](https://chrome-stats.com/d/toolz-dev-developer-tools?hl=fr) ## Overview - **ID:** `toolz-dev-developer-tools` - **Platform:** Firefox - **Type:** Firefox add-on - **Status:** Available - **Publisher:** Liton Arefin - **Category:** web-development - **Daily users:** 1 - **Version:** 1.0.0 - **Last updated:** 2026-08-26 - **First published:** 2026-08-23 - **Size:** 70 KB - **Data as of:** 2026-09-06 - **Store listing:** [Firefox Add-ons Store](https://addons.mozilla.org/firefox/addon/toolz-dev-developer-tools/) - **Website:** [https://toolz.dev](https://toolz.dev/) - **Privacy policy:** [https://addons.mozilla.org/firefox/addon/toolz-dev-developer-tools/privacy/](https://addons.mozilla.org/firefox/addon/toolz-dev-developer-tools/privacy/) ## Description Every tool on toolz.dev, one keystroke from wherever you are. Press Alt+T, type three letters, hit Enter. No aiming at a toolbar icon, no tab full of bookmarks, no remembering which site had the JSON formatter. RUNS IN THE POPUP, OFFLINE Five tools work without opening a tab and without a network connection: • Base64 encode and decode, Unicode-safe • JSON format and minify, with the parse error if there is one • URL encode and decode, both encodeURIComponent and encodeURI • SHA-256, SHA-384 and SHA-512 hashing • Case conversion: camelCase, PascalCase, snake_case, kebab-case, CONSTANT Whatever you paste is transformed in the popup on your own machine. It is never uploaded, never logged, and never leaves the browser. FINDS THE REST Search the whole catalogue by name, keyword or category, or browse 28 categories: PDF, image, data, CSS, SEO, security, converters, calculators and more. Favorite the ones you use and they stay at the top. Type "tz" in the address bar to search without opening the popup at all. WHAT IT ASKS FOR One permission: storage, to remember your favorites on this device. No account. No host permissions, so it cannot read or change the pages you visit. No content scripts. No analytics, no tracking, no profile. Your favorites are stored on your device and are never sent anywhere. Free, no signup, no account: https://toolz.dev ## Rankings - #102,856 — Overall - #59 — developer tools - #100 — developer ## Permissions and access ### Permissions - `storage` ## Safety - **Risk impact:** Very low risk impact - **Risk likelihood:** High risk likelihood ### Analysis details - Allows usage of omnibox input, negligible risk as it pertains largely to user input enhancements. - This extension was recently updated in the past month. New updates may not be stable or safe. > Some risk analysis details are omitted from this free response. [Upgrade to view the full analysis](https://chrome-stats.com/pricing). ## Similar extensions and apps - [99Tools: Web Developer Toolkit](https://chrome-stats.com/d/99tools-web-developer-toolkit) - [Toolzy — Privacy-First Developer Tools & Utilities](https://chrome-stats.com/d/toolzy-suite) - [Dev Toolkit — 440+ Developer Tools](https://chrome-stats.com/d/dev-toolkit-440-devtools) — 1 users - [StackOnlineTools: Your ultimate all-in-one toolbox](https://chrome-stats.com/d/stack-online-tools) — 1 users - [Dev Toolbox](https://chrome-stats.com/d/dev-toolbox) — 9 users, 5.00 / 5 - [DTB - Daily Tool Box](https://chrome-stats.com/d/ddtb) — 1 users, 5.00 / 5 - [NexusLabs DevKit — 8+ Developer Tools](https://chrome-stats.com/d/nexuslabs-devkit-dev-tools) - [xDevTools - Developer Utilities](https://chrome-stats.com/d/xdevtools-developer-utilities) — 23 users - [IO Tools - Developer Kit](https://chrome-stats.com/d/iotools-quick-access) — 7 users, 5.00 / 5 - [supertools-browser-toolkit](https://chrome-stats.com/d/supertools-browser-toolkit) — 2 users - [Online Tools by 10015.io](https://chrome-stats.com/d/online-tools-by-10015-io) — 910 users, 4.67 / 5 - [ZeroWebTools Companion](https://chrome-stats.com/d/zerowebtools-dev) --- Source: [Chrome-Stats](https://chrome-stats.com/d/toolz-dev-developer-tools?hl=fr)