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Search 160+ developer tools and run the common ones right here: Base64, JSON, URL encode, hash, case convert. 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. Open source, and the tools are free with no signup: https://toolz.dev
Aug 24, 2026
rating_count is the Chrome Web Store ratings count, not a written-review count.
Media assets
Screenshots and videos on the listing.
Has promo video
Whether the listing includes at least one video.
Languages
Declared language locales.
Developer website
Listing exposes a developer website URL.
Contact email
Listing exposes a contact email.
Keyword in name
Case-insensitive substring match in the name.
Keyword in description
Case-insensitive substring match in the description.
Keyword occurrences in description
Count of case-insensitive occurrences in the description.
Category user-count percentile
Share of same-category extensions with fewer users (null if unknown).
These are transparent listing completeness / keyword signals, not a prediction of Chrome Web Store search ranking.