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View source code of Chrome extensions, Firefox addons or Opera extensions (crx/nex/xpi) from the Chrome web store and elsewhere. View the source code of any Chrome extension in the Chrome Web store without installing it. Features: - Button at the Chrome Web store - Download extension as zip file - View source - Configurable via context menu on button: Set one-click action via "primary action on click". - View source: - File name/type filter - Search in the file content (literal or regexp) - Automatic beautification (formatting) of code - Syntax highlighting - Show hashes (md5, sha1, sha256, sha384, sha512) of individual files - Image preview - View embedded zip files - View any zip file by URL or file chooser - View source of platform-specific extensions (such as Chrome OS-only extensions, or NaCl for a different architecture). - Permalink to file and search result within a zip or extension file. - Full support for incognito mode. - Outputs public key and extension ID to the console. Optional features (see options page): - View source of Opera 15+ extensions, Edge extensions, Firefox addons or Thunderbird add-ons. - "View extension source" contextmenu item on links to Chrome extensions - View source of Chrome extensions outside the webstore. The View source button becomes visible when you select a CRX file for download. Change log: - 1.2.3: Add "downloads" permission to make sure that the "Download" button always works as intended. - 1.2.4: Add extra parameters to the CRX URL to make sure that CRX files of extensions uploaded to the Chrome Web Store after July 2014 are correctly read. - 1.2.6: Sync options, use optionsV2, show numeric progress instead of dots, updated JSBeautifier, restore font size. - 1.2.7: Bugfixes (viewer height, checkbox filter). - 1.3: Support Firefox addons (also available as a Firefox addon!) Search within files Customize webstore download parameters View embedded zip files and any zip file - 1.3.1: Use correct URL for loading extension files. - 1.3.2: Bugfix to allow unusual extension URLs to be opened again. - 1.4: New syntax highlighter, improved search controls, improved word wrap. - 1.5: Calculate hashes, add link to Github project page, bugfix for case-sensitive search. - 1.6: Improved search highlighting & also search in beautified content. - 1.6.2: Configurable "primary action on click", open new tab next to current tab. - 1.6.4: Support the new CRX3 Chrome extension file format (#62). - 1.6.6: Permalink support, Firefox add-on finder. - 1.6.7: Fix broken extension due to bug with storage access and NativeCrxBindings. - 1.6.8: Support CRX3 file format from CWS; support some other AMO domains. - 1.6.9: Add option to add the context menu item to more links (#69), open new tabs via context menu next to current tab. - 1.6.10: Improve syntax highlighting (perf, highlighting of WebAssembly source), show sum of file sizes. - 1.6.11: Add "Extension ID" row at Analysis of manifest.json, improve CRX3 public key detection, improve zip fallback detection. - 1.6.12: Support source viewing of Edge and Thunderbird extensions, recognize CRX3 from Opera, update beautifier. - 1.6.13: Work around Chrome bug that broke the extension button (#120). - 1.7.0: Support new Chrome Web Store (#134), and migrate to Manifest Version 3.
view-current-source
View the source code of a page at its current state. View the source code of a page as it is at the moment you look at it. ➤ View the source code of dynamically generated pages. ➤ View the source code that is embedded in the page. ➤ View the source code the way you want. To view the page's source code, either: ➤ Right-click and select "view current source" from the context menu. ➤ Use the keyboard shortcut (CTRL+Shift+U). As with "View page source", you can search the source code with "CTRL+F" to find the code section that you're looking for.
CSS Used
Get all css rules used by the selected DOM and its descendants. One click to get all the css applied to the selected web element and its descendants. -- Recent Update -- 1. Migrated to Manifest V3. 2. Resources are read from local caches, making it much faster and solves the cross-origin issue. 3. Optimized style parsing in a more efficient way. 4. Dropped support for some outdated CSS, mostly -o- and -ms- prefixed properties. 5. Implemented a new UI powered by Svelte, with some visual tweaks. -- Known Limit -- 1. For CSS rules like ".wrap p{...}", if only " " is selected, the result ".wrap p{...}" will not apply to " ". Either change the rule to "p{...}" or add a ".wrap" parent in the final HTML. 2. CSS custom properties (variables) and all the style inherit related features are not supported currently.
Swoosh Cookie and Local Storage Specialist
Manage Cookies, Local Storage & Session Storage in one place. Powerful, intuitive, and real-time web dev toolkit. Swoosh Cookie and Local Storage Specialist is an all-in-one cookie editor and web storage manager designed for developers, testers, and power users. Manage Cookies, Local Storage, and Session Storage in one intuitive, fast, and powerful interface. Accelerate your web development workflow with real-time storage editing. View, search, create, delete, or batch modify cookies and storage data instantly — no refresh required. Key features: - Unified editor for Cookies, Local Storage, and Session Storage - Automatic real-time updates across tabs and domains - One-click URL encode/decode switch for clean data viewing - Friendly JSON viewer and formatter - Advanced cookie editor with attribute control (domain, path, expiration, secure, etc.) - Detachable full-window mode for focused debugging Why Swoosh? Unlike other cookie or storage extensions, Swoosh combines everything in a clean, developer-friendly UI that saves time and reduces friction in debugging and testing web apps. Privacy first: Swoosh works entirely offline. All operations happen locally in your browser — no data tracking, no analytics, no external servers. Perfect for developers, QA engineers, and anyone who needs a powerful yet simple tool to manage browser storage. Upgrade your workflow today — get Swoosh, the ultimate cookie and local storage specialist.
Quick source viewer
View current page sources: HTML + Javascript + CSS Displays HTML, Javascript and CSS sources of a page in a fast and compact way. Source code is syntax colorized and beautified for easy reading. Badge in the toolbar shows Javascript node counts. File size and cache header is displayed. Display onclick handlers with inline javascript. Look and feel can be modified with custom CSS. Selected urls can be hilighted in the list of source files.
