Renamed the extension to "Source Code Viewer — HTML/CSS/JS/JSON/XML" and reworded the store summary across all locales to mention the supported languages (HTML, CSS, JavaScript, JSON, XML) and formatting, improving discoverability. No functional changes.

v1.6.0 — New highlighting engine & many more themes

• 🎨 Rebuilt on CodeMirror 6: smoother, more accurate syntax highlighting for HTML, CSS, JavaScript, JSON, and XML.
• 🌈 45 themes to choose from (light & dark) — up from 8.
• 🧩 Code folding: collapse and expand blocks of code.
• ⚡ Themes and language grammars now load on demand, keeping the viewer lean.

ℹ Because the theme system changed, your previously selected theme resets to the default — just pick your favorite again from the toolbar.

• In-Place Auto-Open: Navigating directly to a raw .css/.js/.json/.xml URL now renders the formatted viewer in place — as a full-viewport iframe embedding the viewer page over the original page — instead of redirecting the tab. The address bar keeps the original URL and the browser back button works in a single hop. (Firefox's built-in JSON viewer, when enabled via devtools.jsonview.enabled, still intercepts direct .json navigations before the extension can run.)
• JSON Support: Added JSON syntax highlighting and formatting (with a safe fallback for invalid JSON), plus content-type-aware file detection — the response's real MIME type now takes precedence over the URL extension (handles extensionless URLs such as fonts.googleapis.com/css2?…).
• Type-Aware Link Routing: Links in the viewer are now routed by the target's type — image URLs (.png, .svg, …) open in the browser to render natively, while source files reopen in the code viewer. Clickable URLs now also cover CSS url(…) values and the HTML content attribute (e.g. og:image), the latter only when it holds an absolute URL.

• Theme Stylesheet URL: Theme stylesheets are now resolved via browser.runtime.getURL, so they load correctly regardless of the page hosting the viewer.
• Line-Number Alignment: Line numbers no longer misalign when word wrap is on. The viewer now waits for fonts (document.fonts.ready) and a frame (requestAnimationFrame) before highlighting, and recomputes line-number row heights whenever word wrap is toggled.

Update to version 1.2.0:
- Restricted Domain Handling: Automatic detection of pages where extensions are prohibited (e.g., Chrome Web Store, Firefox Add-ons).
- Native Fallback System: Added a button to switch to the browser's native source viewer on protected pages.
- UX Improvements: Added a manual URL copy option if automatic navigation is blocked.
- Code Refactoring: Centralized detection logic into a shared module.
- Full Localization: Added comprehensive French and English support for error messages and UI elements.