MobiDevTools 4.0 — a major release.

FIXED (thanks for the reviews!)
• Console: the page's console.log, errors and rejections are now captured on every site, from the first line after a reload.
• The console works on pages with a strict Content-Security-Policy (no more "call to eval() blocked by CSP").
• Network shows every request (documents, scripts, CSS, images, fetch/XHR), even those made before the panel was opened, and survives reloads.
• CSS/JS files no longer open blank; scrolling no longer triggers taps.
• The site's CSS can no longer break the panel (e.g. broken icons on Facebook).
• Settings and snippets are global, not per site.

NEW
• Pharos: Lighthouse-style audits — Performance, Accessibility, Best Practices, SEO — scored 0–100, with the elements to fix.
• React and Vue tabs: component trees, props, state, hooks, live editing.
• Chrome-style console: expandable objects, real autocomplete, top-level await, $0/$$/copy/inspect.
• Network: response bodies, payload, timings, copy as cURL/fetch, advanced filters, HAR.
• Elements: the real matched CSS rules, addEventListener listeners, CSS Grid/Flexbox overlays.
• Editable localStorage/sessionStorage/cookies, IndexedDB browser, download all page sources as .zip.
• Plugin API: developers can add their own tabs (see PLUGINS.md in the source).