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MobiDevTools adds a full DevTools panel to any web page in Firefox for Android, and it works just as well on desktop. There is no computer, cable or adb involved. The panels are Console, Elements, Network, Sources, Performance, Application and Device. Pharos runs Lighthouse-style audits on the phone: Performance, Accessibility, Best Practices and SEO. There are also inspectors for React and Preact, Vue and Angular, plus a State tab for Redux, Redux Toolkit, Zustand and NgRx with time travel. The console captures the page from the first line, even on strict Content-Security-Policy sites. It collects no data and makes no remote calls. A plugin API lets you add your own panels. MIT licence.
Features
- Console with object inspector, autocomplete, top-level await, $0/$$/copy()
- Elements: live DOM, real matched CSS rules, box model, grid/flex overlays
- Network: every request, headers, payload, response, cURL/fetch, HAR
- Sources: pretty-print, find, snippets, download all as .zip
- Pharos: Lighthouse-style audits run on the device
- React / Preact inspector: props, state, hooks, live editing
- Vue 2/3 and Angular inspectors
- State: Redux, RTK, Zustand, NgRx actions, diff, time travel
- Application: editable storage, cookies, IndexedDB, caches
- Performance: FPS, Core Web Vitals, navigation timing
- Touch-optimised for Firefox for Android; works on desktop
- Plugin API for custom panels; no data collection, no eval
Project Samples
Categories
Browser Extensions and PluginsLicense
MIT LicenseOther Useful Business Software
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User Reviews
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So... Probably you invested a lot of time into this, but even after trying for several weeks, I do not understand how to use the new interface, sorry. I do not understand which icons mean what, as they have no description and no universal meaning. So I try to tap on them, trying to find the functionality I was looking for, but it seems to have disappeared. It seems like the whole functionality one could wish from a devtools extension has disappeared or should be here but isn't working. Very sad.
