Get add-on id of extensions in Firefox

Question

I want to open extensions in browser tab as a normal html page so that I can automate it using selenium WebDriver. In firefox this can be done using link like this - moz-extension://f1b30486-cd88-4319-bbb5-d5e387103414/popup.html.

But the problem is that I am not finding a way in Firefox by which I can locate the id for all extensions**. The id used above is obtained when the extension is installed and a page with url moz-extension://f1b30486-cd88-4319-bbb5-d5e387103414/congratulations.html is loaded like a welcome page.

Is there any way in Firefox to get the add-on id or get urls like above for all extensions.

Sikko

Can you access about:debugging? – Streak

Yes I can ... Did not find it there . – Sikko

Really? Did you reinstall the extension maybe? The UUID after moz-extension:// should match one of the extensions "Internal UUID" entries. – Streak

Answer 1

Open about:memory. Click "measure" in Show memory reports. In the Main Process section, scroll down to Other Measurements. There you will find the installed (active) extensions with their names and their ids displayed as baseURL=moz-extension://[random-ids].

This method works for both Firefox and Firefox for Android. Note that only enabled extensions are shown.

Conglomerate

Doesn't seem to be there ... now ? – Skinflint

@Skinflint You have to click the "Measure" button first, then the list shows up containing "Other Measurements" and the extensions. – Schistosome

Answer 2

I tried the other two and they both worked but I really had to search to find which extension was which

I found that using about:debugging was very clear as to which extension was which I̶ ̶a̶l̶s̶o̶ ̶h̶a̶d̶ ̶t̶o̶ ̶c̶l̶i̶c̶k̶ ̶̶T̶h̶i̶s̶ ̶F̶i̶r̶e̶f̶o̶x̶̶ ̶a̶f̶t̶e̶r̶ ̶t̶h̶e̶ ̶p̶a̶g̶e̶ ̶l̶o̶a̶d̶e̶d̶

Just go to about:debugging#/runtime/this-firefoxand it will give you the following

• Extension Picture next to Extension Name
• Extension ID
• Internal UUID
• Manifest URL

Matthei

Or just about:debugging#/runtime/this-firefox – Sihunn

Happy to save the clicks, IMO this is definitely the preferred answer, thanks for sharing your finding. – Sihunn

Answer 3

Just open about:config and then look at this: extensions.webextensions.uuids

Theresiatheresina

this the better answer – Spoilsman