Add-ons   Development


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Extension development tools
developer-tools

Hi all, I’m excited to share some tools that community members have recently created to help with extension development. If you’ve built something that could be helpful to others, please let us know by replying to this …

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Introduction to Add-on Development
37 18815 April 10, 2020
About the Development category
1 2323 May 21, 2015
tabs.onUpdated: requestId?
2 43 September 24, 2020
When to Do a Whole Number Revision?
2 60 September 23, 2020
Scripts don't seem to run from extension
5 92 September 21, 2020
Firefox browser extension using tensorflow-javascript to run an in browser ML model
4 159 September 18, 2020
Blogger Update Breaks My App
2 115 September 18, 2020
I18n hierarchy rules: en->en_US, ja->ja_JP, fr->fr_CA?
2 127 September 17, 2020
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2 211 September 15, 2020
WebExtensions porting: access to cross-origin document.styleSheets[...].cssRules
8 1793 September 14, 2020
webRequest.getSecurityInfo: can't get self-signed/ToFU/"Exception" certificates
2 219 September 11, 2020
Question about a CSP error in an extension loaded through Mozilla add-ons
1 184 September 11, 2020
onHeadersReceived: call browserAction.set*({tabId: …})
7 208 September 9, 2020
webRequest.getSecurityInfo.certificates: PEM format? (or at least include Extensions)
2 193 September 9, 2020
Extensions compared to Firefox source code, if possible
5 392 September 8, 2020
Unable to upload update - "You cannot submit this type of add-on"
2 221 September 8, 2020
Mozilla Addon is not uploading
5 168 September 8, 2020
Is it possible to alter the URL that appears in extension pages?
3 191 September 6, 2020
Make addressbar text "Extension (Name Of The Extension)" shorter or hide
13 1439 September 5, 2020
Dont open *.mht format
12 7472 September 4, 2020
Passing objects from a local web page to the background script
1 213 August 31, 2020
AddonUrl to connect to my backend
learning
2 606 September 3, 2020
Adding scripts to extension pages
3 184 September 2, 2020
Identical .xpi files for Chrome and Firefox
6 194 September 2, 2020
Do extension pages share database allocation with the background page?
2 168 September 1, 2020
Where's the call stack when debugging a content script?
15 316 September 1, 2020
Sharing objects between content script and page script
1 165 August 31, 2020
Is there a browser preference that will permit extensions to fetch from local disk?
5 218 August 31, 2020
What is a cross-origin object error in a content script?
5 159 August 29, 2020