If you use the Chrome command-line option for loading an unpacked extension, check out the web-ext tool which automates temporary installation in Firefox for development.

Create an account on then submit your add-on for signing and distribution.

Package your extension, manually or using the web-ext tool.

If you have any problems, contact us on the dev-addons mailing list or Add-ons channel on Matrix.

Install your extension in Firefox by using about:debugging or the web-ext tool (similar to Chrome’s command-line tools).

If you're using features or APIs that aren't supported in Firefox, you might not be able to port your extension. Mozilla provides a service that can help to automate this step:.

Review your use of manifest.json features and Chrome extension APIs against the Chrome incompatibilities reference.

The process of porting an extension from Chrome or Opera is, therefore, relatively straightforward: In those cases, the API documentation page states that support is provided only in the browser namespace. The only APIs that aren't supported in the chrome namespace are those that are intentionally incompatible with Chrome. Almost all of the WebExtension APIs provide support for callback functions under the chrome namespace, the same as Chrome. Extensions written for these browsers will, in most cases, run in Firefox with just a few changes. The WebExtension APIs is therefore, to a large extent, code-compatible with the extension API supported by Google Chrome and Opera. The browser extension APIs are designed to promote cross-browser compatibility among extensions.

Removing your extension from distribution.

Will I ever be able to sell through AMO?.

Use plain language in any privacy policy or license agreement.

Select the right platforms and versions.

The add-on description can be longer, but not too long.

Focus on key features in your screenshots.

Make sure your summary is just long enough.

What does review rejection mean to users?.

Communicating third-party library links to reviewers.

Themes are made up of skins, with one skin per. If you use Safari, Firefox, or another browser, check its support site for.

How to determine the third-party library link The simple way to make Firefox look like the desktop is to build a theme that looks exactly like the desktop. When you use a browser, like Chrome, it saves some information from websites.

When must links for third-party libraries be provided?.

The Firefox 57 release back in November came with a huge set of changes in tow. Firefox UserChrome.css Firefox 57 with the Photon UI and the Ambiance GTK theme.

Blocking Other Types of Third Party Software In fact, with a bit of custom CSS you can make Firefox look like Epiphany (aka GNOME Web), the core browser that ships with the GNOME desktop environment.

Distribution, certificates, & review process

Data Disclosure, Collection and Management.

How to make firefox look like chrome