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Get started with Firefox extension development
Development

Extensions provide a simple and powerful way to personalize your browsing experience. If you know JavaScript, CSS, and HTML, you can build your own. If you are brand-new to add-on development, you can get started by che…

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Add Extensions
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Development
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Development
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Register as a Mozillian
UK
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Developer Tools
feedback
7 1835 December 16, 2024
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Getting request was throttled , please try again later in 26175 seconds
addons.mozilla.org
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