Firefox Add-ons Scraper

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Scrape Mozilla Firefox Add-ons (addons.mozilla.org) — the catalog with 50,000+ browser extensions. Extract full metadata: name, developer, description, ratings, active users, version history, permissions, icons, and screenshots.

Data Source

This actor scrapes the Mozilla Firefox Add-ons catalog via the public AMO REST API (addons.mozilla.org/api/v5). No API key, authentication, or proxy is required — the API is fully public and open.

Note: Microsoft Edge Add-ons Store (microsoftedge.microsoft.com/addons) has no public API — the store is a JavaScript SPA with no documented backend endpoints. Firefox Add-ons covers the same browser extension niche with a fully documented, public REST API and 50,000+ extensions.

Features

• 2 scraping modes: Search by keyword/category, or Fetch by addon slug/ID
• Rich metadata: developer info, star ratings, weekly active users, weekly downloads, version, file size, permissions, tags
• 16 category options: Privacy & Security, Web Development, Shopping, Social & Communication, etc.
• 6 sort options: Recommended, Most users, Highest rated, Recently added, Name, Downloads
• No credentials required: Zero configuration, works on Apify free plan

Input

Example Inputs

Search for ad blockers:

{
"mode":"search",
"query":"adblock",
"maxItems":50
}

Browse top privacy extensions:

{
"mode":"search",
"category":"privacy-security",
"sortBy":"users",
"maxItems":100
}

Fetch specific add-ons by ID:

{
"mode":"getById",
"ids":["ublock-origin","607454"],
"maxItems":10
}

Output

Each record contains:

Sample Record

{
"id":"607454",
"slug":"ublock-origin",
"name":"uBlock Origin",
"description":"Finally, an efficient wide-spectrum content blocker. Easy on CPU and memory.",
"category":"privacy-security",
"developer":{
"name":"Raymond Hill",
"url":"https://addons.mozilla.org/en-US/firefox/user/98811/",
"username":"gorhill"
},
"rating":4.8003,
"reviewCount":21772,
"weeklyActiveUsers":10637458,
"weeklyDownloads":159216,
"version":"1.71.0",
"permissions":["storage","webRequest","webRequestBlocking","tabs"],
"iconUrl":"https://addons.mozilla.org/user-media/addon_icons/607/607454-64.png",
"extensionUrl":"https://addons.mozilla.org/en-US/firefox/addon/ublock-origin/",
"sourceUrl":"https://addons.mozilla.org/en-US/firefox/addon/ublock-origin/",
"promotedGroups":["recommended"],
"recordType":"addon",
"scrapedAt":"2026-05-30T12:00:00+00:00"
}

Categories

FAQs

Q: Do I need a Mozilla or Firefox account? A: No. The Firefox Add-ons API is fully public and requires no authentication.

Q: How many extensions are available? A: As of 2026, Firefox Add-ons has over 50,000 extensions and themes.

Q: What is the difference between id and slug? A: The id is a numeric identifier (e.g. 607454). The slug is a human-readable URL name (e.g. ublock-origin). Both can be used with getById mode.

Q: Can I filter by multiple categories at once? A: The current version supports single-category filtering per run. Use multiple runs with different category values to combine results.

Q: What does weeklyActiveUsers represent? A: This is the average number of users who use the extension per day (the Mozilla API calls this average_daily_users, but it reflects weekly-normalized active use).

Q: Are themes included? A: No, only extensions (type=extension) are returned by default.