Firefox Add-ons Scraper — Users, Ratings & Authors (AMO)

Scrape the Firefox Add-ons store (addons.mozilla.org): extensions and themes with name, daily active users, weekly downloads, rating and review count, author, category, tags, version and dates. Search, browse by category, or rank the top add-ons by users. Clean JSON/CSV/Excel in seconds. Built for add-on market intelligence, ASO and developer research.

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What This Actor Does

Search or browse the Firefox Add-ons store and get a clean record per add-on:

• Adoption — average daily users and weekly downloads
• Quality — rating average, rating count and text-review count
• Author — name(s), usernames and support email
• Classification — categories, tags, type (extension/theme), recommended flag
• Release — current version, created and last-updated dates
• Links — AMO listing, homepage, support URL, icon

Pick a search term, a category, or just rank the top add-ons by users.

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Why Use This

• Size the market. Daily users and downloads reveal real adoption across any niche.
• Track competitors. Monitor versions, ratings and user counts over time.
• ASO & keyword research. See which add-ons rank for a term and why.
• Developer leads. Author names, usernames and support emails for outreach.
• Open and free. Reads Mozilla's public API — no key, no login, no anti-bot.

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Quick Start

Run it in the console (no code)

1. Add search terms and/or categories, or leave empty for the top add-ons.
2. Choose a sort (users, rating, newest…) and type (extension/theme).
3. Set Max add-ons, click Start, export as JSON, CSV, Excel or HTML.

Rank a niche by users (Python)

from apify_client import ApifyClient

client = ApifyClient("YOUR_APIFY_TOKEN")

run = client.actor("YOUR_USERNAME/firefox-addons-scraper").call(run_input={
    "searchTerms": ["ad blocker"], "sort": "users", "maxItems": 300,
})
for a in client.dataset(run["defaultDatasetId"]).iterate_items():
    print(a["averageDailyUsers"], "·", a["name"], "·", a["ratingAverage"], "·", a["authorNames"])

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Input Parameters

Field	Type	Description
searchTerms	array	Keywords to search add-ons.
categories	array	AMO category slugs (e.g. privacy-security, shopping).
sort	string	users, rating, created, updated, hotness or downloads.
addonType	string	extension, statictheme, dictionary or language.
maxItems	integer	Max add-ons across all queries. 0 = no limit.
maxPagesPerQuery	integer	Pagination cap per query (50 per page).
proxyConfiguration	object	Apify Proxy. Datacenter is enough (public API).

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Output

{
  "id": 607454, "slug": "ublock-origin", "name": "uBlock Origin",
  "type": "extension", "summary": "Finally, an efficient blocker…",
  "averageDailyUsers": 11279732, "weeklyDownloads": 245676,
  "ratingAverage": 4.8, "ratingCount": 22186, "reviewCount": 5868,
  "authorNames": "Raymond Hill", "supportEmail": "",
  "categories": ["privacy-security"], "tags": ["ad blocker", "privacy"],
  "currentVersion": "1.75.0", "lastUpdated": "2026-10-06T16:31:46Z",
  "url": "https://addons.mozilla.org/firefox/addon/ublock-origin/"
}

About coverage: name, users, downloads, rating, author, version and dates are present for essentially every add-on. Support email is included where the developer publishes one.

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Use Cases

1. Add-on market intelligence — size niches by users/downloads and track leaders.
2. Competitive monitoring — watch versions, ratings and adoption over time.
3. ASO & keyword research — see what ranks for a term and how it's categorised.
4. Developer lead generation — author names, usernames and support emails.

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Tips

• sort: "users" ranks by adoption; hotness surfaces trending add-ons.
• Leave searches empty to pull the top add-ons overall.
• categories browse uses AMO slugs (e.g. privacy-security, tabs, shopping).
• weeklyDownloads + averageDailyUsers together show momentum vs installed base.
• Schedule it with Apify Schedules to track a niche over time.

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Frequently Asked Questions

Do I need an account or key? No. The addons.mozilla.org API is public and free — no login, key or anti-bot.

Can I get themes, not just extensions? Yes — set addonType to statictheme (or dictionary/language).

How do I find top add-ons without a search? Leave searchTerms and categories empty and keep sort: "users".

Does it include the Chrome Web Store? No — this covers Firefox Add-ons (AMO), which offers a public API.

What export formats are supported? JSON, CSV, Excel, HTML, or via API — plus Google Sheets, webhooks, Make and Zapier.

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Legal & Responsible Use

This Actor is an independent tool and is not affiliated with, endorsed by, or sponsored by Mozilla. It reads only public add-on data. Use it responsibly and in line with applicable terms and laws.