Scraper for Firefox Add-ons — Extensions, Themes & Reviews

Export Firefox extensions, themes, ratings, reviews and version history from Mozilla Add-ons. 600k+ catalog, no key/login/proxy. Not affiliated with or endorsed by Mozilla.

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What does the Scraper for Firefox Add Scraper do?

This Actor turns Scraper for Firefox Add into a structured dataset you can actually work with. You give it a search, it walks the result pages, and it writes one clean row per record into your dataset — ready to export as JSON, CSV or Excel, or to pull straight from the Apify API.

It runs on plain HTTP with no browser and no login, which keeps it fast and cheap, and it works the same on a free account as on a paid one. Every field documented below came from a real verification run of this Actor, so what you read here is what you get.

The current build returns 55 populated fields per record, of which 45 are present on virtually every row.

Who is it for?

• Analysts who need Scraper for Firefox Add data as a spreadsheet instead of a browser tab.
• Operations and research teams tracking how Scraper for Firefox Add listings change over time.
• Developers wiring a live data feed into an internal tool or database.
• Growth and sales teams building prospect and market lists from public data.
• AI teams assembling structured training or grounding data.

Use cases

• Export a full Scraper for Firefox Add search into a spreadsheet for analysis.
• Track how prices, volumes or availability move week over week by scheduling the run.
• Feed a dashboard or internal database with a repeatable, structured source.
• Build a market map by running several searches in one job.
• Enrich an existing list by matching on the identifiers in the output.

Why use this Scraper for Firefox Add Scraper?

• 🔑 No API key and no login — nothing to authenticate, nothing to expire.
• 📦 55 verified fields — every column below was confirmed against live output.
• 📄 Real pagination — it walks the result set instead of returning the first screen.
• 🎯 Bounded runs — caps in the input stop the job exactly where you want, so the bill is predictable.
• 💸 Tiered pay-per-result — you pay per row, and higher Apify plans pay less per row.
• 📊 Export anywhere — JSON, CSV, Excel, HTML, the API, or any Apify integration.

What data can you extract?

One row per record. These columns come from a live run, with the share of rows that carried a value:

Field	Type	Typically filled	Description
addonId	number	100%	Addon id
addonType	string	100%	Addon type
authorNames	array	100%	Author names
authors	array	100%	Authors
averageDailyUsers	number	100%	Average daily users
averageRating	number	100%	Average rating
bayesianAverageRating	number	100%	Bayesian average rating
categories	array	100%	Categories
createdAt	string	100%	Created at
currentVersion	number	100%	Current version
currentVersionCreatedAt	number	100%	Current version created at
currentVersionId	number	100%	Current version id
currentVersionReviewedAt	number	100%	Current version reviewed at
description	string	97%	Description
downloadUrl	string	100%	Download url
fileHash	string	100%	File hash
fileSizeBytes	number	100%	File size bytes
firefoxMaxVersion	string	100%	Firefox max version
firefoxMinVersion	string	100%	Firefox min version
guid	string	100%	Guid
hasEula	boolean	100%	Has eula
hasPrivacyPolicy	boolean	100%	Has privacy policy
iconUrl	string	100%	Icon url
isDisabled	boolean	100%	Is disabled
isExperimental	boolean	100%	Is experimental
isRecommended	boolean	100%	Is recommended
licenseName	string	100%	License name
licenseSlug	string	90%	License slug
licenseUrl	string	90%	License url
name	string	100%	Name
permissions	array	100%	Permissions
previewImageUrls	array	93%	Preview image urls
query	string	100%	Query
ratingCount	number	100%	Rating count
recordType	string	100%	Record type
requiresPayment	boolean	100%	Requires payment
scrapedAt	string	100%	Scraped at
slug	string	100%	Slug
sourceEngine	string	100%	Source engine
status	string	100%	Status
summary	string	100%	Summary
textReviewCount	number	100%	Text review count
updatedAt	string	100%	Updated at
url	string	100%	Url
weeklyDownloads	number	100%	Weekly downloads
androidMaxVersion	string	45%	Android max version
androidMinVersion	string	45%	Android min version
contributionUrl	string	35%	Contribution url
dataCollectionPermissions	array	27%	Data collection permissions
homepageUrl	string	77%	Homepage url
hostPermissions	array	23%	Host permissions
optionalPermissions	array	23%	Optional permissions
promotedCategories	array	25%	Promoted categories
supportUrl	string	80%	Support url
tags	array	53%	Tags

Fields below 90% are genuinely optional at the source — Scraper for Firefox Add does not publish them for every record. An empty value means the source did not show it, not that extraction failed.

Output example

{
  "addonId": 607454,
  "addonType": "extension",
  "authorNames": [
    "Raymond Hill"
  ],
  "authors": [
    {
      "id": 11423598,
      "name": "Raymond Hill",
      "username": "gorhill",
      "url": "https://addons.mozilla.org/en-US/firefox/user/11423598/"
    }
  ],
  "averageDailyUsers": 10995231,
  "averageRating": 4.8005,
  "bayesianAverageRating": 4.800186588358292,
  "categories": [
    "privacy-security"
  ],
  "createdAt": "2015-04-25T07:26:22Z",
  "currentVersion": "1.74.0",
  "currentVersionCreatedAt": "2026-08-25T13:43:56Z",
  "currentVersionId": 6437252,
  "currentVersionReviewedAt": "2026-08-25T13:46:35Z",
  "description": "uBlock Origin is not an \"ad blocker\", it's a wide-spectrum content blocker with CPU and memory efficiency as a primary feature.\nOut of the box, uBO blocks ads, trackers, coin miners, popups, etc. through the following lists of filters, enabled by default:\nEasyList (ads)\nEasyPrivacy (tracking)\nPeter Lowe’s Ad server list (ads and tracking)\nOnline Malicious URL Blocklist\nuBO's own lists\nMore lists are available for you to select if you wish:\nEasyList Cookie\nFanboy Annoyances\nAdGuard Annoyances\nDan Pollock’s hosts file\nAnd many others\nAdditionally, you can point-and-click to block JavaScript locally or globally, create your own global or local rules to override entries from filter lists, and many more advanced features.\nFree.\nOpen source with public license (GPLv3)\nFor users by users.\nIf ever you really do want to contribute something, think about the people working hard to maintain the filter lists you are using, which were made available to use by all for free.\nDocumentation \nRelease notes \nCommunity support @ Reddit \nContributors @ GitHub \nContributors @ Crowdin",
  "downloadUrl": "https://addons.mozilla.org/firefox/downloads/file/4981431/ublock_origin-1.74.0.xpi",
  "fileHash": "sha256:175756d74468c9ba45863f7fc333d3be670f82d5b066314e915814dd547d1652",
  "fileSizeBytes": 4617614,
  "firefoxMaxVersion": "*",
  "firefoxMinVersion": "115.0",
  "guid": "uBlock0@raymondhill.net",
  "hasEula": false,
  "hasPrivacyPolicy": true
}

How to use

1. Open the Actor and fill in the search fields — the defaults below are a working example.
2. Set the result cap so the run stops where you want it.
3. Click Start, then export from the Output tab or pull the dataset through the API.

{
  "dataType": "ADDONS",
  "searchQueries": [
    "ad blocker"
  ],
  "addonType": "extension",
  "sortBy": "users",
  "maxResults": 100
}

Input parameters

Parameter	Type	Default	Description
dataType	string	ADDONS	Add-ons outputs extension/theme records.
searchQueries	array	–	Keywords to search in Mozilla Add-ons.
startUrls	array	–	Mozilla Add-ons URLs to fetch directly.
addonSlugs	array	–	Alternative to URLs, for example ublock-origin.
addonType	string	extension	Limit catalog searches to extensions, themes, dictionaries or language packs.
sortBy	string	users	Mozilla's server-side result ordering.
maxResults	integer	100	Global dataset row cap across all queries and source add-ons.
sourceAddonLimit	integer	10	For Reviews or Versions mode, maximum number of add-ons discovered from searches before child records are coll.
maxItemsPerAddon	integer	100	Per-add-on cap in Reviews or Versions mode.
locale	string	en-US	Preferred locale used to flatten Mozilla's localized names, summaries, descriptions, licenses and release note.
minAverageDailyUsers	integer	0	Client-side quality filter for catalog results.
minAverageRating	number	0	Client-side rating filter from 0 to 5.
includeRecentReviews	boolean	false	ADDONS mode only.
maxRecentReviews	integer	5	Maximum recent reviews embedded in each add-on row when enrichment is enabled.
includeRecentVersions	boolean	false	ADDONS mode only.
maxRecentVersions	integer	5	Maximum recent versions embedded in each add-on row when enrichment is enabled.
includeAllLocales	boolean	false	Add Mozilla's complete name, summary and description locale maps to ADDONS rows.
includeRawRecord	boolean	false	Add the original Mozilla API object to each dataset row for advanced use.

Tips for best results

• Broad searches return the deepest result sets; very narrow ones run out after a page or two.
• Use the result cap rather than the page cap when you want a predictable bill.
• Schedule the same input daily or weekly to build a history instead of a one-off snapshot.
• Lower the concurrency if you see retries — the source rate-limits aggressive crawling.
• Run several searches in one job instead of one search with a huge page count.
• Empty optional fields are normal; filter on the columns that matter to you after export.
• Deduplicate on the identifier column if you merge several runs together.
• Keep the proxy setting on the default unless the source blocks your region.

Integrations

Push results straight into Google Sheets, Slack, Zapier, Make, Airtable or any Webhook. You can also schedule the Actor and have each run append to the same dataset, which is how you turn a single export into a time series.

API usage

Replace <YOUR_TOKEN> with your Apify API token.

cURL

curl -X POST "https://api.apify.com/v2/acts/logiover~firefox-addons-scraper/run-sync-get-dataset-items?token=<YOUR_TOKEN>" \
  -H "Content-Type: application/json" \
  -d '{"dataType": "ADDONS", "searchQueries": ["ad blocker"], "addonType": "extension", "sortBy": "users", "maxResults": 100}'

Python

from apify_client import ApifyClient

client = ApifyClient('<YOUR_TOKEN>')
run = client.actor('logiover/firefox-addons-scraper').call(run_input={"dataType": "ADDONS", "searchQueries": ["ad blocker"], "addonType": "extension", "sortBy": "users", "maxResults": 100})
for item in client.dataset(run['defaultDatasetId']).iterate_items():
    print(item)

Node.js

import { ApifyClient } from 'apify-client';

const client = new ApifyClient({ token: '<YOUR_TOKEN>' });
const run = await client.actor('logiover/firefox-addons-scraper').call({"dataType": "ADDONS", "searchQueries": ["ad blocker"], "addonType": "extension", "sortBy": "users", "maxResults": 100});
const { items } = await client.dataset(run.defaultDatasetId).listItems();
console.log(items);

Use with AI agents (MCP)

This Actor is reachable through the Apify MCP server, so an AI agent can call it as a tool. Point the agent at https://mcp.apify.com and ask it something like "pull the first 200 results from Scraper for Firefox Add and summarise them" — it receives the same structured rows you would get from the UI.

FAQ

Do I need a Scraper for Firefox Add account or API key?

No. The Actor reads publicly available pages only. There is nothing to authenticate and no credentials to rotate.

Does it work on the free plan?

Yes. Every feature is available on a free Apify account — nothing is gated behind a paid tier. Pricing is per result, and higher plans simply pay less per row.

How many results can I get in one run?

As many as the search exposes. Raise the page and result caps together; the run stops at whichever limit it reaches first.

Why did I get fewer rows than I asked for?

The search ran out of records. That is normal for narrow queries — broaden the search or add more searches to one run.

Why are some fields empty?

Scraper for Firefox Add does not publish every attribute for every record. The table above shows how often each field is filled in practice.

What export formats are supported?

JSON, CSV, Excel, HTML and RSS from the Output tab, plus the Apify API and any integration you connect.

How fast is it?

It is pure HTTP with no browser, so a page of results typically takes a second or two.

Can I schedule it?

Yes. Use the Apify scheduler to run it on any interval and append each run to the same dataset.

Does it use a proxy?

It routes through Apify Proxy by default. You can switch groups or supply your own proxies in the input.

Is the output schema stable?

Yes. Field names and types are fixed, so downstream pipelines will not break between runs.

How often is the data refreshed?

Every run reads the live source. There is no cache, so the data is as current as the website itself.

What if the site changes its layout?

Open an issue on the Issues tab and it gets fixed — the Actor is actively maintained.

Is it legal?

This Actor reads only publicly available pages on Scraper for Firefox Add — the same content any visitor sees without logging in. It does not bypass authentication and does not collect private data. You remain responsible for how you use the output: respect the source's terms of service, applicable copyright, and data-protection law such as GDPR where personal data is involved.

Related scrapers

Browse the full collection at apify.com/logiover — Developer Tools tools and more.