# Chrome Web Store Scraper: Extensions on Chrome, Firefox & Edge (`latamdatatools/browser-extension-store-scraper`) Actor

Get Chrome Web Store, Firefox Add-ons and Microsoft Edge Add-ons extension details in one clean schema: users, rating, version, last update, category, developer, permissions and a permission risk level. Track changes between runs. robots.txt compliant.

- **URL**: https://apify.com/latamdatatools/browser-extension-store-scraper.md
- **Developed by:** [Julian Genuario](https://apify.com/latamdatatools) (community)
- **Categories:** Developer tools, Marketing, Lead generation
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $3.00 / 1,000 extensions

This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events.

Learn more: https://docs.apify.com/actors/running/actors-in-store.md#pay-per-event

## What's an Apify Actor?

An Actor is a serverless cloud program that runs on the Apify platform. It has two run modes.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.

Apify vocabulary and the platform model are defined once, in the agent quickstart at https://apify.com/agents.md.

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.

Do not guess an integration path. Every one of them is in the agent quickstart at https://apify.com/agents.md: the Apify MCP server, Agent Skills with the Apify CLI, the JavaScript and Python clients, the REST API, and the account-free path for an agent with no human to sign in. It also carries the rule on stating cost before the first paid run.

For examples already wired to this Actor's own input schema, see the [API](#api) section below.

Each client library has reference documentation the quickstart does not restate: [JavaScript/TypeScript](https://docs.apify.com/api/client/js/docs.md) (`npm install apify-client`) and [Python](https://docs.apify.com/api/client/python/docs.md) (`pip install apify-client`).

# README

## Chrome Web Store Scraper: Extensions on Chrome, Firefox & Edge

Get browser extension data from the **Chrome Web Store**, **Firefox Add-ons (AMO)** and **Microsoft Edge Add-ons** in **one clean schema**: name, developer, users, rating, rating count, version, last update, category, size, manifest version and the full **permission list with a risk level**. Run it on a schedule and it tells you what changed since the last run: users gained or lost, new version, permissions added or removed.

No login, no browser, no API key. Firefox data comes from Mozilla's official public API, Edge from the store's own JSON, and Chrome from the public listing pages. The Actor **obeys each store's robots.txt**.

### What does Chrome Web Store Scraper do?

Chrome Web Store Scraper collects browser extension data from the Chrome Web Store, Firefox Add-ons (AMO) and Microsoft Edge Add-ons in one clean schema: users, rating, rating count, version, last update, category, developer, website, permissions and a permission risk level. Use it for extension market research, competitor tracking and security reviews of installed extensions.

### How to use Chrome Web Store Scraper

1. Click **Try for free** on this page (a free Apify account is enough to start).
2. Fill in the input (see the examples below) or keep the prefilled example.
3. Click **Start** and wait for the run to finish.
4. Download the results from the **Output** tab as JSON, CSV, Excel or HTML, or read them with the Apify API.
5. Optional: create a **Schedule** to run it daily or weekly, and connect a webhook or an integration (Make, Zapier, n8n, Slack).

### What you can use it for

- **Competitor monitoring**: track users, ratings and release cadence of the extensions in your niche across all three stores.
- **Security and compliance reviews**: list the permissions of the extensions your company allows, flag anything that can read every website (`broadHostAccess`) or uses sensitive APIs, and get alerted when an update adds new permissions.
- **Market research**: find the biggest extensions in a category (Chrome and Edge category pages, Firefox categories and keyword search) and compare stores.
- **Partnerships and lead generation**: developer name, website, support page and privacy policy of each extension (developer email optional, off by default).
- **Manifest V2 to V3 tracking**: `manifestVersion` for Chrome and Edge.

### Input

| Field | Default | Description |
|---|---|---|
| `extensionUrls` | (see prefill) | Extension pages, category pages, or short IDs: `chrome:<id>`, `edge:<id>`, `firefox:<slug or GUID>`. |
| `firefoxSearchTerms` | none | Keyword search via the official Firefox Add-ons API. |
| `firefoxCategory` | none | Firefox category slug (e.g. `privacy-security`); filters the search, or lists the category if there are no terms. |
| `firefoxSort` | `users` | users, rating, updated, created, hotness, downloads, relevance. |
| `maxItemsPerSource` | 50 | Max extensions per category page or search term. |
| `includeDescription` | false | Adds the long description. |
| `includeDeveloperEmail` | false | Adds the support email the store publishes (Chrome, Firefox). |
| `trackChanges` | false | Adds a `changes` object comparing with the previous run (stored in the named key-value store `extension-store-history`). |
| `language` | `en-US` | Language / market of names and descriptions. |
| `maxConcurrency` / `maxRequestsPerMinute` / `delayBetweenRequestsSecs` | 2 / 30 per store / 1 | Politeness limits. |

#### Example: a competitor list across stores, with change tracking

```json
{
    "extensionUrls": [
        "https://chromewebstore.google.com/detail/ublock-origin-lite/ddkjiahejlhfcafbddmgiahcphecmpfh",
        "https://addons.mozilla.org/en-US/firefox/addon/ublock-origin/",
        "edge:odfafepnkmbhccpbejgmiehpchacaeak"
    ],
    "trackChanges": true
}
```

#### Example: market scan

```json
{
    "extensionUrls": [
        "https://chromewebstore.google.com/category/extensions/productivity/workflow",
        "https://microsoftedge.microsoft.com/addons/category/Productivity"
    ],
    "firefoxSearchTerms": ["password manager", "ai assistant"],
    "maxItemsPerSource": 100
}
```

### Output

One item per extension and store. Every item has exactly the same keys, so CSV / Excel exports line up across stores.

```json
{
    "store": "chrome",
    "extensionId": "ddkjiahejlhfcafbddmgiahcphecmpfh",
    "name": "uBlock Origin Lite",
    "url": "https://chromewebstore.google.com/detail/ublock-origin-lite/ddkjiahejlhfcafbddmgiahcphecmpfh",
    "developer": "Raymond Hill (gorhill)",
    "developerWebsite": null,
    "developerEmail": null,
    "category": "make_chrome_yours/privacy",
    "users": 22000000,
    "rating": 4.52,
    "ratingCount": 3745,
    "version": "2026.1021.1354",
    "lastUpdated": "2026-10-21T17:59:52.000Z",
    "created": null,
    "sizeBytes": 9175040,
    "shortDescription": "An efficient content blocker. Blocks ads, trackers, miners, and more immediately upon installation.",
    "manifestVersion": 3,
    "permissions": ["activeTab", "alarms", "declarativeNetRequest", "offscreen", "scripting", "storage", "unlimitedStorage", "userScripts"],
    "optionalPermissions": [],
    "hostPermissions": ["<all_urls>"],
    "permissionRisk": "high",
    "broadHostAccess": true,
    "sensitivePermissions": ["activeTab", "declarativeNetRequest", "offscreen", "scripting", "userScripts"],
    "minBrowserVersion": "122.0",
    "privacyPolicyUrl": "https://github.com/gorhill/uBlock/wiki/Privacy-policy",
    "supportUrl": "https://github.com/uBlockOrigin/uBOL-issues",
    "isFeatured": null,
    "changes": {
        "since": "2026-10-25T13:17:57.175Z",
        "usersDelta": 0,
        "ratingDelta": 0,
        "ratingCountDelta": 12,
        "versionChanged": true,
        "previousVersion": "2026.1015.1200",
        "permissionsAdded": [],
        "permissionsRemoved": []
    },
    "scrapedAt": "2026-10-26T13:19:12.278Z"
}
```

**About the fields**

- `users`: Chrome shows weekly active users (rounded for big extensions), Firefox `average_daily_users`, Edge active installs.
- `permissionRisk`: `high` if the extension can read or change every website (`<all_urls>`, `*://*/*`, content scripts on all sites) or uses a sensitive API (cookies, history, webRequest, debugger, proxy, nativeMessaging, management...); `medium` for moderately sensitive APIs (tabs, scripting, downloads, bookmarks...) or more than 5 specific sites; otherwise `low`. Many popular extensions are legitimately "high": the level tells you what the extension *can* do, not that it is malicious.
- `permissions` / `hostPermissions` come from the manifest (Chrome, Edge) or from Mozilla's API (Firefox). Firefox does not expose `manifestVersion`.
- `created` is only available on Firefox. `developerEmail` is never available on Edge.
- `changes` is `null` on the first run of each extension or when `trackChanges` is off.

A run summary (counts per store, IDs not found, results per source, failed requests) is saved as `RUN_SUMMARY` in the key-value store. Removed or unpublished extensions are listed under `notFound` and are not charged. If nothing at all is extracted, the run is marked as **failed**.

### Pricing

Pay per result, no subscription:

- **Extension** (one full row, permissions included): USD 3.00 per 1,000 extensions
- Actor start: USD 0.00005 per run

Extensions that are not found are not charged.

### What it does not do (on purpose)

- **No Chrome reviews and no Chrome search**: the Chrome Web Store's robots.txt disallows `/detail/*/reviews` and `/search`, so the Actor never requests them. Use category pages or a list of IDs instead.
- **Chrome category pages** show about 30 extensions each; the Actor does not call Google's internal "load more" endpoints. Use several sub-category URLs for wider coverage.
- **No downloading of extension packages** (Mozilla's robots.txt disallows `/firefox/downloads/`).

### Speed and cost

Each extension is one request (Firefox search returns up to 50 per request). Each store gets at most one request every ~2 seconds, and the three stores run in parallel: about 60-80 extensions per minute when mixing stores. No proxies are needed.

### Is it legal?

It reads public listing data that the stores show to every visitor, at a low rate, only where robots.txt allows it, and it collects no personal data by default. Developer emails are only added if you enable them; you are then responsible for using them lawfully (GDPR, CAN-SPAM).

### Why use Chrome Web Store Scraper

- **Chrome, Firefox and Edge in one schema.** Same columns for all three stores, so you can compare a product across browsers in one spreadsheet.
- **Permissions with a risk level.** Every row lists permissions and host permissions, plus `permissionRisk` (high / medium / low), `broadHostAccess` and `sensitivePermissions`, useful for security reviews and extension allow-lists.
- **Change tracking.** Turn on `trackChanges` and each row says what changed since the last run (version, users, rating, permissions).
- **Category scans** for Chrome and Edge, and keyword search for Firefox Add-ons.
- **Extensions that are not found are not charged.**

### Cost examples

Prices at the current pay-per-event rates (see Pricing). You can set a maximum charge per run in the run options.

| Job | Approximate cost |
|---|---|
| 100 extensions | about $0.30 |
| 1,000 extensions | about $3.00 |
| Weekly check of 50 competitor extensions, one month | about $0.60 |

### Use it from your code, an integration or an AI agent

**Python** (`pip install apify-client`):

```python
from apify_client import ApifyClient

client = ApifyClient("<YOUR_APIFY_TOKEN>")
run = client.actor("latamdatatools/browser-extension-store-scraper").call(run_input={
    "extensionUrls": [
        "https://chromewebstore.google.com/detail/ublock-origin-lite/ddkjiahejlhfcafbddmgiahcphecmpfh",
        "https://addons.mozilla.org/en-US/firefox/addon/bitwarden-password-manager/",
        "https://microsoftedge.microsoft.com/addons/detail/ublock-origin/odfafepnkmbhccpbejgmiehpchacaeak"
    ]
})
for item in client.dataset(run["defaultDatasetId"]).iterate_items():
    print(item)
```

**JavaScript / Node.js** (`npm install apify-client`):

```javascript
import { ApifyClient } from 'apify-client';

const client = new ApifyClient({ token: '<YOUR_APIFY_TOKEN>' });
const run = await client.actor('latamdatatools/browser-extension-store-scraper').call({
  "extensionUrls": [
    "https://chromewebstore.google.com/detail/ublock-origin-lite/ddkjiahejlhfcafbddmgiahcphecmpfh",
    "https://addons.mozilla.org/en-US/firefox/addon/bitwarden-password-manager/",
    "https://microsoftedge.microsoft.com/addons/detail/ublock-origin/odfafepnkmbhccpbejgmiehpchacaeak"
  ]
});
const { items } = await client.dataset(run.defaultDatasetId).listItems();
console.log(items);
```

**No code:**

- **Schedules:** run it daily or weekly from Apify Console (Schedules), with the same input saved as a Task.
- **Integrations:** send results to Google Sheets, Slack, email, Make, Zapier, n8n or Airbyte from the Integrations tab, or call your own webhook when a run finishes.
- **AI agents:** add it as a tool in Claude, Cursor, VS Code and other MCP clients through the Apify MCP server (`https://mcp.apify.com`), so the agent can run Chrome Web Store Scraper and read the results.

### FAQ

**Can I call it from my own code or from an AI agent?** Yes. Start runs and fetch results with the Apify API or the JavaScript / Python clients, or use it as a tool from Claude, Cursor and other MCP clients through the Apify MCP server (`mcp.apify.com`).

**Can I run it automatically?** Yes. Create a Schedule in Apify Console (for example every morning) and add a webhook or an integration to get the results where you need them.

**Which export formats are available?** JSON, JSONL, CSV, Excel (XLSX), XML, RSS and HTML table, from the Output tab or the API.

**What does it cost?** See the Pricing section above. You only pay for the events listed there.

**Does it scrape Chrome Web Store reviews or search results?** No. The Chrome Web Store robots.txt disallows the review and search pages, so this Actor does not visit them. Use extension URLs or category pages for Chrome; keyword search works for Firefox.

**What does `permissionRisk` mean?** A simple rating based on what the extension asks for: access to all sites or sensitive APIs (cookies, history, debugger, webRequest and similar) raise it. It is a triage signal, not a malware verdict.

**Can I get the developer's contact email?** Only if you turn on `includeDeveloperEmail`, and only the support email the store itself publishes. You are responsible for using it lawfully.

# Actor input Schema

## `extensionUrls` (type: `array`):

One per line. Extension pages: https://chromewebstore.google.com/detail/<name>/<id>, https://addons.mozilla.org/en-US/firefox/addon/<slug>/, https://microsoftedge.microsoft.com/addons/detail/<name>/<id>. Category pages: https://chromewebstore.google.com/category/extensions/productivity/workflow, https://addons.mozilla.org/en-US/firefox/extensions/category/privacy-security/, https://microsoftedge.microsoft.com/addons/category/Productivity. Or short IDs: chrome:<id>, edge:<id>, firefox:<slug>.

## `firefoxSearchTerms` (type: `array`):

Keyword search through the official Firefox Add-ons API (e.g. "password manager", "ad blocker"). Chrome and Edge search are not offered (see README).

## `firefoxCategory` (type: `string`):

Optional category slug to filter the search (or to list a whole category when there are no search terms): privacy-security, tabs, appearance, bookmarks, download-management, feeds-news-blogging, games-entertainment, language-support, photos-music-videos, search-tools, shopping, social-communication, web-development, alerts-updates, other.

## `firefoxSort` (type: `string`):

Order of Firefox search / category results.

## `maxItemsPerSource` (type: `integer`):

Limit for each category page or search term. Chrome category pages show about 30 extensions. Each extension is one billable result.

## `includeDescription` (type: `boolean`):

Adds the long store description (makes the dataset bigger). The short description is always included.

## `includeDeveloperEmail` (type: `boolean`):

Adds the support / developer email that Chrome Web Store and Firefox Add-ons publish on the listing. Off by default: if you turn it on, you are responsible for using it lawfully (GDPR, CAN-SPAM).

## `trackChanges` (type: `boolean`):

Saves a snapshot of every extension in the named key-value store extension-store-history and adds a "changes" object on the next run: users delta, rating delta, new version, permissions added / removed.

## `language` (type: `string`):

Language / market for names and descriptions (e.g. en-US, es-ES, de-DE, pt-BR).

## `maxConcurrency` (type: `integer`):

Parallel requests. Kept low on purpose.

## `maxRequestsPerMinute` (type: `integer`):

Rate limit per store (each store host gets at most this many requests per minute).

## `delayBetweenRequestsSecs` (type: `integer`):

Politeness delay.

## `proxyConfiguration` (type: `object`):

Optional. Not needed in normal use.

## Actor input object example

```json
{
  "extensionUrls": [
    "https://chromewebstore.google.com/detail/ublock-origin-lite/ddkjiahejlhfcafbddmgiahcphecmpfh",
    "https://addons.mozilla.org/en-US/firefox/addon/bitwarden-password-manager/",
    "https://microsoftedge.microsoft.com/addons/detail/ublock-origin/odfafepnkmbhccpbejgmiehpchacaeak"
  ],
  "firefoxSort": "users",
  "maxItemsPerSource": 50,
  "includeDescription": false,
  "includeDeveloperEmail": false,
  "trackChanges": false,
  "language": "en-US",
  "maxConcurrency": 2,
  "maxRequestsPerMinute": 30,
  "delayBetweenRequestsSecs": 1
}
```

# Actor output Schema

## `results` (type: `string`):

No description

## `runSummary` (type: `string`):

No description

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {
    "extensionUrls": [
        "https://chromewebstore.google.com/detail/ublock-origin-lite/ddkjiahejlhfcafbddmgiahcphecmpfh",
        "https://addons.mozilla.org/en-US/firefox/addon/bitwarden-password-manager/",
        "https://microsoftedge.microsoft.com/addons/detail/ublock-origin/odfafepnkmbhccpbejgmiehpchacaeak"
    ]
};

// Run the Actor and wait for it to finish
const run = await client.actor("latamdatatools/browser-extension-store-scraper").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = { "extensionUrls": [
        "https://chromewebstore.google.com/detail/ublock-origin-lite/ddkjiahejlhfcafbddmgiahcphecmpfh",
        "https://addons.mozilla.org/en-US/firefox/addon/bitwarden-password-manager/",
        "https://microsoftedge.microsoft.com/addons/detail/ublock-origin/odfafepnkmbhccpbejgmiehpchacaeak",
    ] }

# Run the Actor and wait for it to finish
run = client.actor("latamdatatools/browser-extension-store-scraper").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
for item in client.dataset(run.default_dataset_id).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{
  "extensionUrls": [
    "https://chromewebstore.google.com/detail/ublock-origin-lite/ddkjiahejlhfcafbddmgiahcphecmpfh",
    "https://addons.mozilla.org/en-US/firefox/addon/bitwarden-password-manager/",
    "https://microsoftedge.microsoft.com/addons/detail/ublock-origin/odfafepnkmbhccpbejgmiehpchacaeak"
  ]
}' |
apify call latamdatatools/browser-extension-store-scraper --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,latamdatatools/browser-extension-store-scraper"
        }
    }
}
```

The hosted server signs you in with OAuth on first connect, so no API token belongs in this config. Clients without OAuth support can send an `Authorization: Bearer <APIFY_API_TOKEN>` header instead, using a token from API & Integrations in Apify Console (https://console.apify.com/settings/integrations).

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/spqOH8A87fxCrZEI4/builds/NMFhYL2dZARF5b7Gb/openapi.json