Chrome Web Store Scraper: Extension Users, Ratings, Versions & Permissions

Get Chrome Web Store extension data as JSON, CSV or Excel: users, rating, rating count, version, last updated date, size, category and category rank, Featured badge, publisher, and the permissions and host permissions each extension requests. Track competitors, find fast growing extensions, or audit risky permissions. Monitor mode tells you when an extension ships a new version, gains users, or adds new permissions.

The Actor only reads pages the store allows in its robots.txt: public detail pages, category pages and the official sitemap. It does not use the disallowed search and review pages, needs no login, and runs without a browser.

For AI agents (MCP / API) quick reference

• Use when: you need facts about Chrome extensions (installs, rating, version, update date, permissions, category rank) for given extension IDs or URLs, for a category, or for extensions whose name contains a keyword.
• Don't use for: extension reviews text, or Firefox and Edge add-ons.
• Minimal input: {"extensions": ["kbfnbcaeplbcioakkpcpgfkobkghlhen"]} or {"categories": ["productivity/workflow"], "maxItems": 30} or {"sitemapKeywords": ["ai writing"], "minUsers": 1000, "maxItems": 50}.
• Output: one item per extension: extensionId, name, url, users, rating, ratingCount, version, lastUpdated, sizeBytes, category, categoryRanks, featured, publisher, manifestVersion, permissions, hostPermissions, optionalPermissions, contentScriptMatches, changesSinceLastRun.
• Price: $0.001 per run + $0.003 per extension. 30 extensions cost about $0.09. Pay per event only, limited permissions, so agentic payments (x402, Skyfire, Apify AGI token) work.
• MCP: add https://mcp.apify.com?tools=kempt_horizon_yzk/chrome-web-store-scraper to your MCP client.

What can it do?

• 🧩 Extension details: name, short description, users, rating, rating count, version, last updated, size, languages, category, Featured badge, EU trader status, publisher (business name only), icon
• 🔐 Permissions from the manifest: API permissions, host permissions, optional permissions, content script match patterns, manifest version
• 🏆 Category rankings: every extension listed on a category page with its position
• 🔎 Keyword discovery through the official sitemap (about 400,000 listings), matching words in the extension's store URL name
• 🎯 Filters: min and max users, min rating, updated within N days, required permissions. Filtered items are never charged.
• 🔁 Monitor mode: only new or changed extensions, with a changesSinceLastRun diff covering version, users, rating, rating count and newly added permissions
• 🛡️ Retries with backoff, low concurrency, optional proxy

Who uses it?

Extension developers watching competitors, security and IT teams auditing what extensions request, investors and M&A scouts looking for extensions with large user bases, and marketers researching the browser extension market.

How much does it cost?

Event	Price
Actor start	$0.001
Extension	$0.003

1,000 extensions cost $3. Set a maximum cost per run and the Actor stops cleanly.

How to use it

1. Click Try for free. The example input (two extensions and the Workflow category, 10 results) returns data in a few seconds.
2. Add extension URLs or IDs, categories, or keywords.
3. Add filters if you like, then click Start.
4. Download JSON, CSV or Excel, or use the API. For alerts, enable Monitor mode and a daily Schedule.

Input example

{
  "categories": ["productivity/developer", "productivity/tools"],
  "sitemapKeywords": ["chatgpt", "ai writing"],
  "minUsers": 5000,
  "updatedWithinDays": 90,
  "maxItems": 200,
  "onlyNew": true,
  "stateKey": "ai-extensions-watch"
}

Output example

{
  "extensionId": "kbfnbcaeplbcioakkpcpgfkobkghlhen",
  "name": "Grammarly: AI Writing Assistant and Grammar Checker App",
  "url": "https://chromewebstore.google.com/detail/grammarly-ai-writing-assi/kbfnbcaeplbcioakkpcpgfkobkghlhen",
  "shortDescription": "Grammarly for Chrome helps you write with confidence. Get AI support for grammar, clarity, and tone, from first draft to final edit.",
  "users": 41000000,
  "rating": 3.87,
  "ratingCount": 43153,
  "version": "14.1338.0",
  "lastUpdated": "2026-10-14",
  "sizeBytes": 18433966,
  "sizeText": "17.58MiB",
  "languagesCount": 1,
  "publisher": "Grammarly",
  "itemType": "extension",
  "category": "productivity/communication",
  "featured": true,
  "trader": true,
  "manifestVersion": 3,
  "permissions": [
    "scripting",
    "sidePanel",
    "tabs",
    "notifications"
  ],
  "hostPermissions": [
    "http://*/*",
    "https://*/*"
  ],
  "optionalPermissions": [
    "nativeMessaging",
    "clipboardRead"
  ],
  "contentScriptMatches": [
    "<all_urls>",
    "*://docs.google.com/*",
    "*://*.atlassian.net/*",
    "*://mail.google.com/*"
  ],
  "scrapedAt": "2026-10-14T23:32:16.566Z"
}

FAQ

Why no keyword search page? The Chrome Web Store robots.txt disallows /search, so this Actor uses the official sitemap for discovery instead.

Does it return developer emails? No. It returns the publisher business name only and no personal contact data.

Why is users a round number? The store shows rounded counts (for example 41,000,000).

Built and maintained by Kempt Horizon Data. Need a field or found a bug? Open an issue on the Issues tab.

If this Actor is useful to you, a quick rating on its Store page helps other people find it. Thank you!