What is CRX Downloader?

Updated

CRX Downloader (crx-downloader.com) is a web service that lets you download Chrome extensions as ZIP or CRX files instead of installing them directly from the Chrome Web Store. It's aimed at people who need the extension package itself — for example, to load it into a testing tool like Selenium, or to inspect the extension's contents. If you just want to use an extension in your normal browser, you don't need this site; the Chrome Web Store install button is simpler.

What it does

The site's stated purpose is straightforward: take a Chrome extension and give you back a downloadable file in one of two formats.

  • ZIP — the unpacked extension files, useful when you want to read the source, check permissions, or load it as an unpacked extension in a Chromium-based browser.
  • CRX — Chrome's packaged extension format, the same container the browser uses when installing from the Web Store.

Alongside each download, the site shows a link to the extension's page on the Chrome Web Store, so you can verify what you're getting before or after downloading.

Who it's for

The site names two use cases directly:

  1. Testing tools like Selenium. Automated browser testing often needs an extension loaded from a local file rather than installed through the UI. A downloaded CRX or unpacked ZIP can be passed to the test driver.
  2. Viewing extension content. If you want to read an extension's manifest, scripts, or assets, downloading the package gives you the files to open locally.

It's less useful if your goal is simply to add an extension to your everyday browser — that's what the Chrome Web Store is for.

How the download flow looks

The homepage presents a running list of recent downloads, each entry showing the extension name, a link to its Chrome Web Store page, and how long ago it was downloaded (for example, "13 minutes ago" or "3 hours ago"). This acts as a live activity feed and a rough signal of what other users are pulling.

The site also reports a cumulative usage counter — the page states the service "was 245,377 times useful" — which is the site's own measure of downloads served. Treat it as a popularity indicator, not a guarantee about any specific extension.

There are also reference pages linked from the site covering related basics: what a Chrome extension is, advantages of using extensions, top-rated extensions, and a roundup of extensions for content writers.

Practical things to know before you download

  • Verify the source. The Chrome Web Store link next to each download is your way to confirm the extension is the one you intend to get. Downloading a package from a third-party site means you're trusting that site's copy matches the store version.
  • CRX vs. ZIP depends on your tool. Some automation setups expect a CRX; others want an unpacked directory, which is what the ZIP gives you. Check your tool's documentation before choosing.
  • Format matters for inspection. If you only want to read the code, the ZIP is the more convenient option since you can open the files directly without unpacking a CRX first.

The site doesn't publish pricing details on the page, so there's nothing to confirm about cost or account requirements from the material available — plan around what you can verify by using the service directly.