shouldiuse.io

Comparison

Add-ons for Firefox (en-US) vs Chrome Web Store

Add-ons for Firefox (en-US) lands on Worth it, and Chrome Web Store lands on Depends.

Add-ons for Firefox (en-US)

addons.mozilla.org

Worth it
Confidence: Medium

Use it if you browse with Firefox . it's Mozilla's official, free extension store with a huge catalog.

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Chrome Web Store

chromewebstore.google.com

Depends
Confidence: Medium

If you use Chrome, this store is unavoidable . it is effectively the only extension marketplace . but treat every install as a security decision.

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Add-ons for Firefox (en-US) versus Chrome Web Store
CompareAdd-ons for Firefox (en-US)Chrome Web Store
VerdictWorth itDepends
Best forFirefox users wanting ad blockingChrome users wanting extensions
Who it's not forChrome, Edge, or Safari users . add-ons require FirefoxFirefox or Safari users . wrong ecosystem entirely
PrivacyNo known public vulnerabilities found in the sources reviewed.²Chronic malicious-extension problem: Google's review process exists, but researchers and journalists document repeated large-scale failures.14
Support qualityPer-developer; broken add-ons persist per reviewsSlow opaque reviews; user reviews vanish with no recourse
Public sentimentUsers love free, lightweight blockers like uBlock Origin but regularly hit extensions that break, conflict with sites, or stop being maintained.⁴Users value the selection, but developers consistently complain about slow reviews, weak discoverability, and poor curation.
Biggest gotchaLock-in: extensions only work in Firefox; switching browsers means rebuilding your setup¹Store payments were shut down; you must build billing through third parties like ExtensionPay11

Pick Add-ons for Firefox (en-US) when

  • Firefox users wanting ad blocking
  • Privacy-conscious browsers
  • Password manager and tracker-blocking needs
  • People who like customizing browser appearance

When Add-ons for Firefox (en-US) is not a fit

  • Chrome, Edge, or Safari users . add-ons require Firefox
  • Anyone expecting curated, enterprise-vetted software
  • Teams needing central licensing or procurement controls
  • Users unwilling to vet individual extensions themselves

Pick Chrome Web Store when

  • Chrome users wanting extensions
  • Developers reaching Chrome's user base
  • Enterprises managing extension fleets
  • Light browsing personalization

When Chrome Web Store is not a fit

  • Firefox or Safari users . wrong ecosystem entirely
  • Teams wanting vetted, audited software
  • Developers wanting built-in payments and billing
  • Anyone expecting strict quality curation

Sources

  1. Add-ons for Firefox homepageaddons.mozilla.org
    official
  2. About Firefox Add-onsaddons.mozilla.org
    official
  3. Extensions directoryaddons.mozilla.org
    official
  4. uBlock Origin reviewsaddons.mozilla.org
    review
  5. Block Site reviewsaddons.mozilla.org
    review
  6. AdBlock for Firefox reviewsaddons.mozilla.org
    review
  7. Add-on (Mozilla) - Wikipediaen.wikipedia.org
    news
  8. Chrome Web Store review processdeveloper.chrome.com
    official
  9. Register your developer accountdeveloper.chrome.com
    official
  10. Chrome Web Store Developer Registration Fee 2026extensionradar.com
    review
  11. ExtensionPay is the Chrome Web Store Payments Replacementextensionpay.com
    official
  12. Avoiding lengthy review times for Chrome webstore submissionsgetsnapfont.com
    review
  13. Chrome Web Store is a messpalant.info
    security
  14. Security researcher finds 287 Chrome extensions leaking datatheregister.com
    security
  15. Over 100 Chrome Web Store extensions steal user accounts, datableepingcomputer.com
    security
  16. Malicious Chrome extensions with 1.7M installs found on Web Storebleepingcomputer.com
    security