Chrome Extension Size Checker
Verify your extension ZIP is under the Chrome Web Store's 10MB limit before submitting.
The Chrome Web Store enforces a strict 10MB size limit on extension ZIP files. If your package exceeds this, your upload will be rejected — often without a clear error message. This tool lets you check your extension size locally before you waste time submitting.
Your file is analyzed entirely in your browser using the File API. No data is uploaded to any server. Just drop your ZIP and get an instant pass/fail result.
Drop your extension ZIP here
or click to browse files
Accepts .zip files only
Frequently Asked Questions
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