Chrome Web Store Publishing Checklist: Get Your Extension Approved Fast in 2025

February 28, 2025 · 11 min read · Chrome Extensions, Publishing

Chrome Web Store Publishing Checklist: Get Your Extension Approved Fast in 2025

Publishing a Chrome extension to the Web Store should be straightforward, but the review process can trip up even experienced developers. Extensions get rejected for unclear reasons, delayed for weeks, or — worse — pulled after publication for policy violations. Understanding what reviewers look for and preparing your extension accordingly can mean the difference between approval in 24 hours and a months-long appeal process.

This comprehensive checklist covers everything you need to prepare, submit, and maintain your Chrome extension in 2025. Whether you’re publishing your first extension or refining your process for the tenth, these steps will help you avoid the most common pitfalls and get your extension into the hands of users faster.

Pre-Submission Preparation: Set Yourself Up for Success

Before you ever click the “Publish” button, your extension needs to meet a set of technical, policy, and quality standards. Chrome’s review team has gotten stricter in recent years, and extensions that might have sailed through in 2020 now face careful scrutiny. Here’s what you need to do before submission.

Manifest File Requirements

Your manifest.json is the foundation of your extension. Get this wrong, and your submission will be rejected before a human reviewer even sees it. In 2025, Chrome requires Manifest V3 for all new extensions and extensions updating from V2. Make sure your manifest follows these guidelines:

Manifest Version: Use Manifest V3 exclusively. Manifest V2 has been deprecated since January 2024, and all submissions must use V3.
Required Fields: Ensure you have manifest_version, name, version, description, and icons properly defined.
Permissions: Only request the permissions your extension actually needs. Reviewers scrutinize permissions like tabs, storage, cookies, and <all_urls> especially closely. Use optional permissions where possible to limit what your extension can access.
Host Permissions: Be as specific as possible with host permissions. Instead of <all_urls>, use specific patterns like https://*.example.com/* if you only need access to certain sites.
Service Workers: If your extension uses background scripts, implement them as service workers (the service_worker field in Manifest V3) rather than persistent background pages.

Extension Icons

Your icons appear throughout the Chrome Web Store — in search results, on the extension’s listing page, and on the user’s browser toolbar. Chrome requires specific icon sizes:

128x128: The main store listing icon
48x48: Smaller display
16x16: Toolbar icon (favicon)
32x32: Windows taskbar and other system uses
96x96: High-DPI displays

Create a professional, recognizable icon that follows Google’s icon guidelines. Avoid using Chrome’s logo, copyrighted characters, or generic clip art. Your icon should clearly represent your extension’s functionality.

Privacy Policy and Terms of Service

Every extension that requests “broad” permissions or accesses user data needs a publicly accessible privacy policy. This includes extensions that:

Access browsing data or browser history
Use the cookies permission
Request host permissions for multiple sites
Collect or transmit any user data to external servers

Your privacy policy must be hosted on a publicly accessible URL (not a local file or behind authentication). It should clearly explain what data your extension collects, how it’s used, whether it’s shared with third parties, and how users can delete their data.

If your extension connects to external services or APIs, also provide a Terms of Service URL.

Screenshot and Video Requirements

Your Chrome Web Store listing needs visual assets to help users understand your extension:

At least one screenshot: Upload at least one 1280x800 or 640x400 screenshot showing your extension in action. You can add up to five screenshots. These should clearly demonstrate your extension’s functionality — don’t just show a blank UI.
Promotional tile: Chrome uses a 440x280 promotional tile for featured extensions. While not required, creating one improves your chances of being featured.
Demo video (optional but recommended): A short video demonstrating your extension can significantly increase conversion rates. Keep it under 60 seconds and focus on the core value proposition.

Technical Requirements: What Reviewers Check Under the Hood

Chrome’s automated systems and human reviewers will examine your extension’s code for technical compliance. Here’s what they’re looking for:

Code Quality and Security

No Inline Scripts: Manifest V3 prohibits inline JavaScript. All your code must be in external files referenced through the manifest.
Content Security Policy: Define a proper CSP in your manifest. Avoid overly permissive policies like script-src 'self' 'unsafe-eval' 'unsafe-inline'.
Remote Code: Don’t load remote code (JavaScript or Wasm) from external sources. All functionality must be bundled with your extension.
Obfuscated Code: Don’t minify or obfuscate your code in ways that hide its functionality. Reviewers need to understand what your extension does.
No Deprecated APIs: Ensure you’re not using deprecated Chrome APIs. Check the Chrome API docs for current supported APIs.

Performance Considerations

Chrome expects extensions to be performant. Extensions that consume excessive memory, cause browser crashes, or slow down the browser may be rejected or flagged:

Service Worker Optimization: If using service workers, implement proper event handling and avoid keeping the service worker active unnecessarily.
Memory Management: Test your extension with many tabs open. Memory leaks are a common cause of negative reviews and potential removal.
Lazy Loading: Load features on demand rather than at startup when possible.

Testing Across Scenarios

Before submitting, thoroughly test your extension:

Install it from a packed .zip file (not from the developer dashboard in “Draft” mode)
Test in a fresh Chrome profile (no other extensions installed)
Test incognito mode (if your extension works there)
Test with all permissions granted vs. optional permissions declined
Check console for errors in both the popup and any background service worker

Policy Compliance: Avoiding Rejection

Chrome’s Developer Program Policies are extensive and get updated regularly. Violating these policies is the most common reason for rejection. Here’s what you need to know in 2025:

Single-Purpose Policy

Chrome requires that each extension have a single, clearly stated purpose. Your extension should do one thing well. If you’ve built an all-in-one productivity suite, consider splitting functionality into separate extensions or clearly explaining how features relate to a unified purpose.

The single-purpose rule applies to:

Functionality: Don’t bundle unrelated features. A tab manager and a note-taking app should be separate extensions.
Permissions: Each permission should relate to your extension’s core purpose.
UI: Avoid cluttered interfaces with many unrelated features.

User Data and Privacy

The Chrome Web Store has gotten particularly strict about user data practices:

Minimal Data Collection: Collect only the data absolutely necessary for your extension to function.
Clear Disclosure: Tell users what data you collect before they install or when they first use your extension.
No Exfiltration: Don’t send user data to third parties without clear consent and disclosure.
Secure Transmission: All data transmission must be over HTTPS.
Data Deletion: Provide a way for users to delete their data, and honor deletion requests promptly.

Prohibited Content and Behavior

The following will get your extension rejected or removed:

Malware and Viruses: Obviously, don’t include malicious code. But also be careful with third-party libraries — ensure they’re secure and don’t contain malware.
Adware and Spyware: Extensions that inject ads, track users without consent, or redirect traffic are prohibited.
Deceptive Functionality: Don’t trick users into installing or mislead them about what your extension does.
Cryptocurrency Mining: Using user resources for crypto mining is strictly prohibited.
Content Theft: Don’t scrape or redistribute copyrighted content without permission.
Impersonation: Don’t impersonate other extensions, Chrome itself, or other brands.

Trust and Safety

Google has tightened trust and safety requirements:

Developer Verification: Complete the Chrome Web Store developer verification process. This involves a small fee and identity verification.
Account Age: New developers may face additional review time. Established developer accounts with a history of compliant extensions get faster reviews.
Repeat Violations: Extensions from developers with a history of policy violations face longer review times and potential account termination.

The Submission Process

Once your extension is ready, here’s how to submit it:

1. Prepare Your Extension Package

Create a .zip file containing your extension. Include:

manifest.json
All JavaScript files
All HTML and CSS files
Icons (in an icons folder or at the root)
Any other required files (images, fonts, etc.)

Do not include:

Source maps (unless needed for debugging, and even then, be cautious)
Build artifacts or temporary files
Node_modules or other development dependencies

2. Upload to the Developer Dashboard

Go to the Chrome Web Store Developer Dashboard and create a new item. Upload your .zip file.

3. Fill Out Store Listing Details

Name: Keep it under 45 characters. Make it descriptive and searchable.
Description: Explain what your extension does clearly. Avoid keyword stuffing. Use the first few lines carefully — they appear in search results.
Category: Choose the most relevant category.
Language: Select the primary language.
Visibility: Choose “Public,” “Unlisted,” or keep as “Draft” for testing.

4. Submit for Review

Click “Publish.” Your extension enters the review queue. In 2025, review times vary:

New extensions: Typically 1-7 days, but can take longer for extensions with broad permissions
Updates to existing extensions: Usually faster, 1-3 days
Extensions with sensitive permissions: May take 7+ days or require additional information

Common Rejection Reasons and How to Avoid Them

Understanding why extensions get rejected helps you prevent these issues:

Overbroad Permissions

The number one reason for rejection is requesting more permissions than necessary. If your extension only needs to access one website, don’t request host permissions for all sites. If you only need to read storage, don’t request full access.

Solution: Audit every permission. Ask yourself: “Does my extension absolutely need this to function?” If not, remove it or make it optional.

Poor Description or Screenshots

Extensions get rejected when it’s unclear what they do. Vague descriptions like “This extension improves your browsing experience” don’t pass muster.

Solution: Write a clear, specific description. Explain exactly what functionality your extension provides. Show screenshots that demonstrate real features.

Privacy Policy Issues

Missing, incomplete, or hosted improperly privacy policies cause rejections.

Solution: Write a comprehensive privacy policy. Host it on a public URL (GitHub Pages, your own website, etc.). Link it in your extension’s manifest and store listing.

Single-Purpose Violations

Trying to do too much with one extension triggers policy violations.

Solution: Define one clear purpose. If you have multiple features, either narrow your focus or consider multiple extensions.

Technical Issues

Bugs, crashes, or code that doesn’t work as described lead to rejection.

Solution: Test thoroughly. Have beta testers try your extension. Make sure everything works exactly as described in your listing.

After Approval: Maintaining Compliance

Getting approved is only half the battle. You also need to maintain compliance:

Monitoring Reviews and Feedback

Users will report issues. Monitor your reviews and respond professionally to feedback. Address bugs quickly — extensions with many negative reviews may be removed from the store.

Handling Updates

When you update your extension, it goes through review again. Major changes to permissions or functionality may require additional scrutiny. Plan for this review time when rolling out important updates.

Staying Current with Policies

Google updates its policies regularly. Subscribe to the Chrome Web Store blog and developer newsletters to stay informed about policy changes that might affect your extension.

Handling Rejection Gracefully

If your extension is rejected, don’t panic. Read the rejection reason carefully. Often, you can make the required changes and resubmit. If you believe the rejection was in error, you can appeal through the developer dashboard.

When appealing:

Be professional and concise
Explain what changes you made to address the concerns
Provide evidence that your extension complies with policies

Final Checklist Before You Publish

Before hitting submit, run through this final checklist:

Conclusion

Publishing a Chrome extension in 2025 requires attention to detail, but the process is manageable when you understand what’s expected. Focus on building a quality extension with a clear purpose, minimal permissions, and transparent data practices. Test thoroughly, follow the guidelines, and you’ll be rewarded with a smooth review process and an approved extension in the Chrome Web Store.

The key takeaway: prepare meticulously, be transparent with users about what your extension does and what data it accesses, and never stop testing. With this checklist in hand, you’re well-equipped to navigate the publication process and get your extension into the hands of the millions of Chrome users worldwide.

Ready to publish? Use this checklist, submit your extension, and start building your user base today.