How to Use the
Thumbify Extension
Save YouTube thumbnails with one click and generate AI-powered thumbnails directly from your browser.
Install the Extension
Download and install the Thumbify Chrome extension from the Chrome Web Store or load it manually:
- Download the extension ZIP file
- Open Chrome and go to
chrome://extensions/ - Enable "Developer mode" in the top right corner
- Click "Load unpacked" and select the unzipped extension folder
- The Thumbify icon will appear in your browser toolbar
Login to Your Account
To sync your saved thumbnails and use AI generation features, you need to login:
- Click the Thumbify icon in your browser toolbar
- Click the "Login" button in the popup
- You'll be redirected to the Thumbify website to login or create an account
- After logging in, return to YouTube - your saved thumbnails will sync automatically
Save YouTube Thumbnails
Saving thumbnails from YouTube is super easy:
- Browse YouTube as usual (home page, search results, channel pages, etc.)
- Hover over any video thumbnail
- Click the ⭐ star button that appears on the thumbnail
- The thumbnail is instantly saved to your collection!
💡 Pro Tip
Click the star again to unsave a thumbnail. Saved thumbnails show a filled star.
View Your Collection
Access your saved thumbnails anytime:
- Click the Thumbify icon in your browser toolbar
- Your saved thumbnails appear in the popup
- Click a thumbnail to open the original YouTube video
- Click the ✨ button to generate a new thumbnail with AI
- Click the 🗑️ button to delete a thumbnail from your collection
For a larger view, click "Saved" in the quick actions to open the full collections page on the website.
Generate AI Thumbnails
Turn your saved thumbnails into AI-generated masterpieces:
- From the popup, click the ✨ button on any saved thumbnail, or
- Click "Generate with AI" button at the bottom
- You'll be taken to the AI generation page on Thumbify
- Choose a style, add prompts, and generate your thumbnail!
Generate
New thumbnail from scratch
Recreate
Similar but unique
Edit
Modify specific parts
Quick Actions
Generate
Open the AI thumbnail generator page
My Work
View all your generated thumbnails
Saved
Browse your saved YouTube thumbnails
Tutorial
You're reading it right now! 😊
Troubleshooting
Star button not showing?
Try refreshing the YouTube page. The extension needs a moment to load on new pages.
Thumbnails not syncing?
Make sure you're logged in. Click the extension icon and check your login status.
Channel name showing as "Unknown"?
This can happen on some YouTube pages. Try saving from the main YouTube home page for best results.
Ready to Create Amazing Thumbnails?
Start saving and generating thumbnails today!