YouTube Thumbnail Maker
Resize any image to the exact 1280x720 pixels required by YouTube, while automatically compressing the file size to stay safely under the 2MB limit. 100% private and client-side.
Width
1280 px
Height
720 px
Max size
2 MB
Format
JPG
Drop an image for your thumbnail
Automatically resize to 1280x720 and compress under 2MB.
Key details
Dimensions
1280 x 720 px
File size limit
Under 2MB
Aspect ratio
16:9
Output Format
JPG
How it works
Select an image
Upload a JPG, PNG, or WebP image you want to use as your thumbnail.
Automatic Resizing
We automatically crop and resize your image to exactly 1280x720 pixels (16:9 ratio).
Smart Compression
The image is automatically compressed to ensure it stays below YouTube's strict 2MB limit.
Frequently asked questions
What is the perfect size for a YouTube thumbnail?
The ideal size for a YouTube thumbnail is 1280 pixels wide by 720 pixels tall (16:9 aspect ratio).
Why does YouTube reject my thumbnail?
The most common reason is the file size. YouTube limits thumbnail uploads to 2MB. This tool automatically adjusts the quality to ensure the final JPG is under this limit.
Is this tool free and private?
Yes! All processing happens directly in your browser using standard HTML5 Canvas. Your images are never uploaded to any server.
Bharat Kumar G.verified
Technical SEO & Document Processing Expert
Bharat is the founder of ReadyToSubmit. With years of experience in technical web development, he builds privacy-first, client-side tools to help Indian government exam aspirants format their applications accurately and securely without server uploads.