YouTube Thumbnail Size Checker – Validate Image Dimensions
Check if your thumbnail meets YouTube size requirements (1280x720, under 2MB)🔒 All processing happens in your browser. Your data never leaves your device.
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Click to upload or drag and drop
Accepts: IMAGE/*
Max size per file: 6MB
Max 2MB, recommended 1280x720 pixels (16:9)
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How to Use
- 1Upload your thumbnail image (JPG, PNG, or GIF)
- 2Tool automatically validates dimensions, aspect ratio, file size, and format
- 3Check the validation results to see if your thumbnail meets YouTube requirements
- 4Fix any issues highlighted in red before uploading to YouTube
Example
Input:
Upload a 1280x720 thumbnail imageOutput:
Instant validation: ✓ Dimensions, ✓ Aspect Ratio, ✓ File Size, ✓ FormatFrequently Asked Questions
What are YouTube's thumbnail requirements?
YouTube recommends 1280x720 pixels (16:9 aspect ratio), maximum 2MB file size, in JPG, PNG, or GIF format.
Why is aspect ratio important?
A 16:9 aspect ratio ensures your thumbnail displays correctly across all devices without cropping or letterboxing.
Is my thumbnail stored anywhere?
No, all processing happens in your browser. Your thumbnail is never uploaded to any server.
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Note: This is an independent third-party tool. We are not affiliated with YouTube or Google. "YouTube" is a trademark of Google LLC.