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Utility ToolThumbnail Size Checker
Upload your thumbnail image and instantly check if it meets YouTube's recommended size, aspect ratio and file size requirements.
Instant CheckAll RequirementsUpload & VerifyFree
Upload Your Thumbnail Image
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Click to upload or drag & drop
JPG, PNG, WebP supported
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SIMPLE PROCESS
How to Use This Tool
1
Upload Thumbnail
Click or drag & drop your thumbnail image file.
2
Instant Analysis
See dimensions, file size, aspect ratio, and whether each requirement passes or fails.
3
Fix & Re-upload
If any checks fail, fix your thumbnail and upload again to verify.
WHY TUBEVIDEOSAVER
Powerful Features, Zero Cost
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Instant Results
Results appear in under a second — no server calls or waiting.
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100% Private
Your data stays in your browser. Nothing stored or shared.
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Always Free
No hidden costs, no premium tiers. Free forever.
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Any Device
Works on mobile, tablet, and desktop — no app needed.
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No Account
Zero signup required. Just use the tool and go.
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No Limits
Use as many times as you need. No daily caps.
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GUIDE
YouTube Thumbnail Requirements
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YouTube Thumbnail Requirements
YouTube has specific requirements for thumbnails: minimum 1280×720 pixels, maximum 2MB file size, and a 16:9 aspect ratio. Thumbnails that do not meet these specs either get rejected or display incorrectly — resulting in a blurry, cropped, or distorted first impression for your video.
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PRO TIPS
Thumbnail Requirements At a Glance
1
Minimum 1280×720 Pixels
YouTube recommends 1280×720 as the standard resolution. Lower resolutions appear blurry on high-DPI displays.
2
Maximum 2MB File Size
YouTube rejects thumbnails over 2MB. Compress your image using Squoosh or TinyPNG if needed.
3
16:9 Aspect Ratio
All YouTube thumbnails display in 16:9 ratio. Other ratios get cropped or letterboxed.
4
JPG, PNG, or WebP Format
YouTube accepts JPG, PNG, GIF (static only), BMP, and WebP. JPG at 80-90% quality is the best balance of quality and size.
GOT QUESTIONS?
Frequently Asked Questions
1280×720 pixels at 16:9 aspect ratio is the standard. This ensures crisp display on all screens from mobile to 4K.
YouTube accepts JPG, PNG, GIF (static), BMP, and WebP formats. JPG is recommended for photos, PNG for graphics with transparency.
2MB maximum. If your thumbnail is over 2MB, compress it with a tool like Squoosh.app — high quality at 80% JPEG usually reduces file size by 50-70%.
Likely uploaded at a resolution lower than 1280×720. Always start with at least 1280×720 and never scale up from a smaller image.
Check Your YouTube Thumbnail Instantly
Upload and verify dimensions, file size, and aspect ratio — all in one click.