Free YouTube Image Cropper. Resize for Thumbnail, Video Frame, and Channel Art.
Resize any image to a YouTube thumbnail, video frame, or channel banner. Runs entirely in your browser - no upload, no account.
Presets: 1280×720 (Thumbnail), 1920×1080 (Video Frame (Full HD)), 2560×1440 (Channel Art / Banner)
Your image is processed in your browser. We never see, upload, or store it. No signup required.
Drag and drop an image here, or click to browse.
JPEG, PNG, WebP, or GIF · Max 20 MB
Just cropped your image? Schedule it across YouTube and 10 other networks with PostFast in 30 seconds.
Start free trialLooking for the full YouTube image size guide? See our reference at /sizes/youtube.
View YouTube sizes →YouTube Cropper FAQ
What size is a YouTube thumbnail?
1280×720 (16:9) is the minimum recommended size. Keep critical text and faces inside the central 1100×620 area - YouTube overlays the video duration in the bottom-right and the thumbnail can render as small as 116×65 on mobile.
What size should my YouTube channel banner be?
Upload at 2560×1440 (16:9). Mobile devices only show the central 1546×423 strip, so all logos and text should sit inside that safe zone.
Will the cropper handle a 4K source image?
Yes. The cropper accepts any size up to 20 MB. Output is always rendered at the exact preset dimensions (e.g. 1280×720), so YouTube will not need to resize it again.
Should I export my thumbnail as PNG or JPG?
JPG at 85-90% quality keeps the file under 2 MB while staying sharp. PNG is better for thumbnails with crisp text overlays where compression artefacts would be visible.
Is my image uploaded anywhere when I crop?
No. The cropper is fully client-side using the Canvas API. Verify in DevTools - there are zero network requests during upload, crop, and download.
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