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
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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?
YouTube recommends 3840×2160 (16:9) for video thumbnails, with a minimum width of 640 px; this preset exports 1280×720. Keep critical text and faces inside the central 1100×620 area of a 1280×720 thumbnail - 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). YouTube's safe area for text and logos is 1235×338 at the 2048×1152 minimum (about 1544×423 on a 2560×1440 upload), and mobile devices only show that central strip, so all logos and text should sit inside it.
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 a 1280×720 file well under 2 MB, the limit when uploading from the YouTube mobile app (computer uploads allow up to 50 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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