How to resize a YouTube thumbnail
- Click Select images and choose your thumbnail design or a frame from your video.
- The size is preset to 1280×720, the size YouTube recommends.
- Keep Crop to fill so the image fills the 16:9 frame without distortion.
- Choose JPG under Format to keep the file small, then click Resize and download.
YouTube thumbnail requirements
- Resolution: 1280×720 pixels (minimum width 640 pixels)
- Aspect ratio: 16:9
- File size: under 2 MB
- Formats: JPG, PNG or GIF (not animated)
Thumbnail tips that improve click-through
Thumbnails are shown very small in search results and on phones, so keep them simple: one clear subject, a face showing emotion if relevant, and no more than a few large words. Use strong contrast between text and background, and avoid putting important details in the bottom-right corner, where YouTube shows the video length. Check how your design looks at small sizes before uploading.
Other sizes for your channel
Channel banners are 2560×1440 with a safe area of 1546×423 in the middle; profile pictures should be 800×800. You can type any size into the width and height fields above. For Instagram posts, use the Instagram resizer.
Making a thumbnail from a video frame
If you don’t have a designed thumbnail, pause your video on a sharp, expressive frame and take a screenshot. On Windows press Win+Shift+S; on a Mac press Cmd+Shift+4; on a phone use the normal screenshot buttons. Screenshots of full-screen video are already 16:9, so after resizing to 1280×720 nothing is cropped. Screenshots that include browser bars or phone notches can be trimmed first with the Image Cropper using the 16:9 ratio.
Why thumbnails look blurry after upload
YouTube recompresses every thumbnail. Starting from exactly 1280×720 avoids an extra resize step, and saving as high-quality JPG keeps text edges clean. Avoid thin fonts and tiny details, which blur at the small sizes thumbnails are displayed at on phones and in the sidebar. Very large PNG files may also be rejected for exceeding 2 MB.
Batch resizing for a series
Creating thumbnails for a playlist or a course? Add all the images at once; each is resized and cropped to 1280×720 and you can download them together as a ZIP, keeping a consistent look across the series.
Frequently asked questions
What size should a YouTube thumbnail be?
1280×720 pixels (16:9), with a minimum width of 640 pixels. The file must be under 2 MB and can be JPG, PNG or GIF.
My thumbnail is over 2 MB. What should I do?
Choose JPG as the format when resizing, or run the result through the Image Compressor with a 200 KB or 1 MB target.
Will my image be stretched?
No. Crop to fill keeps the original proportions and trims the edges to fit 16:9.