为Facebook调整图片尺寸
Resize to the dimensions Facebook expects, so the platform does not crop your image for you. 直接在浏览器中运行——无需上传、无需注册、完全私密。
或点击浏览文件
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Facebook expects 1200×630 for shared links and 1640×856 for cover photos. Uploading something else means the platform decides how to crop or squeeze your image, and it rarely chooses the part you cared about. Resize here first and you control the result.
How it works
- Add your photo — nothing is uploaded anywhere.
- The dimensions are preset for Facebook.
- Check the preview to confirm the important part of the image survives.
- Download and upload that file instead of the original.
Good to know
Why this matters: Facebook crops anything with an unexpected ratio, so matching the size avoids losing the edges.
Frequently asked questions
What image size does Facebook use?
1200×630 for shared links and 1640×856 for cover photos. Those numbers change occasionally, so if a platform update moves them, resize again to the new target.
Why does Facebook crop my photo?
Because the ratio you uploaded does not match what the layout expects, so it trims to fit. Resizing to the correct dimensions first removes the guesswork — Facebook crops anything with an unexpected ratio, so matching the size avoids losing the edges.