為Instagram調整圖片尺寸
Resize to the dimensions Instagram expects, so the platform does not crop your image for you. 直接在瀏覽器中執行——無需上傳、無需註冊、完全私密。
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Instagram expects 1080×1080 for feed posts and 1080×1920 for stories. 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 Instagram.
- 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: Instagram re-compresses anything larger, so exporting at the target size keeps more detail.
Frequently asked questions
What image size does Instagram use?
1080×1080 for feed posts and 1080×1920 for stories. Those numbers change occasionally, so if a platform update moves them, resize again to the new target.
Why does Instagram 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 — Instagram re-compresses anything larger, so exporting at the target size keeps more detail.