Resize Images for Facebook (Posts, Cover Photos, Stories)
Resize photos for Facebook posts, cover photos, profile pictures, and stories to the exact dimensions Facebook expects. No surprises, no cropping.
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图片调整大小
在线调整图片大小
调整图片为自定义尺寸或社交媒体预设。在浏览器中运行 - 无需上传。
点击上传或拖放
PNG、JPG、WebP(最大50MB)
上传图片以开始
关于图片调整大小
我们的免费图片调整大小工具可让您将图片调整为任何自定义尺寸,或从流行的社交媒体预设中选择。非常适合为Instagram、Facebook、Twitter、YouTube等优化图片。
功能：
- 自定义宽度和高度控制
- 保持长宽比切换
- 社交媒体平台快速预设
- 支持PNG、JPG和WebP格式
- 完全在浏览器中运行 - 图片不会上传到服务器
- 完全免费,无需注册或水印
使用方法
- 上传图片 — 拖放或点击上传PNG、JPG或WebP图片。
- 设置尺寸 — 输入自定义宽度和高度，或选择社交媒体预设。
- 调整图片大小 — 点击“调整图片大小”，即可在浏览器中生成新尺寸的图片。
- 预览结果 — 查看调整后的图片预览，确认新尺寸符合您的需求。
- 下载调整后的图片 — 点击下载按钮将调整后的图片保存为原始格式。
常见问题
可以为社交媒体调整图片尺寸吗？
可以！我们内置了Instagram帖子、Instagram快拍、Facebook封面、Twitter标题、YouTube缩略图和高清分辨率等预设。
调整大小会影响图片质量吗？
放大可能会降低清晰度，但缩小能较好地保持质量。使用长宽比锁定可以防止变形。
支持调整哪些文件格式？
可以调整PNG、JPG/JPEG和WebP图片（最大50MB）的大小。
调整大小后的图片以什么格式保存？
与您上传的格式相同：PNG仍为PNG，JPG仍为JPG，WebP仍为WebP。如需更改格式，请使用图片格式转换工具。
图片调整大小会将文件上传到服务器吗？
不会。所有处理完全在浏览器中完成。文件永远不会离开您的设备，确保完全的隐私和安全。
支持的最大图片尺寸是多少？
您可以调整最大50 MB的图片。新的宽度和高度各自最多可达16,384像素，这是浏览器能够稳定绘制的最大尺寸。
Why this matters
Facebook automatically crops and re-encodes images that don't match its expected aspect ratios. A timeline post photo at the wrong ratio gets letterboxed or brutally cropped; a cover photo that's a few pixels short looks blurry. Pre-sizing your images takes under a minute and guarantees your photo displays exactly as intended in every placement.
Step by step
- 1Open the Image ResizerDrop in your photo.
- 2Choose the Facebook placementPost (1200×630), Cover photo (820×312), Story (1080×1920), Profile (170×170), Event cover (1920×1005).
- 3Adjust the cropDrag the focus area — especially important for cover photos where mobile and desktop show different crop zones.
- 4DownloadSave the resized image.
- 5Upload to FacebookYour image displays cleanly with no auto-crop.
Frequently asked questions
What size should a Facebook post image be?
1200×630 pixels is the recommended size for shared link previews and regular photo posts. Square posts (1080×1080) also display well.
What are Facebook cover photo dimensions?
820×312 px on desktop, 640×360 px on mobile. A 820×312 crop covers both adequately; focus your important content in the center 560×312 zone.
What size is a Facebook profile picture?
Displayed at 170×170 px on desktop, 36×36 in the feed. Upload at 360×360 or larger for a crisp circle crop.
Is my image uploaded when resizing for Facebook?
No. All resizing happens in your browser; your photos are never sent to a server.
Does Facebook compress my image after I upload it?
Yes — Facebook re-encodes JPGs. For best quality, upload a JPG at 85%+ quality, 1200 px wide, and let Facebook handle the final encode.
What format works best for Facebook images?
JPG for photos, PNG for graphics with text. PNG files are sometimes recompressed more aggressively by Facebook, so JPG often looks better for photos.
Further reading
You might also need
- Resize Image for YouTube Thumbnail (1280×720)Create a pixel-perfect YouTube thumbnail at 1280×720 in your browser. No design software needed.
- Resize Images for Instagram (Posts, Stories, Reels)Resize any photo to the exact dimensions Instagram expects — square, portrait, story, reel, or profile pic. Pick a preset and download.
- Resize Images for Twitter / XResize images for Twitter / X to the exact dimensions the platform expects, from in-tweet photos to profile headers.
- Resize Images for LinkedIn (Posts, Banners, Profiles)Resize images for LinkedIn — profile photos, cover banners, post images — to the exact sizes LinkedIn expects.