Resize Image for Discord (512×512 Avatars & Emoji)

Resize a photo or graphic to 512×512 pixels — the size Discord recommends for uploading avatars and custom emoji. Crop to a clean square and download.

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Use it right here — already set up for this task

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

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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

  1. 上传图片 — 拖放或点击上传PNG、JPG或WebP图片。
  2. 设置尺寸 — 输入自定义宽度和高度，或选择社交媒体预设。
  3. 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。
  4. 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。
  5. 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。

标准与参考资料

最后更新: 2026-09-28

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Open the full Image Resizer →

Why this matters

Discord recommends uploading avatars and custom emoji at 512×512, even though it displays them much smaller — around 128×128 for a standard avatar thumbnail and even smaller for emoji in chat. The extra resolution matters because Discord's own client re-scales the image for retina displays, larger profile views, and emoji picker previews; uploading something already small and low-resolution looks visibly soft once Discord scales it back up. Starting from a properly cropped 512×512 square avoids that blur across every place Discord displays it.

Step by step

  1. 1
    Open the Image Resizer
    The dimensions are already set to 512×512 — drop in your avatar or emoji source image.
  2. 2
    Crop to a clean square
    Center your face or icon so nothing important sits at the very edge, since avatars display as circles in most views.
  3. 3
    Preview
    Check the preview to make sure the subject stays centered once the corners are cropped away.
  4. 4
    Download
    Save the 512×512 image to your device.
  5. 5
    Upload to Discord
    Use it as your server or user avatar, or add it as a custom emoji in a server with emoji slots available.

Frequently asked questions

What size does Discord recommend for avatars?

Discord recommends uploading at 512×512, even though the avatar displays at roughly 128×128 in most views — the extra resolution keeps it sharp on high-DPI screens.

Is 512×512 also the right size for custom emoji?

Yes for the upload — Discord accepts up to 512×512 for custom emoji uploads (max 256 KB file size), then displays them much smaller in chat, typically around 32×32 to 48×48.

Is my image uploaded to a server to resize it?

No. Resizing runs entirely in your browser before you manually upload the result to Discord.

Why does my avatar look blurry on Discord?

Usually because the original upload was smaller than 512×512 and Discord scaled it up for larger displays like the profile popup. Upload at 512×512 or larger to avoid this.

Does Discord crop avatars into a circle?

Yes — avatars display as circles throughout the app. Keep your subject centered so nothing important gets clipped at the corners.

What if my emoji file is too large for Discord?

Discord caps custom emoji uploads at 256 KB. Resize to 512×512 here, then compress with Compress Image to 200 KB if the file is still too big.

Try Image Resizer now
Free, private, no signup. Runs in your browser.
Open Image Resizer →

Further reading

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