X / Twitter 图片尺寸调整工具 - 横幅、头像、帖子与卡片尺寸

X 信息流图片为 1600 × 900 像素（16:9），头像为 400 × 400，横幅图片为 1500 × 500（3:1），链接卡片图片为 1200 × 628（1.91:1）。将文件控制在 5 MB 以内，可确保在所有客户端上正常显示。

上传图片，选择 X 信息流图片（1600 × 900）、顶部横幅（1500 × 500）、头像（400 × 400）或链接卡片（1200 × 628）预设，将焦点拖到安全区域内进行定位，然后下载可直接上传的 JPEG 或 PNG。

在用户点击之前，X 的时间线预览会显示居中的 16:9 裁剪区域。请把关键文字、人脸和产品画面放在该中心区域内——编辑器会显示安全区标记，让你确认焦点在裁剪后依然完整。

可以。X 在品牌更名后仍沿用与 Twitter 相同的尺寸，因此每个预设在两者上都适用。使用旧版宽度的早期推文和嵌入内容依然能正确显示，因为 X 会自动补足较小尺寸的版本。

80–90% 质量的 JPEG 是照片的最佳平衡点。对于包含文字、渐变和透明区域、压缩瑕疵会显现的图形，PNG 更合适。X 支持 WebP，但 JPEG/PNG 在嵌入式视图中兼容性更广。

Your image is uploaded to our server over HTTPS to perform the resize, then automatically deleted right after processing — we never store it long-term or share it with anyone, so unreleased campaign visuals, branding work and personal photos stay confidential.

Cover fills the preset frame completely and crops overflow, which suits a header banner where centered content matters most. Contain fits the whole source image inside the frame and pads any gap with your background color, which protects card images and ads where nothing should be cropped off. Stretch forces the exact target dimensions and can distort proportions, so use it only when your source is already close to the target ratio.

Open the background color picker in Settings — it fills the letterboxed space that appears whenever Contain fit can't stretch your image to the full preset dimensions. This matters most for the Card image presets (1200×628 and 800×418), where a mismatched fill color looks unpolished in link previews.

The Format dropdown offers JPG, PNG, WEBP and AVIF; JPG at quality 80-90 (set via the Quality slider) is the reliable default for photos, while PNG — which disables the quality slider since it's always lossless — is better for headers with crisp typography or logos.

On the Profile picture preset, a toggle overlays a circular safe-zone guide on the square canvas so you can verify your face or logo isn't cut off by X's circular avatar crop before you download. Toggle it off any time to preview the plain square image.

Pick the Header/banner preset (1500×500), use Contain fit with a background color that matches your profile theme if your source photo isn't already 3:1, and export as JPG at quality 85-90 to keep the file light while the top of your face or logo stays fully visible.

The Square post image preset is 1080×1080 (1:1) for feed posts that need to look identical whether viewed on X or repurposed on Instagram. Vertical post image is 1080×1350 (4:5 portrait) and takes up more scroll space on mobile, which helps quote cards and portrait photography stand out. Card image (small) is 800×418 — a lighter-weight option at the same 1.91:1 link-preview ratio as the large 1200×628 card, useful when you want a smaller file for the same crop.

Yes, both presets output the exact same 1600×900 (16:9) pixel dimensions — the split exists purely to label your workflow. Pick Single post image when exporting an organic in-feed photo and Ad image when the same file is headed to a Promoted post in Ads Manager, so your exports stay organized by purpose. Fit, background, format and quality all behave identically between the two presets.