Facebook Cover Photo Size Guide & Resizer
Solve the mobile vs. desktop Facebook cover photo mismatch. Preview safe boundaries so your business logo and contact information never get cropped.
Drop your cover graphic to verify its aspect ratio and test whether mobile viewing will crop critical text.
Get an exact PNG canvas template with mobile crop zones and profile picture safe margins pre-calculated.
如何使用此工具 – Facebook Cover Photo Size Guide & Resizer
Upload Your Cover Photo
Drop your brand graphic, landscape photo, or event artwork into the cover template.
Position Artwork in Safe Area
Use desktop (820x312) and mobile (640x360) boundary guides to protect important content.
Download Optimized Cover
Export a crisp, retina-ready cover graphic that looks stunning on every device.
核心功能亮点 – Facebook Cover Photo Size Guide & Resizer
100% 浏览器本地计算隐私
您的文件绝不上传至任何外部服务器。所有计算均在您的本地设备上完全离线处理。
极速本地处理
采用 WebAssembly 和 HTML5 Canvas 架构,免除漫长上传等待,即刻生成结果。
画质无损保留
高精度重采样算法,保持图像与文档原本的清晰细节。
多文件批量操作
支持一次添加多个文件进行同步处理,显著提高工作效率。
永久免费且无使用上限
无需注册登录,绝无水印添加,支持每日无限制免费批量使用。
多端全面兼容
手机、平板、Mac 和 Windows 系统均可直接在网页端流畅使用,无需安装应用。
常见问题解答
上传的文件会被保存在服务器上吗?
此在线工具是否完全免费?
支持哪些常见文件格式?
支持的最大文件大小是多少?
可以在手机浏览器中使用吗?
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Instagram Post Size Guide & Resizer
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图片尺寸调整
按像素尺寸、百分比或社交媒体预设调整 JPG、PNG、WebP,保持画面清晰不失真。