不会。所有处理都使用 WebAssembly 在浏览器中进行。您的图像永远不会离开您的设备。

目前该工具一次调整一张图像的大小。上传每个图像并单独设置所需的尺寸。

将图像放大到超出其原始尺寸可能会降低清晰度。缩小规模可以保持质量。该工具使用高质量的重采样算法。

JPG、PNG 和 WebP 格式。输出保持与输入相同的格式。

Enlarging beyond the original resolution may reduce sharpness. For best results, avoid upscaling more than 2x the original dimensions.

Yes. Enter exact pixel dimensions. Common sizes: Instagram post (1080x1080), Facebook cover (820x312), YouTube thumbnail (1280x720).

Yes. It works on any device with a modern browser. All processing happens locally without uploading your images anywhere.

Yes. Lock the aspect ratio and the tool will automatically calculate the other dimension when you change width or height.