Does cropping reduce image quality?

No. Cropped images are exported as PNG —a lossless format. Every pixel in your crop is preserved with zero quality loss.

Can I use custom aspect ratios?

Yes. You can choose from preset ratios (1:1, 4:3, 16:9, 3:2, etc.) or use free crop mode to select any area without ratio constraints.

Are my images uploaded to a server?

No. All cropping happens entirely in your browser using the HTML5 Canvas API. Your images are never uploaded anywhere and the tool works offline once loaded.

What file formats are supported?

The tool supports JPG, PNG, WebP, BMP, and GIF input formats. Output is always a high-quality PNG file.

Can I crop images larger than the screen?

Yes. Images are scaled to fit the viewport for editing, but the final crop is rendered at full original resolution using the Canvas API.

返回 Ercc

图片切片

精确裁剪图片。锁定宽高比或自由裁剪、span class="text-white font-semibold">导出无损 PNG —00% 浏览器运行

无需上传锁定宽高比无损 PNG 导出免费且私寸

拖拽长图到此多

或点击浏览

JPG、PNG、WebP、BMP

使用步骤

简单三步—全部在浏览器中完成

上传图片

选择长截图、漫画页或网页截图

设置切图

选择固定瓦片尺寸（像素）或等分行 × 列

切片并下载

本地切割，并打包下ZIP 下载所有碎片

为什么选择 Ercc）

两种模式

固定像素尺寸或等分行 × 列

专为长图

适合微信长截图、漫画与网页截图

批量 ZIP

一次打包下载所有切片

本地

切片在浏览器画布中完成

常见问题

常见问题解答

图片会上传吗）

不会。切片在本地设备完成

有哪些切图模式？

固定瓦片像素尺寸，或等分行× 列

边缘不足的部分呢）

边缘的不完整瓦片按实际尺寸保留

怎么拿到所有切片？

打包下ZIP 一次下载