图片转换器

Image format guide

Choosing the right image format can significantly impact file size and quality. JPG/JPEG is best for photographs and complex images — it achieves small file sizes through lossy compression. PNG is ideal for graphics, logos and screenshots with transparency — it uses lossless compression. WebP combines the best of both: smaller than JPG and PNG, with support for transparency and animation.

AVIF is the newest format, offering even better compression than WebP, but browser support is still growing. HEIC is Apple's format used on iPhones — converting to JPG makes files compatible with all devices.

常见问题

是免费的吗？

是的，图片转换器 完全免费。无需账户，无水印，无文件大小限制。

我的文件安全吗？

您的文件通过加密的 HTTPS 连接上传，并在下载 1 小时后从我们的服务器自动删除。我们绝不存储、共享或分析您的文件。

我一次可以处理多少个文件？

每个文件最大 25 MB · 最多 10 个文件. 对于更大的批量，您可以逐个处理文件。