diff --git a/files/zh-cn/web/media/formats/image_types/index.md b/files/zh-cn/web/media/formats/image_types/index.md
index 8c0e334575444c..3a2aad3c38f35c 100644
--- a/files/zh-cn/web/media/formats/image_types/index.md
+++ b/files/zh-cn/web/media/formats/image_types/index.md
@@ -36,7 +36,7 @@ slug: Web/Media/Formats/Image_types
AVIF |
- AV1图像档案格式 |
+ AV1 图像档案格式 |
image/avif |
.avif |
@@ -256,31 +256,26 @@ APNG 适用于无需与其他活动或音轨同步的基本动画,如进度指
### AVIF 图像
-AV1 Image File Format (AVIF) is a powerful, open source, royalty-free file format that encodes _AV1 bitstreams in the High Efficiency Image File Format (HEIF) container._
+AV1 图像文件格式(AVIF)是一种功能强大、开源、免版税的文件格式,它在高效图像文件格式(HEIF)容器中对 AV1 比特流进行编码。
-> **Note:** AVIF has potential to become the "next big thing" for sharing images in web content.
-> It offers state-of-the-art features and performance, without the encumbrance of complicated licensing and patent royalties that have hampered comparable alternatives.
+> **备注:** AVIF 有可能成为在 web 内容中共享图像的“下一件大事”。它具有最先进的功能和性能,却没有阻碍同类替代产品发展的复杂许可和专利使用费的束缚。
-AV1 is a coding format that was originally designed for video transmission over the Internet.
-The format benefits from the significant advances in video encoding in recent years, and may potentially benefit from the associated support for hardware rendering.
-However it also has disadvantages for some cases, as video and image encoding have some different requirements.
+AV1 是一种编码格式,最初设计用于在互联网上传输视频。该格式得益于近年来视频编码技术的长足进步,并有可能受益于对硬件渲染的相关支持。不过,在某些情况下它也有缺点,因为视频和图像编码有一些不同的要求。
-The format offers:
+该格式可以提供:
-- Excellent lossy compression compared to JPG and PNG for visually similar compression levels (e.g. lossy AVIF images are around 50% smaller than JPEG images).
-- Generally, AVIF has better compression than WebP — median 50% vs. 30% compression for the same JPG set (source: [AVIF WebP Comparison](https://www.ctrl.blog/entry/webp-avif-comparison.html) (CTRL Blog)).
-- Lossless compression.
-- Animation/multi-image storage (similar to animated GIFs, but with much better compression)
-- Alpha channel support (i.e. for transparency).
-- _High Dynamic Range_ (HDR): support for storing images that can represent bigger contrasts between the lightest and darkest parts of the image.
-- Wide Color Gamut: Support for images that can contain a larger range of colors.
+- 与 JPG 和 PNG 相比,在视觉上相似的压缩水平下,有损压缩效果极佳(例如,有损 AVIF 图像比 JPEG 图像小 50%)。
+- 一般来说,AVIF 比 WebP 有更好的压缩效果。对于相同的 JPG 图像集,中值压缩率为 50%,而 WebP 为 30%(资料来源:[AVIF 与 WebP 的对比](https://www.ctrl.blog/entry/webp-avif-comparison.html)(CTRL博客))。
+- 无损压缩。
+- 动画/多图像存储(类似于 GIF 动画,但压缩效果更好)
+- 支持 Alpha 通道(即透明)。
+- *高动态范围(HDR)*:支持存储图像,使图像最亮和最暗部分之间的对比度更大。
+- 宽色域:支持包含更大色彩范围的图像。
-AVIF does not support progressive rendering, so files must be fully downloaded before they can be displayed.
-This often has little impact on real-world user experience because AVIF files are much smaller than the equivalent JPEG or PNG files, and hence can be downloaded and displayed much faster.
-For larger file size the impact can become significant, and you should consider using a format that supports progressive rendering.
+AVIF 不支持渐进式渲染,因此文件必须完全下载后才能显示。这通常对真实世界的用户体验影响不大,因为 AVIF 文件比同等的 JPEG 或 PNG 文件小得多,因此下载和显示的速度也快得多。文件大小越大,影响就越大,因此应考虑使用支持渐进式渲染的格式。
-AVIF is supported in Chrome, Opera, Safari and Firefox (Firefox supports still images but not animations), but not on Edge or IE.
-As support is not yet comprehensive (and has little historical depth) you should provide a fallback in [WebP](#webp_image), [JPEG](#jpeg_joint_photographic_experts_group_image) or [PNG](#png_portable_network_graphics) format using [the ` |