Don't "Accept" image/webp EN
jscher2000 · Firefox
This extension removes image/webp and/or image/avif from the list of formats Firefox tells sites that it accepts. That discourages many servers from replacing JPEG and PNG images with WebP/AVIF. (But some may send them anyway; they aren't blocked.)
<all_urls>），意味着它可以读取你在任意站点的页面内容，包括已登录的页面。这是许多扩展正常工作的必要条件，但也值得你确认来源可信。
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简介
Firefox usually sends websites an indicator that it can handle WebP-format and AVIF-format images, and this may encourage sites to send images in those formats. This extension strips out one or both indicators from requests (more specifically, the Accept header) so sites are more likely to send JPEG and PNG format images.
Due to reported problems, Version 0.8 adds the option to exempt a site, and Patreon is exempted by default.
Version 0.9 automatically exempts Reddit images if you're running the "Load Reddit Images Directly" extension to resolve a conflict between the two. Please let me know if you discover any other extension conflicts.
Notes:
(1) Although broad permission is needed for this extension to modify the Accept header, no data is read from requests, responses, or web pages.
(2) This extension monitors and edits request headers using the onBeforeSendHeaders API. There is a possibility of a conflict with other extensions that use the same API, which can lead to inconsistent results for both extensions.
(3) Version 0.9 now checks whether to have conflicting extensions involved (currently only "Load Reddit Images Directly").
Note: since Firefox 68, users cannot directly edit the network.http.accept.default preference, so if you found an old solution of removing image/webp from that preference, you've found the right new workaround.
Don't "Accept" image/webp 是做什么的
Don't "Accept" image/webp 是一款面向 Firefox 的影音图像类扩展，主要用来处理图片、调节音量、增强播放器功能。官方对它的介绍是：This extension removes image/webp and/or image/avif from the list of formats Firefox tells sites that it accepts. That discourages many servers from replacing JPEG and PNG images with WebP/AVIF. (But some may send them anyway; they aren't blocked.)在Firefox 附加组件商店（AMO）上，它当前版本 0.9，评分 4.3（156 人评价），约 20,447 名用户。
适合什么人用
从功能定位看，Don't "Accept" image/webp 更适合经常在网页上看视频、听音乐或处理图片的用户。如果你平时只是偶尔遇到相关需求，用浏览器自带功能也能凑合；但如果这件事每天都发生，装一个专门处理它的扩展通常比手动操作省事得多。需要注意的是它作用于所有网站，装上后建议先观察一两天，确认不影响常用站点的正常使用。
怎么安装 Don't "Accept" image/webp
- 打开Firefox 附加组件商店（AMO）上的官方页面；
- 点「添加到浏览器」并确认权限提示；
- 装好后在扩展列表里固定图标，方便随时开关。
本站只做索引与介绍，安装包来自官方商店。如果商店页面提示当前地区不可用，说明该扩展未在你所在区域上架。
常见问题
Don't "Accept" image/webp 是免费的吗？
Don't "Accept" image/webp 在Firefox 附加组件商店（AMO）免费提供下载。它是浏览器扩展，装上就能直接用，不需要注册账号。
Don't "Accept" image/webp 安全吗？
它只申请了 0 项权限，范围比较克制，没有申请「读取所有网站数据」这种大权限。
Don't "Accept" image/webp 支持哪些浏览器？
当前收录的版本来自Firefox 附加组件商店（AMO），适用于 Firefox。同一个扩展在其他商店可能有对应版本，但功能与版本号不一定相同。
怎么卸载 Don't "Accept" image/webp？
在扩展管理页找到 Don't "Accept" image/webp，点移除即可。它在本地保存的设置会一起清掉，不会残留数据。
权限清单 来自 manifest.json 原文
站点访问 1
<all_urls>
接口权限 5
activeTabmanagementstoragewebRequestwebRequestBlocking