# 让将 Discourse 安装为 PWA 更加容易

**URL:** <https://meta.discourse.org/t/making-it-easier-to-install-discourse-as-a-pwa/158034>\
**Category:** Feature\
**Created:** [2020 年7 月 17 日 13:24 UTC](https://meta.discourse.org/t/making-it-easier-to-install-discourse-as-a-pwa/158034 "2020-07-17T13:24:54Z")\
**Posts on this page:** 1\
**Showing post:** 23

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作者： ![jamie.wilson](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/jamie.wilson/32/185466_2.png) [@jamie.wilson](https://meta.discourse.org/u/jamie.wilson)\
发布日期： [2021 年2 月 25 日 21:33 UTC](https://meta.discourse.org/t/making-it-easier-to-install-discourse-as-a-pwa/158034/23 "2021-02-25T21:33:34Z")

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> <https://github.com/discourse/discourse/commit/70050a8ba365628394fbf7597daf75891328d991>
>
> \`convert\_to\_jpeg!\` is only called if \`convert\_png\_to\_jpeg?\` and/or \`should\_alter…\_quality?\` is true.
> 
> \`convert\_png\_to\_jpeg?\` can be disabled by setting \`SiteSetting.png\_to\_jpg\_quality\` to 100.
> 
> However, \`should\_alter\_quality?\` could be true if \`SiteSetting.recompress\_original\_jpg\_quality\` was lower than the quality of the uploaded file, regardless of file type.
> 
> This commits changes \`should\_alter\_quality?\` so that uploaded png files will use the \`SiteSetting.png\_to\_jpg\_quality\` value, rather than \`\`SiteSetting.recompress\_original\_jpg\_quality\` value.

您遇到了一个已知（尽管比较冷门）的 Bug，上述提交已修复该问题。不过，该提交尚未包含在 Discourse 的稳定版本中。

\_临时\_将 `recompress original jpg quality`（重新压缩原始 JPG 质量）设置为 100，应可阻止转换发生。

（……或者，您可以尝试降低导出 PNG 的质量，使其低于 `recompress original jpg quality` 设置的值。）

请务必在上传徽标后将该设置恢复为之前的值！

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_[View the full topic](https://meta.discourse.org/t/making-it-easier-to-install-discourse-as-a-pwa/158034)._