Better Cardmarket Charts - by Matras EN
Matras · Firefox
Cardmarket Chart Extension enhances Cardmarket product pages with clearer, more meaningful charts — powered by community data.
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简介
This extension replaces the default chart on Cardmarket product pages with bigger, more detailed price and availability charts. Works for Magic, Yu-Gi-Oh!, Pokémon, One Piece, Lorcana and Riftbound.
What does it show?
📈 1-day, 7-day and 30-day average price with one value per day. No more gaps, even for cards nobody has looked at in months.
📦 Number of available items over time
🔢 Sales estimate: how many copies were probably sold on a given Day. This is an estimate based on how the available count changes, not an official number.
⏱ 30 days, 90 days, 1 year or everything
🌙 Dark mode, following the Cardmarket setting
Optional features
✅ Community data sharing (on by default): sends the number of available items of the product pages you open, together with the product ID. Nothing else.
✅ Background sampling (off by default): additionally collects the available count for cards in the background while you browse, at most once a minute.
Both can be switched on or off in the popup at any time.
Privacy
No account needed
No tracking, no cookies, no user ID
The only thing ever sent is the product ID and a number of available items
Prices are not read from your browser
Not affiliated with Cardmarket.
Better Cardmarket Charts - by Matras 是做什么的
Better Cardmarket Charts - by Matras 是一款面向 Firefox 的外观主题类扩展，主要用来更换浏览器配色、给网页加深色模式、调整界面观感。官方对它的介绍是：Cardmarket Chart Extension enhances Cardmarket product pages with clearer, more meaningful charts — powered by community data.在Firefox 附加组件商店（AMO）上，它当前版本 2.0.1，约 33 名用户。
适合什么人用
从功能定位看，Better Cardmarket Charts - by Matras 更适合长时间对着屏幕、希望降低眼睛负担的用户。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。
怎么安装 Better Cardmarket Charts - by Matras
- 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
Better Cardmarket Charts - by Matras 是免费的吗？
Better Cardmarket Charts - by Matras 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。
Better Cardmarket Charts - by Matras 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。
Better Cardmarket Charts - by Matras 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 Better Cardmarket Charts - by Matras？
在扩展管理页找到 Better Cardmarket Charts - by Matras，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
接口权限 1
storage