Jiyan Journal Companion / 隐私
极研期刊助手隐私政策
极研期刊助手（JiYan Journal Companion）是极研 / JiYan Research 科研产品家族的一部分。运营主体为绵阳市君时安医疗科技有限公司。本页保留 0.1.0 的隐私范围，单独说明各版本新增的处理范围。
0.1.0：期刊信息查询
政策原文更新：2026-08-22。读取 PubMed、PMC 和 Google Scholar 页面中公开显示的期刊名称或 ISSN，用于向极阅 Data（JiYue Data）服务查询公开期刊指标和来源信息。
扩展不会上传论文正文、PDF、页面 URL、搜索历史、Cookie、账号信息、机构访问信息或浏览历史。查询请求只包含期刊 ISSN 或规范化期刊名称，以及固定的扩展协议版本。
扩展本地缓存只保存公开指标、匹配键和数据集版本，用于减少重复请求。极阅 Data 服务返回的数据为公开期刊元数据，带有来源、版本和年份标识。
0.2.0：知网与合法开放获取入口
以下内容适用于包含对应功能的版本；0.1.0 尚未包含这些功能。
在原有网站基础上增加中国知网，读取页面公开显示的期刊名称、ISSN 或 DOI。期刊查询仍只使用 ISSN 或规范化期刊名称及固定协议版本。
若页面没有可点的公开全文入口，扩展会把文献 DOI 发给 Unpaywall，以查找合法开放获取副本。该查询只包含 DOI 和产品联系邮箱，不发送页面 URL、标题、期刊名或 PDF。
本地缓存增加 DOI 对应的公开全文链接。可在支持该功能的扩展弹窗清理本地指标与 OA 缓存；清理只删除本机保存的公开信息，不影响远端公开数据。
0.3.0：万方数据与 X-MOL
以下内容适用于 0.3.0 及后续版本，不覆盖 0.1.0 与 0.2.0。
在原有网站基础上增加万方数据（wanfangdata.com.cn）与 X-MOL（x-mol.com）。content scripts 仅读取页面公开的标准文献引用 meta 标签（citation_journal_title、citation_issn、citation_doi）和公开显示的期刊名，用于插入期刊指标标签；页面缺少这些公开标记时不做任何标注。
期刊查询仍只发送 ISSN 或规范化期刊名；合法开放获取查询仍只发送 DOI。设置页与弹窗新增的显示指标、站点开关、标签密度、最近查询与数据集更新角标只写入本地 storage。
0.6.0：五个文献数据库页面适配
以下说明适用于 0.6.0 及后续版本。
新增 Web of Science、Scopus、ScienceDirect、Springer 与 Wiley 页面适配。content scripts 仅读取页面公开显示的期刊名称、ISSN 和 DOI，用于在当前页面显示期刊标识。向极阅 Data 发送的查询字段仅为 ISSN 或规范化期刊名；页面其他内容保留在浏览器本地处理范围内。此版本没有新增 host_permissions。
意见反馈与匿名使用统计
在期刊助手支持页提交反馈无需注册或登录。提交时我们保存：你选择的反馈类别、 填写的内容（最长 2000 字）、可选的联系方式（仅在你希望得到回复时填写）、来源标记、服务器收到的时间。 反馈数据表不保存你的 IP 地址、浏览器 User-Agent、设备标识符或 Cookie。请勿在反馈中填写论文全文、 PDF、账号密码或机构访问资料。
反馈内容仅由运营主体指定的维护人员阅读，用于定位问题和改进产品，不出售、不用于广告。已处理的反馈最长保留 12 个月后删除。如需删除你提交的某条反馈，请发邮件至 info@junshiantech.cn ，说明提交时间并引用反馈中的一段文字，我们核对后删除。由于反馈不绑定账号，无法核对的请求可能无法处理。
为防止滥用，同一网络来源每小时最多提交 5 条反馈；该限制使用来源地址的哈希值，仅保存在服务器进程内存中， 不写入数据库，服务重启后清空。
极阅 Data 服务按天统计各类请求的次数（按日期、接口分组和客户端版本号汇总），用于了解服务使用量和容量， 统计中不含 IP 地址、期刊名称、ISSN 或任何可识别个人的信息。
数据服务前端的 Web 服务器（nginx）依常规记录访问日志，包含访问时间、来源 IP 地址、请求路径和浏览器 User-Agent。日志仅用于故障排查与安全防护，按天轮转，约保留 14 天后删除，不与反馈内容关联使用。
所有版本共同遵循
扩展不出售个人信息，不投放广告，不进行跨站跟踪。不上传论文正文、PDF、搜索历史、Cookie、账号信息、机构访问信息或浏览历史。
可在浏览器扩展管理页移除扩展，以删除全部本地数据。无需上传私人资料来完成清理。
隐私问题与联系
请通过 info@junshiantech.cn 联系维护者，或查看期刊助手支持页。联系时请勿发送论文全文、账号密码或机构访问凭据。
0.2.0 权限说明：storage 用于保存公开信息缓存、显示设置和按状态计数的本地诊断；offscreen 用于通过扩展离屏文档请求同一极阅 Data JSON API，不读取论文全文。 诊断不保存页面 URL 或页面候选标识，不自动上传。
Privacy Policy — JiYan Journal Companion
JiYan Journal Companion （极研期刊助手） is part of the JiYan / JiYan Research family of research tools. It is operated by Mianyang Junshian Medical Technology Co., Ltd. （绵阳市君时安医疗科技有限公司）. This page preserves the privacy scope of 0.1.0 and separately describes the additional processing scope introduced by each version.
0.1.0: Journal information lookup
Policy text updated: 2026-08-22. The extension reads the journal name or ISSN publicly displayed on PubMed, PMC, and Google Scholar pages, and uses it to query the JiYue Data service for public journal metrics and provenance information.
The extension does not upload article text, PDFs, page URLs, search history, cookies, account information, institutional access information, or browsing history. Each lookup request contains only the journal ISSN or normalized journal name, plus a fixed extension protocol version.
The local cache keeps only public metrics, match keys, and dataset versions to reduce repeat requests. Data returned by the JiYue Data service is public journal metadata labelled with source, version, and year.
0.2.0: CNKI and lawful open-access entry points
The following applies to versions that include these features; 0.1.0 does not include them.
CNKI is added to the previously supported sites: the extension reads the journal name, ISSN, or DOI publicly displayed on the page. Journal lookups still use only the ISSN or normalized journal name plus the fixed protocol version.
Where a page has no clickable public full-text entry, the extension sends the article DOI to Unpaywall to find a lawful open-access copy. Unpaywall queries contain only the DOI and the product contact email — no page URL, title, journal name, or PDF is sent.
The local cache additionally keeps DOI-to-public-full-text links. You can clear local metrics and OA cache in the popup of versions that support it; clearing only deletes public information stored on your own device and does not affect remote public data.
0.3.0: Wanfang Data and X-MOL
The following applies to 0.3.0 and later versions; it does not cover 0.1.0 or 0.2.0.
Wanfang Data (wanfangdata.com.cn) and X-MOL (x-mol.com) are added to the previously supported sites. Content scripts read only the page's public standard citation meta tags (citation_journal_title, citation_issn, citation_doi) and publicly displayed journal names to insert metric badges; pages without these public markers get no annotation.
Journal lookups still send only the ISSN or normalized journal name; lawful open-access lookups still send only the DOI. The display metrics, site toggles, badge density, recent lookups, and dataset-update badges added to the settings page and popup are written only to local storage.
0.6.0: Five literature-database page adapters
The following applies to 0.6.0 and later versions.
Page adapters are added for Web of Science, Scopus, ScienceDirect, Springer, and Wiley. Content scripts read only the journal name, ISSN, and DOI publicly displayed on the page, in order to show journal badges on the current page. Queries sent to JiYue Data contain only the ISSN or normalized journal name; everything else on the page stays within the browser's local processing. This version adds no new host_permissions.
Feedback and anonymous usage statistics
Submitting feedback on the Journal Companion support page requires no registration or sign-in. When you submit, we store: the feedback category you chose, the content you wrote (up to 2000 characters), an optional contact address (only if you want a reply), a source marker, and the time the server received it. The feedback table stores no IP address, browser User-Agent, device identifier, or cookie. Please do not include article text, PDFs, account passwords, or institutional access materials in your feedback.
Feedback is read only by maintainers designated by the operator, to diagnose issues and improve the product. It is never sold and never used for advertising. Processed feedback is kept for at most 12 months and then deleted. To delete a piece of feedback you submitted, please email info@junshiantech.cn with the submission time and a quote of part of the feedback text so we can locate it. Because feedback is not tied to an account, requests we cannot verify may not be processable.
To prevent abuse, the same network source may submit at most 5 feedback items per hour; this limit uses a hash of the source address, kept only in the server process memory, never written to the database, and cleared when the service restarts.
The JiYue Data service counts requests per day (aggregated by date, endpoint group, and client version) to understand usage and capacity. These statistics contain no IP address, journal name, ISSN, or any personally identifiable information.
The data service's front-end web server (nginx) keeps routine access logs with access time, source IP address, request path, and browser User-Agent, as usual. Logs are used only for troubleshooting and security, rotated daily, deleted after about 14 days, and never joined with feedback content.
Followed by all versions
The extension sells no personal information, serves no ads, and performs no cross-site tracking. It does not upload article text, PDFs, search history, cookies, account information, institutional access information, or browsing history.
You can remove the extension in the browser extension management page to delete all local data. No private materials need to be uploaded to complete the cleanup.
Privacy questions and contact
Please contact the maintainers via info@junshiantech.cn or see the Journal Companion support page. Please do not send article text, account passwords, or institutional access credentials when contacting us.
0.2.0 permission notes: storage keeps public-information caches, display settings, and status-count local diagnostics; offscreen requests the same JiYue Data JSON API through the extension offscreen document and does not read article text. Diagnostics store no page URLs or page candidate identifiers and are never uploaded automatically.