I was to see Mr Ruan Yifeng’s article also added at the bottom of the ‘document information’, so it imitated it, the effect can be seen at the bottom of this article document information.

1. Add Document Information Page

Add doc_info.html in layouts/partials

{{ $lang := .Site.Language.Lang }}
<div class="doc-info-container">
  <div class="doc-info-meta-info">
    {{ if eq $lang "zh" }}
    <h4>文档信息</h4>
    <p>版权声明 : 自由转载-非商用-非衍生-保持署名 (<a href="{{- .Param "licenseLink" -}}" target="_blank">{{- .Param "licenseName" -}})</a></p>
    <p>发表日期 : {{ .Date | time.Format "2006-01-02" }}</p>
    {{ with .Params.UpdateDate }}
    <p>更新日期 : {{ . | time.Format "2006-01-02" }}</p>
    {{ end }}
    {{ else }}
    <h4>Document Information</h4>
    <p>License : <a href="{{- .Param "licenseLink" -}}" target="_blank">{{- .Param "licenseName" -}}</a></p>
    <p>Published Date : {{ .Date | time.Format "2006-01-02" }}</p>
    {{ with .Params.UpdateDate }}
    <p>Last Updated Date : {{ . | time.Format "2006-01-02" }}</p>
    {{ end }}
    {{ end }}
  </div>
</div>

2. Add CSS style

Add doc_info.css in assets/css/extended

.doc-info-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    background-color: var(--code-custom-block-bg);
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  }
  
  .doc-info-meta-info {
    line-height: 1.5;
  }
  
  .doc-info-meta-info h4{
    padding-bottom: 10px;
    border-bottom: 2px solid var(--custom-border-color);
  }

  .doc-info-meta-info p {
    margin: 5px 0;
  }

  .doc-info-meta-info p::before {
    content: "▪";
    color: #666;
    margin-right: 8px;
    font-size: 20px;
}

3. Adjust single.html

Adjust single.html under themes/PaperMod/layouts/_default.

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  {{ if .Param "showDocInfo" }}
  {{ partial "doc_info.html" . }}
  {{ end }}

  <footer class="post-footer">

4. Adjust hugo.yaml

Under params add

  1. showDocInfo: true
  2. licenseLink
  3. licenseName
params:
  showDocInfo: true # The default display is "Document Information"
  licenseLink: "https://creativecommons.org/licenses/by-nc/4.0/"
  licenseName: "CC BY-NC 4.0"

5. About use

5.1 showDocInfo

DocInfo is added at the end of each article (.md) by default, if you don’t want to show it, just set showDocInfo to false in Front-Matter.

# Example
showDocInfo: true

5.2 updateDate

Update date is not shown by default, if you want to show it, just add updateDate: yyyy-mm-dd to Front-Matter.

# Example
updateDate: 2025-04-29