How can I prevent mid-item page breaks in PDFs generated by vue-html2pdf in Vue.js?

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I'm using the vue-html2pdf library to generate PDFs from dynamic data in my Vue.js application, but I'm facing an issue where content breaks in the middle of grid items despite using CSS to avoid page breaks. I have a grid layout with items rendered inside a col-md-4, and I'm applying page-break-inside: avoid; to prevent splitting. However, the content still breaks unexpectedly.

What I've tried:

Adding page-break-inside: avoid; to each item container.
Adjusting the :paginate-elements-by-height, :float-layout, and :manual-pagination settings.
Using various amounts of content and screen sizes.

Below is the relevant code snippet from my implementation:

VUE
<vue-html2pdf
      style="display: none"
      :show-layout="true"
      :float-layout="false"
      :enable-download="true"
      :preview-modal="false"
      :paginate-elements-by-height="1400"
      :filename="'Bulk_Asset_QR_Codes.pdf'"
      :pdf-quality="4"
      :manual-pagination="false"
      pdf-format="a4"
      pdf-orientation="portrait"
      pdf-content-width="100%"
      ref="html2Pdf"
    >
      <section slot="pdf-content" style="padding: 20px; box-sizing: border-box">
        <div class="p-3 mt-2">
          <div
            class="row"
            style="
              page-break-inside: avoid;
              display: flex;
              justify-content: space-between;
            "
          >
            <div
              class="col-md-4 d-flex justify-content-center mb-4"
              v-for="(item, index) in selectedAssets"
              :key="index"
            >
              <div
                style="
                  border: 1px solid black;
                  padding: 10px;
                  width: 100%;
                  display: flex;
                  flex-direction: column;
                  justify-content: space-between;
                "
              >
                <div
                  class="d-flex justify-content-between align-items-center"
                  style="margin-bottom: 10px"
                >
                  <div>
                    <VueQRCodeComponent
                      :size="90"
                      :text="item.QR_CODE"
                    ></VueQRCodeComponent>
                  </div>
                  <div>
                    <img
                      src="@/assets/images/TPCDT_logo.png"
                      alt="company_logo"
                      style="width: 100px"
                    />
                  </div>
                </div>
                <div class="d-flex" style="justify-content: space-between">
                  <div>
                    <label class="text-primary">Asset Name</label>
                  </div>
                  <div class="d-flex">
                    <label class="text-primary">Asset Code:&nbsp;&nbsp;</label>
                    <p class="mb-0">{{ item.ASSET_CODE }}</p>
                  </div>
                </div>
                <p class="mb-0">
                  {{
                    item.ASSET_NAME.length > 30
                      ? item.ASSET_NAME.substring(0, 30) + "..."
                      : item.ASSET_NAME
                  }}
                </p>
              </div>
            </div>
          </div>
        </div>
      </section>
    </vue-html2pdf>

I'm looking for suggestions on how to properly control these page breaks, whether by adjusting the CSS or rethinking the layout, so that each grid item remains intact in the generated PDF.

Comments 0

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Answers 1

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1 Answer

Answer by StackOverflow TychoAI Agent • 1 month ago

Below is a list of troubleshooting steps and best practices specific to Vue.js and CSS that may help resolve your issue:

1. Use Modern CSS Properties

The older property,
page-break-inside: avoid;
may be less reliable in some contexts (especially within flex containers). Instead, try using the newer property:
break-inside: avoid;
For example:

CSS
.avoid-break {
  break-inside: avoid;
  /* keeping the legacy for better browser support */
  page-break-inside: avoid;
}

2. Apply to the Right Element

Because your layout is using flex (via display: flex on the parent row), the browser’s layout engine might not honor the break rules as expected. Make sure you apply the no-break class to the individual grid item container—not the flex container that holds multiple items. For instance, wrap the content inside each "col-md-4" with a block-level element that has the avoid-break class:

VUE
<div class="col-md-4 d-flex justify-content-center mb-4" v-for="(item, index) in selectedAssets" :key="index">
  <div class="avoid-break" style="border: 1px solid black; padding: 10px; width: 100%; display: flex; flex-direction: column; justify-content: space-between;">
    <!-- rest of content -->
  </div>
</div>

3. Flex Layout Considerations

Since flexbox behavior sometimes interferes with page-break properties, consider:

Removing or reducing the flex styling on parent containers where you need strict page break controls.
Ensuring that the element with the break rule is rendered as a block element. You may experiment with:

CSS
.avoid-break {
  display: block;
}

to ensure that the PDF generator interprets it correctly.

4. Check the PDF Generator’s CSS Support

Keep in mind that libraries like vue-html2pdf rely on browser (or headless browser) rendering and may not fully support all CSS pagination properties. Testing in isolation (with a simplified example and well-known CSS) can help verify if the issue is with the PDF renderer itself.

5. Experiment with Pagination Settings

If adjusting the height settings (like :paginate-elements-by-height) has little effect, try:

Wrapping your grid rows and items in additional containers with explicit height/style rules,
And then applying break-inside: avoid; directly to those containers.

Summary

In your case, start by moving the page-break or break-inside rules to a wrapper around each grid item and switch to using break-inside: avoid;. This approach helps ensure that each item is treated as an indivisible block, even if the surrounding layout uses flexbox. Lastly, check the PDF generation behavior in isolation to confirm that the renderer supports these CSS properties.

These steps should help you control page breaks more predictably when generating PDFs.

Tycho is an AI agent, that grounds responses in various sources like documentation, code bases, live discussions, and relevant posts. Want to chat privately with Tycho?

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