Images

Inline images are rendered as <img class="dw-img"> elements embedded directly inside paragraph runs. All image data is embedded as a base64 data URI — no external files.

HTML representation

<p class="dw-p dw-style-Normal" data-dw-style="Normal">
  <span class="dw-r">Before image — </span>
  <img class="dw-img"
       src="data:image/png;base64,iVBORw0KGgo..."
       data-dw-width="72.0"
       data-dw-height="36.0"
       data-dw-content-type="image/png"
       alt="Chart title"
       style="width:72.0pt;height:36.0pt">
  <span class="dw-r"> — after image</span>
</p>

Attributes

Attribute	Description
src	Base64 data URI containing the full image binary
data-dw-width	Original Word width in points
data-dw-height	Original Word height in points
data-dw-content-type	MIME type (e.g. image/png, image/jpeg, image/gif)
alt	Alt text from Word's image description field

The inline style attribute sets width and height in points so the image renders at its intended size in the browser.

Supported formats

MIME type	Extension
image/png	.png
image/jpeg	.jpg
image/gif	.gif
image/bmp	.bmp
image/tiff	.tiff
image/webp	.webp
image/svg+xml	.svg
image/x-emf	.emf
image/x-wmf	.wmf

Round-trip

When converting back to DOCX, the base64 data is decoded from the src attribute, written to the ZIP's word/media/ folder, and linked via a relationship. The data-dw-content-type attribute determines the file extension used for the media entry.