https://bugs.documentfoundation.org/show_bug.cgi?id=172094
Bug ID: 172094
Summary: FILEOPEN: PPTX images with 'asvg:svgBlip' extension
render as blank/white rectangles in Impress
Product: LibreOffice
Version: 25.8.5.2 release
Hardware: x86-64 (AMD64)
OS: Windows (All)
Status: UNCONFIRMED
Severity: normal
Priority: medium
Component: graphics stack
Assignee: [email protected]
Reporter: [email protected]
Created attachment 207074
--> https://bugs.documentfoundation.org/attachment.cgi?id=207074&action=edit
the pptx file, and the render screenshot in libreoffice vs ms-powerpoint
#### **Description**
**Actual Results:**
When opening a PPTX file containing the Microsoft Office 2016 SVG extension
(`asvg:svgBlip`), the images are rendered as large blank/white rectangular
areas in LibreOffice Impress.
**Expected Results:**
LibreOffice should render the SVG content provided in the extension, or fall
back to the standard PNG image (`a:blip`) if the SVG cannot be rendered.
**Technical Context:**
* The problematic shapes are `PICTURE` types covering the whole slide.
* The XML uses the namespace
`xmlns:asvg="http://schemas.microsoft.com/office/drawing/2016/SVG/main"`.
* Removing the `<asvg:svgBlip ... />` block from the PPTX's slide XML allows
LibreOffice to correctly display the fallback PNG image, confirming that the
presence of the SVG extension is what triggers the blank rendering.
* The same file renders perfectly in Microsoft PowerPoint and online viewers.
#### **Steps to Reproduce**
1. Open the attached PPTX file (`large-white-issue.pptx`) in LibreOffice
Impress.
2. Observe slides 1 through 10.
3. Note that instead of the expected content, there is only a large white/blank
area.
#### **Additional Information**
I have attached two screenshots for comparison:
1. `ms-ppt-1.jpg`: How the slide looks in MS PowerPoint (Correct).
2. `white-1.jpg`: How the same slide looks in LibreOffice Impress
(Broken/Blank).
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