Converting ODP to HTML in C# Produces an Empty Document

Aspose.Slides Product Family
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1

Hello. While using
Aspose.Slides.NET6.CrossPlatform Version=“25.11.0”
(so this reproduces in latest version as well)

We have an .odp file with 2 texts, each one in a span inside another span in content.xml .
sample.7z (14.3 KB)

When we generate HTML using the following code:

var odpFilePath = "sample.odp";
var odpSavePath = "sample.html";
using Presentation presentation = new Presentation(odpFilePath);
HtmlOptions options = new HtmlOptions
{
    SvgResponsiveLayout = true,
    HtmlFormatter = HtmlFormatter.CreateDocumentFormatter("", showSlideTitle: false)
};
presentation.Save(odpSavePath, SaveFormat.Html, options);

The generated HTML is empty, contains no texts at all, and is a blank page.
If the texts are inside just 1 span, all is well from what i tested.
Is this a known bug? From what i can tell, the file is valid and works to be opened in Powerpoint
and is correctly showing the styles of the texts and everything

2

@IBurzoEvoRWS

To keep progress on this scenario (“Converting Odp → HTML empty document Hello. While using Aspose.Slides.NET6.CrossPlatform Version=“25.11.0” (so this reproduces in latest version as well) We have an .odp file with 2 texts, each one in a span inside another span in content.xml . <a class=“attachment” href=”/up…"), start by validating the hypothesis around input.docx: Rendering Issues with FieldEquation Producing Black-Circle White-Number Characters Description: The document contains a specific EQ (FieldEquation) structure, for example: Example field structure: When converting the DOCX to PNG… (source: docs.aspose.com).

This is a best-effort explanation based on partial or unverified information because No retriever returned supporting documents yet and Only low-trust or forum sources were retrieved; please validate it against official documentation once supporting evidence is available.

Checklist / next steps:

  • input.docx (docs.aspose.com): Rendering Issues with FieldEquation Producing Black-Circle White-Number Characters Description: The document contains a specific EQ (FieldEquation) structure, for example: Example field structure: When converting the DOCX to PNG…
  • post-321486_1123463.txt (docs.aspose.com): Rendering Issues with FieldEquation Producing Black-Circle White-Number Characters Description: The document contains a specific EQ (FieldEquation) structure, for example: Example field structure: When converting the DOCX to PNG…
  • /Aspose.WordsforJava.lic (docs.aspose.com): Get Evaluation Note message when generating documents using trial license Dear Support, This is request from Sai Kiran Chebiyyam saikiranchebiyyam@newgensoft.com: As you are aware, we are currently evaluating the 30-day trial version o…
  • Version regression lead (question): Behaviour changed between 25.11.0 → 1; review release notes or rerun with layout refresh disabled to isolate the change.
  • Aspose.Slides.NET6.CrossPlatform usage (question): Inspect recent commits or release notes for changes to this API’s defaults or layout behaviour.
  • content.xml usage (question): Inspect recent commits or release notes for changes to this API’s defaults or layout behaviour.
  • Share these hypotheses with support engineers alongside logs, code samples, and the exact SDK version so they can confirm the behaviour.
  • Question summary: Converting Odp → HTML empty document Hello. While using Aspose.Slides.NET6.CrossPlatform Version=“25.11.0” (so this reproduces in latest version as well) We have an .odp file with 2 texts, each one in a span inside another span in content.xml . <a class=“attachment” href="/up…
3

Not really sure what to make of this reponse

4

@IBurzoEvoRWS,
Thank you for contacting free support. Unfortunately, I was unable to reproduce the problem with Aspose.Slides.NET6.CrossPlatform 25.11.
The output file: output.zip (784 Bytes)

Could you please check the issue carefully again?

5

My apologies, i uploaded the wrong sample file.
Try with this one please:
sample2.7z (14.3 KB)

6

@{username,
Thank you for the sample ODP file. I have reproduced the problem where the text is missing when converting the presentation to HTML. We apologize for any inconvenience caused.

We have opened the following new ticket(s) in our internal issue tracking system and will deliver their fixes according to the terms mentioned in Free Support Policies.

Issue ID(s): SLIDESNET-45213

You can obtain Paid Support Services if you need support on a priority basis, along with the direct access to our Paid Support management team.

1 Like