@bhav,
Thank you for posting your requirements. Unfortunately, I was unable to do this using Aspose.Slides for .NET.
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-45154
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.
@bhav,
New GetSubstitutions methods will be added in Aspose.Slides for .NET 25.11. These enhancements let you obtain information about fonts that will be replaced when rendering the specified slides.
/// <summary>
/// Gets the information about fonts that will be replaced during rendering of the specified slides.
/// </summary>
/// <param name="slides">An array of slide indexes for which to retrieve font substitution information, starting from 1.</param>
/// <returns>A collection of all font substitutions (<see cref="FontSubstitutionInfo"/>) for the specified slides.</returns>
IEnumerable<FontSubstitutionInfo> GetSubstitutions(int[] slides);