Convert WEBP to POTM in C# .NET

What is WEBP file format?

WEBP, introduced by Google in 2010, emerged as a viable alternative to popular image file formats like JPG, PNG, and GIF. Its primary objective was to offer web-based graphics with superior quality while ensuring minimal loss during compression. By employing advanced techniques, WEBP achieves both lossless and customizable post-processing compression, making it an optimal choice for reducing file sizes, enhancing loading speed, and facilitating seamless streaming.

Compared to JPEG and PNG files, WEBP images typically boast a remarkable reduction in size ranging from 25 to 35 percent. Consequently, websites equipped with WEBP images enjoy faster loading times, enabling an efficient online experience for all visitors. The format has gained widespread support in contemporary web browsers such as Google Chrome, Microsoft Edge, Mozilla Firefox, Apple’s Safari, and various mobile browsers. However, certain legacy browsers like Internet Explorer have yet to embrace WEBP compatibility.

The exceptional size reduction and quality results offered by WEBP have made it increasingly favored among website developers and designers. As more web browsers adopt this file format, WEBP is expected to become the industry standard for web-based graphics. The ongoing evolution of WEBP solidifies its position as a revolutionary solution that enhances the web experience through smaller file sizes and improved image quality.

What is POTM file format?

A POTM file refers to a macro-enabled presentation template created using Microsoft PowerPoint, a software program used for creating slide show presentations. It includes default images, slide templates, macros, and formatting. POTM files are commonly used by PowerPoint users to create multiple .PPTM files with consistent designs and macro settings.

POTM files offer additional functionality compared to typical presentation files, as they support macros. Macros are script-like functions that automate repetitive tasks within PowerPoint. Users can record macros that can be replayed to perform specific actions and assign them to buttons or keystrokes for convenient execution. To record a macro, users can select View → Macros in PowerPoint.

For general presentation creation, users can save their files as .PPTX or .POTX files. However, if they want to create a template that incorporates macros, they can save their presentation as a POTM file.

It’s worth noting that POTM files were introduced by Microsoft when they released Microsoft Office 2007.

To open a POTM file, Microsoft PowerPoint (2007 or later) is the recommended application for full support of presentation formatting and embedded macros on both Windows and macOS. Alternative applications like Apache OpenOffice Impress, Kingsoft Presentation, and Apple Keynote can also open POTM files, but some formatting and macros may not be fully preserved. For Mac users looking to view a POTM file without editing, Apple Preview (bundled with macOS) or Google Drive, a free cloud storage service, can be used.

Online platforms like Google Slides allow users to upload POTM files for viewing, editing, and conversion. However, it’s important to note that Google Slides does not support macros.

To convert a POTM file, various presentation applications including Microsoft PowerPoint, Apple Keynote, and OpenOffice Impress offer conversion capabilities. In Microsoft PowerPoint for Windows and Mac, users can select File → Save As and choose from formats such as .PPTX, .PPT, .PDF, .ODP, .XPS, .MP4, .WMV, .JPEG, and .PNG to convert the POTM file to their desired format.