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IguanaTex is a PowerPoint add-in which allows you to insert LaTeX equations into your PowerPoint presentation on Windows. It is distributed completely for free, along with its source code. This repository hosts the source code in a form that can be easily tracked, shared and discussed.

An extension which lets you enable LaTeX on any website. TeX All the Things offered by emichael. MathJax Plugin for Github.
IguanaTex is a PowerPoint plug-in which allows you to insert LaTeX equations into your PowerPoint presentation. It is distributed completely for free. The third is via MyTeXPoint. From the homepage: Free simplified version of TeXPoint. Partly compatible with the original TeXPoint. It has integrated screenshot tool to copy equations and pictures.
Use Mentimeter directly in your PowerPoint presentation. Create fun and interactive presentations with Mentimeter, making your audience engaged and energized. With this plugin you can add the power of Mentimeter directly to your PowerPoint presentation. The plugin is for Windows PowerPoint 2016, and you need an Office 365 account to download it.

You can use PowerPoint add-ins to build engaging solutions for your users' presentations across platforms including Windows, iPad, Mac, and in a browser. You can create two types of PowerPoint add-ins:

Use content add-ins to add dynamic HTML5 content to your presentations. For example, see the LucidChart Diagrams for PowerPoint add-in, which you can use to inject an interactive diagram from LucidChart into your deck.
Use task pane add-ins to bring in reference information or insert data into the presentation via a service. For example, see the Pexels - Free Stock Photos add-in, which you can use to add professional photos to your presentation.

PowerPoint add-in scenarios

The code examples in this article demonstrate some basic tasks for developing add-ins for PowerPoint. Please note the following:

To display information, these examples use the app.showNotification function, which is included in the Visual Studio Office Add-ins project templates. If you aren't using Visual Studio to develop your add-in, you'll need replace the showNotification function with your own code.
Several of these examples also use a Globals object that is declared beyond the scope of these functions as:var Globals = {activeViewHandler:0, firstSlideId:0};
To use these examples, your add-in project must reference Office.js v1.1 library or later.

Detect the presentation's active view and handle the ActiveViewChanged event

If you are building a content add-in, you will need to get the presentation's active view and handle the ActiveViewChanged event, as part of your Office.Initialize handler.

Note

In PowerPoint on the web, the Document.ActiveViewChanged event will never fire as Slide Show mode is treated as a new session. In this case, the add-in must fetch the active view on load, as shown in the following code sample.

In the following code sample:

The getActiveFileView function calls the Document.getActiveViewAsync method to return whether the presentation's current view is 'edit' (any of the views in which you can edit slides, such as Normal or Outline View) or 'read' (Slide Show or Reading View).
The registerActiveViewChanged function calls the addHandlerAsync method to register a handler for the Document.ActiveViewChanged event.

Navigate to a particular slide in the presentation

In the following code sample, the getSelectedRange function calls the Document.getSelectedDataAsync method to get the JSON object returned by asyncResult.value, which contains an array named slides. The slides array contains the ids, titles, and indexes of selected range of slides (or of the current slide, if multiple slides are not selected). It also saves the id of the first slide in the selected range to a global variable.

In the following code sample, the goToFirstSlide function calls the Document.goToByIdAsync method to navigate to the first slide that was identified by the getSelectedRange function shown previously.

Navigate between slides in the presentation

In the following code sample, the goToSlideByIndex function calls the Document.goToByIdAsync method to navigate to the next slide in the presentation.

Get the URL of the presentation

In the following code sample, the getFileUrl Heavier7strings 7 stringed. function calls the Document.getFileProperties method to get the URL of the presentation file.

Create a presentation

Your add-in can create a new presentation, separate from the PowerPoint instance in which the add-in is currently running. The PowerPoint namespace has the createPresentation method for this purpose. When this method is called, the new presentation is immediately opened and displayed in a new instance of PowerPoint. Your add-in remains open and running with the previous presentation.

The createPresentation method can also create a copy of an existing presentation. The method accepts a base64-encoded string representation of an .pptx file as an optional parameter. The resulting presentation will be a copy of that file, assuming the string argument is a valid .pptx file. The FileReader class can be used to convert a file into the required base64-encoded string, as demonstrated in the following example.

Create accessible PowerPoint slides

Note: This will not create PowerPoint slides in which the math can be read by VoiceOver on an iOS or macOS device.

Issues:

There are several issues that factor in to creating PowerPoint slides that are easily readable by screen readers (primarily NVDA):

With NVDA, you'll need both MathPlayer and MathType for the screen reader to read equations. Neither is required by JAWS, but more work is required on your part for creating slides that JAWS can read.
Unfortunately there is no such thing in PowerPoint as an inline object, objects being things such as MathType equations. Thus inline MathType equations are problematic, regardless of whether they’re intended for sighted viewers or sight-impaired viewers. The equation editor Microsoft includes with PowerPoint does allow true inline equations, but those are not accessible.
That being the case, it's best if you can avoid inline equations to the extent possible, and stick with display equations. If you're not familiar with the terms inline equation and display equation, an inline equation is what its name suggests. It's an equation that's part of your paragraph, and there is text before and sometimes after the equation. A display equation is in a paragraph of its own, sometimes centered on the line. Since there's no text to sequence with a display equation, specifying the order in which they are to be read is easier.
Since MathType equations are 'floating' on a PowerPoint slide, they are not read in sequence with the text of a slide 'placeholder' (the part of the slide where you type text). Thus, if you use the normal 'visual' method of typing text, leaving empty spots for the equations, and move the equations into position later, NVDA will not read the equations with the text. It will likely read all of the text first, then all of the equations next. It will be difficult if not impossible to understand a slide read in this manner.
PowerPoint allows you to add alt text to graphics, including MathType equation objects. If you're reading the slide with JAWS, that's what JAWS will read. Trouble is, with NVDA, it sees the alt text and also understands the content of the MathType equation itself. Thus, in design view (edit view), NVDA will read each equation twice. In Presentation view, JAWS will read the alt text and NVDA will look inside the MathType equation and read the MathML contained therein, resulting in the equations each being read once, regardless of which editor you use.
These things considered, it seems best to create a PowerPoint file that works as well as it can for a specified screen reader.

Latex Plugin For Powerpoint