

A GIF graphic is unable to have more than 256 colors but it can have fewer colors, down to the minimum of two (black and white). The idea is to lessen the amount of colours in a GIF image to the minimum number necessary and to therefore remove stray colors that are not required to represent the image. GIFs are able to hold multiple bitmaps of up to 256 colors each, using LZW (Lempel Zev Welch - a simple form of file compression that removes inefficiencies in the data storage without losing data or distorting the image) compressed raster data to minimize file sizes. The GIF file format was invented by Compuserve for their online service, but they made the specifications publicly available. It uses the lossless data compression technique which reduces the file size without any impact on the quality.

It also supports animations and whenever you see a logo or other sharp edged line art then you are probably dealing with the GIF format. This file format supports up to 8 bits per pixel therefore giving an image the ability to contain 256 distinct colours chosen from the 24-bit RGB colour space. The GIF file format is a type of bitmap image and has become popular due to the growth of the internet.
Animated gif powerpoint mac update#
Also, you could try to update PowerPoint to the latest on Mac and check whether the issue exists. Does the issue exist in a specific document or all the documents You could create a new document to test. Any sounds in audio or video clips is irrelevant as far as animated GIF exports are concerned. You could upload the GIFs in your reply via clicking the Insert Image button. You can also add video clips, but the exported animated GIFs will only show the video part. Now create your slides, and add animations and transitions as needed. That’s because we want to set the aspect ratio proportions. So, why are we even making any changes in this dialog box. It’s important to note that it really does not matter what exact Width or Height you type in the boxes of the same name, because PowerPoint only creates animated GIFs in four heights (240, 480, 720, and 1080 pixels) and just uses the proportionate widths. You can choose between Standard (4:3) and Widescreen (16:9) options, or you could choose the Custom Slide Size option, which brings up the Slide Size dialog box that you can see in Figure 2, below.

Doing so will bring up the Slide Size drop-down menu you can see in Figure 1, below. You can change these proportions by accessing the Design tab on the Ribbon, and then clicking the Slide Size button. If you are creating a new presentation from scratch for the animated GIF, make sure that your PowerPoint slide proportions are exactly what you want.
