Our program lets you immediately see the result of transparency and frame skip optimization methods in the browser's GIF preview windows. You can use one of the methods or multiple methods at once. You can enable or disable each of the optimization methods in the options. If you skip every second frame, the GIF file size can be reduced by 40%. This optimization method is very effective. When skipping frames, the duration of the GIF does not change because the optimizer increases frame delays of the remaining frames to preserve the original GIF duration. For example, "1, 3, 6", which means skip frames one, three, and six, or "2-10", which means skip all frames from the second to the tenth. You can also delete specific frames that you enter. You can skip every 2nd, 3rd, 4th, or nth frame starting from any frame. The skip-frame optimization changes the number of frames in a GIF. This method is less efficient than transparency optimization but a value of 10 - 30 pixels creates visible a result. A larger sampling radius introduces tiny errors in the quantizer that leads to better optimization. The quantizer optimization changes the pixel sampling radius of the quantizer. Usually, it is sufficient to enter a small similarity threshold value of 1% - 5% to obtain good optimization results. Pixel similarity is defined via the threshold option. If the pixels in the next frame are the same (or very similar) to the pixels in the current frame, then they are made transparent in the next frame and as a result, they are skipped. The transparency optimization compares pixels frame by frame. There are several optimization techniques that we have implemented: transparency optimization, quantizer optimization, and frame-drop optimization. Optimizing a GIF has many benefits – it uses less computer memory and loads much faster in the browser because there is less data to decode. This is a browser-based program that optimizes GIF animations.
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