Apng maker online12/10/2023 ![]() If you want to closely examine any one of the GIF frames, you can disable the animation and specify the frame number you're interested in. In the options, you can also find a section about GIF frame delays, frame sizes, and frame counts. These options will be used automatically if you select this example. It also locks the width and height aspect ratio so that if you resize it further, the width:height ratio will stay the same. The "Animation Preview" option lets you see the input GIF with the original background and the output GIF with the removed background. This example resizes a PNG pic of purple flowers from 600x400 pixels to 200x133 pixels. This option works only in the browser and illuminates the removal areas using black and white pixels. To see exactly which pixels will be removed and which will remain, you can use the "Alpha Channel Preview" option. For example, the percentage 0% means match just one color and 20% means match 20% of similar color tonality. In this option, you can specify the percentage from 0% to 100%. If the background of your animation has various shades of the same color, you can remove them as well via the shade matching option. Similarly, if you enter a mathematical color value "#0000ff", the program will remove all blue pixels. For example, if you enter the color "yellow", the program will remove the yellow background from the animation. The area that will be removed from the GIF is selected by matching the specified color in pixels of the frames. When the background is deleted, you can download the transparent GIF right away. If your GIF has a single frame (it's static), then it deletes the background from just this one frame. If your GIF is multi-frame (it's animated), then it loops over all frames and deletes the background from every frame. To clearly see the areas that are removed, look at the image with the "Preview Deleted Background" mode turned on.This is a browser-based program that deletes the background color from all GIF frames. The result of removing the background is shown in the second preview window. For example, if it's set to 2 pixels, then 2 pixels at the edges will be made semi-transparent. You can also enter the thickness of the smoothing line. When this option is on, the algorithm will refine the edges of the transparent background. This can be done by activating the "Smooth Edge Line" option. After deleting the background, you can also smooth the pixels along the edges of transparency. Therefore, the "Delete Outer Areas" option can be very useful as it removes only those background areas that are adjacent to the sides, top, or bottom of the PNG. The background is usually located in the upper, side, or lower part of the image, surrounding the central object in the foreground. For example, for the yellow color, similar colors are corn-yellow, butter-yellow, lemon-yellow, and honey-yellow. The similar color shades are all colors in the vicinity of the given color in the color palette. If the percentage is greater than 0%, then pixels of similar color shades are also removed. If the similar color tone percentage option is 0%, then only pixels of a single specified color are removed. ![]() Alternatively, you specify the color in the options using its name, hex code, or RGB code. ![]() You can quickly select the background color to be removed by clicking on a color in the PNG in the preview window. When you choose the background color you want to get rid of in the options, then the algorithm finds and removes all pixels of this color. The program uses a smart color matching algorithm to make the background transparent. The background can be a single solid color, various shades of the same color, or have a mild linear or radial gradient. This browser-based utility removes backgrounds from PNG images.
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