![]() ![]() A few people have proposed file formats that embed PNG transparency info into a JPEG's extended information fields, but these proposal's don't have wide support as of yet. This is a neat browser-based utility that converts any color in a Joint Photographic Experts Group (JPG/JPEG) picture or image to a. Upload or drag and drop the images that you want to make background transparent. I've saved a few hundred K per image using this technique. Click on Make Transparent Background Now button to get started. The JPEG stores the color info (better compressed than PNG) and the PNG is reduced to 8-bit alpha so its considerably smaller. The picture in the document immediately changes according to your selection. This guide will cover what you need to do in order to have a transparent background in Illustrator. This is helpful when creating artwork so you can see better, but you might not want it there when its time to save the file. The menu shows thumbnail-sized versions of seven preset transparency options for your picture (0, 15, 30, 50, 65, 80 or 95). 1 By default, Illustrator creates a solid white artboard in the background. (The transparency color of a bitonal image is always the background. On the Picture Tools Format tab, select Transparency. The browser's Canvas does the work of making the image transparent. You can make all pixels of a specific color in a grayscale or color image transparent. Now your web page uses a CANVAS tag to load the JPG as image data and applies the 8-bit greyscale PNG as the Canvas's alpha channel. Basically, you create your image with transparency and then split out the alpha channel (Gimp can do this easily) as a simple 8-bit greyscale PNG. It's a bit too complicated to post details, but Google it. ![]() While a JPEG can't be made transparent in and of itself, if your goal is to reduce the size of very large image areas for the web that need to contain transparent image areas, then there is a solution. I think even the cell phone apps (Pixlr is pretty good and free!) and web-based image editting apps are better. There are many high quality art applications for doing art work. Plus PNG supports highly quality images.ĭon't use "Paint". Using PNG, you can smoothly "composite" images together, which is what you really want. If you use GIF then you will see jagged edges where the background and the rest of the image meet. After you select a color, every instance of it in the image will become fully transparent and take on the color of the background of the slide. Use it to click the color in the image you want to make transparent. Just wanted to add that GIF "transparency" is more like missing pixels. Select Set Transparent Color near the bottom of the menu. ![]()
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