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. I've saved a few hundred K per image using this technique. Download your new image as a PNG file with a transparent background to save, share, or keep editing. Upload your image to remove the background in an instant automatically. For best results, choose an image where the subject has clear edges with nothing overlapping. The JPEG stores the color info (better compressed than PNG) and the PNG is reduced to 8-bit alpha so its considerably smaller. How to make an image background transparent. The browser's Canvas does the work of making the 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. Just wanted to add that GIF "transparency" is more like missing pixels.
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