Marcus Wolfe Posted March 8, 2008 Share Posted March 8, 2008 I go to a website called theotaku.com (it’s just had a remake) to upload pictures I make with Paint. This website only accepts Jpeg files. Some of you may recall that fact from when I asked how to convert BMP to Jpeg. Since then, I have discovered PNG format, which looks better and takes up less space than Jpeg. Problem is, the website does not accept PNG. Would some one please give me the following information:A) What the website administer needs to do to allow the website to accept PNG format.B) Why the website administer might not already have that system in place. Thank you. Link to comment Share on other sites More sharing options...
Septim741 Posted March 8, 2008 Share Posted March 8, 2008 I go to a website called theotaku.com (it’s just had a remake) to upload pictures I make with Paint. This website only accepts Jpeg files. Some of you may recall that fact from when I asked how to convert BMP to Jpeg. Since then, I have discovered PNG format, which looks better and takes up less space than Jpeg. Problem is, the website does not accept PNG. Would some one please give me the following information:A) What the website administer needs to do to allow the website to accept PNG format.B) Why the website administer might not already have that system in place. Thank you. As a general rule, PNG has a lot of features that other files don't have, and they're usually larger than JPEGs. It's the site's fault they won't accept PNG. I'd just go to a different site. JPEGs are lossy, which is why I never use them. Basically, if you save and open them several times they lose quality. Stick with PNG. ;) Link to comment Share on other sites More sharing options...
ResidentWeevil2077 Posted March 8, 2008 Share Posted March 8, 2008 Actually, you're wrong Marcus - PNG (as in "ping"), or Portable Network Graphics, is a lossless (meaning info is not lost during compression) image format, mostly used for website graphics and the like. While I myself like using PNG, it simply is not a viable format for compressed images - JPEG, while it may be a very lossy (meaning info is lost during compression) image format, is much easier to upload, and it has a far smaller file size than PNG. Link to comment Share on other sites More sharing options...
Septim741 Posted March 8, 2008 Share Posted March 8, 2008 Ah, so you would take a small file over a quality image? Link to comment Share on other sites More sharing options...
Marcus Wolfe Posted March 8, 2008 Author Share Posted March 8, 2008 Uh, dudes, you're both wrong:PNG files are smaller than Jpegs. Don't bother arguing otherwise, because right now I am looking at a PNG file that is 35.8kb and the Jpeg version of that file which is 81.8kb. Which brings us to the conclusion that lossless format does not necessarily equate to larger file. Now, about Question A...... Link to comment Share on other sites More sharing options...
Septim741 Posted March 9, 2008 Share Posted March 9, 2008 Uh, dudes, you're both wrong:PNG files are smaller than Jpegs. Don't bother arguing otherwise, because right now I am looking at a PNG file that is 35.8kb and the Jpeg version of that file which is 81.8kb. Which brings us to the conclusion that lossless format does not necessarily equate to larger file. Ah, yes, but as I said, PNG has features. Say you have Interlacing, and you save the Background Color, Gamma, Creation Time, Layer Offset, and Creation Time with the PNG, even with the compression at maximum the PNG file is 20mb, while the original JPEG is 1.75mb. I hate to make you eat your words like this. I told you so. EDIT: To back up my point, allow me to quote Wikipedia: JPEG JPEG (Joint Photographic Experts Group) files are a lossy format (in most cases). The DOS filename extension is JPG, although other operating systems may use JPEG. Nearly all digital cameras have the option to save images in JPEG format. The JPEG format supports 8 bits per color – red, green, and blue, for 24-bit total – and produces relatively small file sizes. The compression when not too severe does not detract noticeably from the image. But JPEG files can suffer generational degradation when repeatedly edited and saved. Photographic images may be better stored in a lossless non-JPEG format if they will be re-edited in future, or if the presence of small "artifacts" (blemishes), due to the nature of the JPEG compression algorithm, is unacceptable. JPEG is also used as the image compression algorithm in many Adobe PDF files. ... PNG The PNG (Portable Network Graphics) file format is regarded, and was made as, the free and open-source successor to the GIF file format. The PNG file format supports true color (16 million colors) whereas the GIF file format only allows 256 colors. PNG excels when the image has large areas of uniform color. The lossless PNG format is best suited for editing pictures, and the lossy formats like JPG are best for final distribution of photographic-type images because of smaller file size. Many older browsers do not yet support the PNG file format, however with the release of Internet Explorer 7 all popular modern browsers fully support PNG. The Adam7-interlacing allows an early preview even when only a small percentage of the data of the image has been transmitted. http://en.wikipedia.org/wiki/Image_file_formats Link to comment Share on other sites More sharing options...
Marcus Wolfe Posted March 9, 2008 Author Share Posted March 9, 2008 Hmmm........I was overlooking those features when measuring the size of the PNG. Well, that's that then; I guess I'll just keep using PNG for storing things and JPEG for uploading them. But sometimes, especially the when I use text, those blemishes can really ruin my pictures. Link to comment Share on other sites More sharing options...
kungfubellydancer Posted March 9, 2008 Share Posted March 9, 2008 Actually, I think with PNG you can have transparent layers, like GIF. I never used PNG but when made in the proper program a GIF can have invisible sections of an image, instead of there being visible pixels on the entire surface of an image like Jpeg. However GIF only allows 256 colors, but can be animated as well (like these smileys here). I don't think PNG limits to 256 colors, but they don't animate either. Correct me if I'm wrong. Link to comment Share on other sites More sharing options...
xenxander Posted March 9, 2008 Share Posted March 9, 2008 True, but also GIFs can contain viruses so be alert, while JPGs and PNGs can't. *shrugs* also PNG is photoshop compatible - IE it will save layers and such to make it revertable into a photoshop format which is very nice, especially when you work a lot with photoshop. Link to comment Share on other sites More sharing options...
Septim741 Posted March 9, 2008 Share Posted March 9, 2008 PNGs do have transparency, but Internet Explorer won't show transparency in PNGs. In FireFox, or any other browser, PNGs with transparency work perfect, except the transparency shows up as plain white in IE. The opposite side, GIFs, have a certain number of colors allowable per image (255), and partial transparency won't work. So you have limited number of colors (low quality with large images) and you can't have pixels that represent 50% opacity, or whatever. It's just a matter of choosing. Link to comment Share on other sites More sharing options...
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