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HOW-TO GEEK BOOKSRead our first book, the HTG Guide to Windows 8, or check our upcoming books. Enter your email below to get exclusive access to our best articles and tips before everybody else. As we keep building on old image technology, types of file formats keep piling up, each with their own nuances and uses. These formats have become the most popular because of their compatibility with modern browsers, broadband speeds, and the needs of average users. JPG was a filetype developed by the Joint Photographic Experts Group (JPEG) to be a standard for professional photographers. JPGs have become the de facto standard image of the internet because they can be compressed so much. The Joint Photographic Experts Group developed lossless JPG technology to combat this serious problem of quality degradation. It is possible to download plugins that allow users to open and save the lossless JPG2000, and some programs, like Apple’s Preview application, can read and save JPG2000 directly out of the box.
GIF, like JPG, is an older filetype, and one generally associated with the internet as opposed to photography. Apart from support for transparency, GIF also is supports animations, limiting every frame to 256 preselected colors.
While GIF is not lossy like JPG, conversion to 8-bit color distorts many images, using dither filters to optically blend, or “diffuse,” colors, similar to halftone dots or pointilism. Because of this non-lossy format, GIF can be used to keep tight lines on typography and geometric shapes, although these things are better suited to vector graphic files like SVG or the Adobe Illustrator native format, AI. PNG stands for Portable Network Graphics (or, depending on whom you ask, the recursive “PNG-Not-GIF”). In addition to being an excellent format for transparency, the non-lossy nature of 24-bit PNG is ideal for screenshot software, allowing pixel for pixel reproduction of your desktop environment. From left to right, these files are: 24-bit JPG Compressed, 8-bit GIF, 8-bit PNG, Full Quality 24-bit JPG, and 24-bit PNG. PNG is the largest image type for bigger images, often containing information you may or may not find useful, depending on your needs. GIF is largely a novelty and only useful for animation, but can produce small 8-bit images. JPG is still the king for photographs and photo-like images on the internet, but be careful, as your file can degrade with every save. Image of Keizersgracht, in Amsterdam by Massimo Catarinella via Wikipedia, released under Creative Commons license.
Eric Z Goodnight is an Illustrator and Graphics Geek who hopes to make Photoshop more accessible to How-To Geek readers.
I am pleased to hear that you intend to write a future article that will include details on TIFF and RAW formats. Finally, I believe you should discuss tradeoffs between picture quality and image size in relation to images on websites.
I’ve done a little programming with file formats and images and have a rough understanding of how they work, but I did some testing before posting. It wolud be intresting to se how would BMP, SVG or Googles WebP do if added to the comparisson?
BMP is simply an uncompressed image and unless dealing with an application limitation, there’s never a reason to use it over PNG at the very least. I had read about about the animations with PNG, but personally, I’m not terribly interested. DID YOU KNOW?A Charlie Brown Christmas, the fifth studio album of jazz group the Vince Guaraldi Trio and named after the Christmas special it served as a soundtrack for, is a triple platinum best selling album. Disclaimer: Most of the pages on the internet include affiliate links, including some on this site. Here you'll learn about hottest apps & software, visit top destinations on the Net, and laugh at our funny discoveries.


Join us as we take a detailed look at each format, and cover the strengths and weaknesses of each. Like the method ZIP files use to find redundancies in files to compress data, JPGs compress image data by reducing sections of images to blocks of pixels or “tiles.” JPG compression has the unfortunate side effect of being permanent, however, as the technology for the file was created for storing large photographic image files in surprisingly small spaces, and not for photo editing. Even the highest quality setting for JPG is compressed, and will change the look of your image, if only slightly.
However, because of dial-up speeds and general lack of interest in high quality non-degrading files, the JPG-LS standard never caught on.
GIF stands for “Graphics Interchange Format” and employs the same lossless LZW compression that TIFF images use. An important note is that Grayscale images are by nature an 8-bit palette, so saving them as GIF is fairly ideal.
This can radically alter an image for the worse, or, in some cases, be used to create an interesting effect. It was developed as an open alternative to GIF, which used the proprietary LZW compression algorithm discussed earlier. They are also non-lossy files, compressing photographic images without degrading image quality. When he’s not headbanging to heavy metal or geeking out over manga, he’s often off screen printing T-Shirts. Your comment about antialiasing causing blurring of sharp lines in JPGs is particularly interesting and useful. I’m sure there are engineers and absolutely brilliant people that could talk about these formats in terms way over my head.
I’d have to dig in and do some more research to have specific things to say about those topics and roll them into another article. However, since you mentioned GIF’s animation capability, I must also bring to the table APNG (Animated PNG). I think it’s good that people are doing these things and pushing the envelope, but I think the times are few and far between when something useful is done in an animated image. My criticism is very small and doesn’t change the relative advantages of each format for a particular task, though I use 8 bit png files instead of gif because the better palette range. There may be apps to capture mobile pics in formats other than JPG, or at least, it should be possible.
The answer you have given is somewhat correct, but maybe someone who has worked on the mobile software may know the ins and outs of it.
Graphics Interchange Format or GIF images express feelings so easily that even instant messenger smiles are made as GIFs.
Particularly back in the days of dial-up internet, JPGs were the only viable way to send image information. JPG is also not an ideal medium for typography, crisp lines, or even photographs with sharp edges, as they are often blurred or smeared out by anti-aliasing. It’s also important to note that Grayscale JPGs do not compress nearly as much as color ones do. This technology was once controversial (for patent enforcement issues) but has become an accepted format since all patents have expired. PNG is an excellent filetype for internet graphics, as it supports transparency in browsers with an elegance that GIF does not possess. PNG tends to be the biggest of the three filetypes and isn’t supported by some (usually older) browsers.
Neither are optimal options for photography, as JPG is much smaller than lossless PNG with only minimal loss of quality. Their smaller file size and wider acceptance among all browsers make them superior to PNG in some instances. I think GIF images will not be with us for much longer, simply because PNG does transparency better, JPG does photographs better, and there are superior file formats for line art, text, etc that are not 8-bit color. More people should learn how to create and use thumbnails on their websites to allow optional higher quality displays thru links, javascript, etc.


Originally, when Pacific Bell was not owned by SBC, 768kbps was a guaranteed minimum, with my speed being up to 1.4Mbps when traffic was light.
After doing some better testing, I was surprised that erasing a pixel increased the file size ~10%; fading a block of the image increased the file size ~15%. I try to speak to different audiences with different articles, and this one was intended to have some sophisticated info that people would find interesting but could still easily understand. I had assumed that the inclusion of the Alpha channel was something intrinsic to PNG, and that it was part of the reason the files were larger. Still, I do agree, GIF will probably become largely useless and we’ll start seeing dancing baby PNG files one of these days! The artifacts in jpg files are not from antialiasing, but essentially the Gibb’s Phenomenon, as seen when reproducing a square wave with a bandwidth limited receiver and the Fourier series is truncated. In mobile cameras (say 2M, 3M pixel) the image we take is saved automatically as JPEG image, although the quality can be adjusted and size as well. But it is possible it’s only a software issue, and therefore correctable with a different photoshooting app.
Today, we’ll learn how to make a GIF out of photos and a YouTube video without any software installations. What is potentially worse, is that this loss can accumulate—saving multiple versions of artwork can cause degradation with every save. They are largely out of date, useful only to create dancing babies or to sometimes create rough transparencies. And for storage of high resolution files, JPG compresses to tiny proportions, with quality loss only visible on close inspection. PNG usually is the better choice because it creates better results for those types of images at only slightly worse file sizes.
I don’t think they can hold more color information as each pixel in each channel has 8 bits in a 24 bit color space. More browsers either have a hack add-on you can download or will soon support APNG directly. But I wonder why they have gone great extend to build many inlays, effects, timers, modes, etc in a mobile camera when they didnt give the option to save it in required format. Even so, it is common to see these things saved as JPG, simply because the filetype is so ubiquitous. Regarding the transparency layer, the PNG format is efficient enough to compress solid and simple pattern transparency to a few kilobytes and full gradient transparency to ~20% of total size. I changed that line to something that makes more sense and I appreciate you pointing it out. Wiki says it means that qualities of the original are lost, and that it’s an IT term for the most part. Luckily, few photographers attempt to shoehorn the interesting features of their subjects into precise pixel boundaries. This is because if it automatically saves in JPEG the original pixels are lost and cannot be recovered. I suppose they might have given it atleast in some cameras or we may not know the proper operations. I know that latter it can be converted into any format, but the loss is introduced already and no use converting it. All images should have the same dimensions (height and width), otherwise black bars will be added to smaller images or they will be stretched to fit the bigger ones. However, public image are complicated to delete.To sum it up, MakeaGif is a great substitute for Gifninja.



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Comments to «Best free video gif maker»

  1. 08.02.2015 at 18:31:16

    Elnur_Suretli writes:
    Animation course by way of Skype spread over about the Blender video.
  2. 08.02.2015 at 11:36:36

    Killer_girl writes:
    Make decent color grading a pipe dream structure your.