But if your dimensions are too small, you risk compromising the quality. If your file size is too large, your photos won’t load very quickly and your visitors will lose their patience, plus search engines like Google will not hold your site in high regard. But if you want your photos to load quickly, for your website for instance, I would recommend finding a positive balance between file size (mb, kb) and dimensions (pixels). Most photo sharing sites like Facebook and Flickr will accept higher resolution photos and convert them to a format that works well on their platforms. The size of the images you are posting to the web can have an effect on how those images are viewed. The most popular image format that holds an alpha channel is the. The main benefit is that the format allows you to add graphics on top of other graphics without having a “white box” around it. I included a comparison below (the checkerboard symbolizes a transparent background) that hopefully helps you understand what I mean. All colored image formats hold values for red, green and blue channels that make up the entire color spectrum, but certain formats offer the ability to retain an additional layer of transparency or “alpha channel” that is built into the file. In my role as a video producer and motion graphic artist, I almost always am dealing with a bunch of different image formats. Compatibility with web services and third party image editors are where these formats fall short. Proprietary formats usually have a larger file size and maintain full quality of the original image. It’s best to use these formats when you plan on editing the original project at a later time, since they maintain all of the original layers and editable properties. This is in contrast to an open file format that can be published and used by anyone. These formats are typically controlled by a company and the restriction of their use is for their own benefit. svg.Ī proprietary format refers to a file format created by a company, organization, or individual. If you are a Camtasia or Snagit user, you may have noticed that some callouts are in vector form, they can be scaled without losing quality. In other words, raster art cannot be scaled beyond 100% without losing quality and vector art does not use pixels and therefore is resolution-independent. Raster art is made of a certain number of pixels and vector art is based on mathematical calculations. Other common terms that you may have heard before in regards to image formats are vector art versus raster art. jpeg, which allows you to choose the amount of compression, and therefore the file size and quality, that you want. I always recommend editing and saving your photos in a lossless format, but when it is time to export them for the web I would use a common lossy format such as. The most popular lossless image formats are. It’s not uncommon to come across both types when you are looking at photos on the web. And lossless images, which store an exact pixel-by-pixel representation of the image, but in doing so, require more space. Lossy images, which can be described as image formats that do not store a perfect copy of the original image and thus have smaller file sizes. The main difference between all of these image formats comes down to two things: compression and compatibility.Īll of the files I mentioned previously fall into two main categories. Other more advanced image editors (such as Adobe Photoshop) offer additional formats like. TechSmith Snagit will present you with options such as. Common Image File TypesĪfter you are done editing, you save it and you are prompted with a window that asks you what type of file would you like it saved as. The topics I am going to cover are how file types differ, common web sizes, vector versus raster art, and digital versus optical zoom. But, which image file formats do you need? In my role as a video editor, I deal with graphics, videos, and images on a daily basis and have learned a lot about which ones work best for specific situations. You’ve grabbed the perfect screen shot or taken a photo, done a little editing, and now you need to get it out to the world.
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