You go through the branding process. You work with a designer to bring your logo and materials to life. Everything is complete, and all you need now is the final files. You are, however, at a loss at this point. You’re not sure what to ask for and make sure you get. You know a bit about a JPG, but what are all of those other file types they keep rambling about? What do you need? Where are they used? If you’re working with a designer who won’t provide these, you should run for the hills. Only work with designers who provide a vector version, especially for branding materials. Vector files are the number one choice of print shops, and are a mission critical raw file format. A vector file is file made up of lines. Those lines never get pixelated and are able to be scaled to any size no matter how big or small. The .ai file type is the rawest of raw. It’s the file containing the original lines in a controllable and modifiable format in various layers. From this center point, all of the other file types are exported. This is the file format most often requested by print shops. The PDF reigns king as a vector file format. The EPS was the PDFs predecessor. Nowadays, this format is dying off and is mostly reserved for old vector graphics using the format. You’re able to export EPSs from Adobe Illustrator, but I don’t recommend using it as a viable file type unless you hear differently from a printer. An SVG produces shapes with CSS point language. This means that you can utilize them for advanced website design needs. Here’s an example of a map on a travel website. Each country is its own individual graphic with its own ID to trigger unique pop-up boxes. Also, CSS effects are able to be added to each one (note the hovers). You most likely won’t utilize this file type unless you’re working with an example like above. For printing purposes, stick with PDF. You’ll utilize these file types most prominently on websites and platforms (social media, profiles, etc.) When it comes to website design, file size matters. Anything over 800kb is too big to be placed on a website page and will slow down page load. Slow page load equals less search-engine optimization (SEO) power, as well as a higher bounce rate (people getting impatient and leaving). The image bannering this blog post is a light-weight JPG. A JPG is easily able to losslessly compress large files with a high-quality output. This means the file size is small and lean, but the final product is gorgeous. Other website graphics (logos, designed items) are up in the air. If you export the graphic with the highest-quality possible, you’ll most likely be OK. Just make sure the file size isn’t to big. Portable Network Graphics (PNGs) are high-quality file formats. The biggest advantage that they offer for online usage is their transparent backgrounds. This makes them ideal for usage on websites where a transparent background is required (as long as they aren’t too large). Another key advantage of the PNG is that it’s a lossless quality file. This means that it won’t get grainy or blurred when uploaded or utilized (like pixelated file types). The main difference is that GIFs support basic animations. You’ve seen a lot of these floating around. Here are a few just for fun: TIFFs are kind of similar to JPGs. The difference is that they never get compressed out of the box and so they can often be much, much larger than their JPG counterparts. You have the option to losslessly compress them down the road, but again, no compression elements are introduced without your consent. Another differentiator between TIFF and JPG is the depth of the file itself. TIFFs are able to achieve a much deeper bit-channels. In special cases you might require more or different file types. In these special cases, your designer should communicate what those are, what they are and how they should be utilized. Source.