PNG files are highly compressed, while JPEGs are a better format for images with many colors. Both PNG and JPEG are commonly used compression schemes for Web images, but you will likely need to try both to see which generates the smallest size. Click on "Edit" then "Undo" or press "Ctrl-Z."Ĭlick on "File" and "Save As" to bring up the save dialog.Ĭlick "Select File Type (By Extension)" to choose the format for your image. As with all changes to your image in GIMP, you can revert to an earlier state of the image if you're unsatisfied with the new look. Select "Generate optimum palette" on the Indexed Color Conversion menu and click "Convert." The "web-optimized palette" can occasionally be useful if you want to try it. #OPTIMIZE IMAGES FOR WEB PHOTOSHOP FULL#This will change the image from RGBA indexing to RGB by removing the alpha channel, which isn't normally used on Web images.Ĭlick on "Image" then hover your mouse over "Mode" and change the mode to "Indexed." Instead of using a full palette of colors, you can save space by using only 256. Once this is all done, just hit the save button at the bottom, and remember to name your file something different to the original so you can tell which one is the optimised version.Click on "Image" then "Flatten Image" if available. The good thing about it is that Photoshop makes it easy for you to play around with the settings, so you can also look into the number of colours and diffusion levels too! In this case the GIF file has a slight compromise on colour, so it may be worth selecting the PNG or Jpeg and playing around with the quality and dither settings.ĥ. You can fine-tune size with ‘dithering’ for PNGs and GIFs. If you have a jpeg that is just slightly too low in quality, but a much better compromise than your other files, you can use the ‘quality’ slider on the right to fine-tune. Finally, once you have a preset you are happy with (or close to happy with), you can edit it further to suit your needs. It’s up to you where to find the balance between each, with the file size (listed beneath each picture) and the quality (in the preview box).Ĥ. Here it is clear that Jpeg quality wins over GIF or PNG, but this varies depending on the picture you are optimising. For example, below, we have a text-based image (in point 4) and a photograph – in each case, the best file type differs. This will give you a basic idea of which file type may suit your image best, but it’s always good to try each one out quickly to confirm which looks best in practice. As a rule of thumb, PNGs are good for images that have text in them. However, it still tends to be a bigger file size than Jpeg when compressed. It frequently gets PNG files 50-80 smaller without any loss in quality. For best results, always run PNG files through. If you export a PNG from Canva or Photoshop, your images will be 2-4 times larger than necessary. PNG is an increasingly popular file option, as it has more colour options than GIF, and tends to maintain quality better with resaves than Jpeg. The Best Way to Optimize PNGs By default, most PNGs come out too large.It is best used for smaller images, or simpler images like icons or logos. GIFS tend to be bigger in size, and look lower in quality when compressed.They are the default image file type online. Jpegs are easy to compress whilst maintaining decent image quality.On the right-hand side, Photoshop has a handy set of presets you can choose from, with Jpeg, GIF and PNG file types at different quality levels. This will make it easier for you to compare the original to the different options. Once you’ve opened the panel, make sure to select ‘ 4-up’ to make sure you have a preview of your image in different formats. Here we are using a newer version of Photoshop, but once the optimisation window is open, the process is the same.Ģ. Or (if you’re on a newer version of Photoshop) File → Export → Save for Web (legacy).Depending on your version of Photoshop, this will be located either under: Optimising your images for the web with Photoshop:ġ. The end result is high quality images, that do not affect the time it takes for the pages on your website to load. To do this you’ll need to look at image file type and quality adjustments. Optimised images are web ready, and compressed to retain their quality without eating great chunks of data. Optimising them means that the overall dimensions can be reduced without compromising the quality of the image. Most images are captured in very high, print-ready quality, making them large in terms of footprint. Optimising those same images will reduce the overall size of your page, which in turn, helps it to load quickly and keeps your visitors happy – ideally you want them to be below 100kb. Images are data heavy and can slow down the speed at which your website loads. Note: There are various different facets to image optimisation – if you want a breakdown of everything, check out our full guide to optimising images. Our simple step by step guide will help you optimise images for web. Photoshop is a great tool when it comes to reducing your image files sizes. Optimising your images can be really important to speed up your page load speed, especially if you have a web page with lots of images.
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