OptiPNG is the next level PNG optimizer after ImageOptim. This is safe to do for PNGs and I’ve yet to see a PNG image that looks off by removing metadata.
Strip color profile imageoptim download#
PNGīefore you need to download anything, you should strip PNG metadata in ImageOptim. JPG is a lossy format in general, but a very in-depth analysis of JPG compression quality shows that there is effectively zero difference in visual quality, but significant savings in file size. Worried about Retina displays? Check out level 4 for more details.Īnother tip: Reduce image quality for JPGs down to 80% by default. If you have an image that is 512x512 pixels, but the image is only being used in a 64圆4 canvas, scale down that image. With regards to image sizing, use the correct image size. So which should you choose? JpegMini handles both lossless and lossy compression and allows you to resize your images. There are additional options for JPGs in ImageOptim preferences, such as removing metadata, but I’ve found that removing color profile metadata actually colorizes images to include a bit more greens and yellows. If you’ve already run a JPG through ImageOptim, you’ll have to download another piece of software. We’ll break this down for the 3 major image types (and if you aren’t using one of these three, make sure you check out the next step): At this point, you’ll have to make specific fixes for each image type. The next level requires a little more work, but even more savings. It only takes a few minutes to run and provides potentially big savings in size without a reduction in quality. That is why running ImageOptim should be a no-brainer. And the smaller the image, the less your browser has to download to retrieve from the server where the image is hosted. Removing lossless data does not affect the visual quality of your images, but it can drastically reduce their size. This is exactly why lossless compression is so important. What you may not realize is that this kind of metadata makes up a very large part of the image’s total size. That metadata is lossless, and if you were to run lossless compression on that JPG photograph, it would strip out this and dozens of other metadata fields.
In fact, the term lossless refers to the ability to reconstruct the original data from the compressed data without losing any information needed to render that data.įor example, did you know that a photo can store the name of the author of that picture? That comment might be useful in protecting the copyright of the photographer, but it has zero effect on what your application will look like to the world. In the context of this blog, useless data refers to anything that doesn’t contribute to the visual quality of the image being displayed. ImageOptim will scan every image within a folder you select, and automatically compress the image, removing all of the useless data. This tiny application is your new best friend. The first thing you should do is grab a copy of ImageOptim. Which is why it’s important not to skip any steps. Simply completing one level will do more for your performance than the next level. This can take hours, if not days, depending on how image-heavy your content is.Įach level provides diminishing returns. The fourth level requires all of the previous steps as well as its own set of tasks. The first level requires the least amount of work (which can be accomplished in minutes). Each level builds off of the previous one, so be sure to complete level 1 before moving onto level 2. There are four major levels of effort required to reduce the size of image data. So if the bulk of a site is images, we should be focusing on image optimization before we focus on things like database indexing, caching, or other more advanced forms of performance optimization. The average page size is 1.88 MB, with the majority of that weight coming from images. In fact, it’s so easy, anyone on your team, regardless of coding experience, can make a dent in improving performance. The fastest way to increase the performance of any site is to losslessly compress images that are being displayed. What baffles me is how easy it is to fix this. All I have to do is check out DevTools to see that most images are way too large.
The funny thing is, every single day I’m visiting new sites to try out a new product or read a blog, and I find the same performance issues over and over again.
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