Media) based on your website template width, or on your blog layout/width): Then regenerate all past thumbnails, and then, finally, do a bulk optimization of your entire Media Library. Let Exclaimer help. Whenever you upload an image, it also generates 3 other image sizes alongside your original: thumbnail (150×150 with cropping), medium (max 300×300 without cropping), large (max 1024×1024 without cropping). And neither do users. Always use an image optimizer tools/plugins (usually using a lossy method – not lossless). Choosing a quality WordPress theme can do all this for you. Otherwise, if you’re only displaying images in a portfolio or a blog post, never use images at their maximum dimensions. Uploading new (similar) images can also get out of control quickly, over-crowding your site’s Media Library. On mobile devices, images get resized by the browser anyway, and that 1500px size is enough to look crisp on smartphones with high-PPI “retina” screens too. The fastest and easiest way to see your email file size is… to use Litmus! Test and re-test your site’s speed. This can happen at two different stages: After exporting images on your computer, make sure they look well there before uploading them to the site. In each week’s email, Jay will recap what happened in digital, what trends are important for marketers to watch, plus some fun surprises that you’ll just have to sign up to see! While the browser is responsible for resizing the image to fit its container, it still has to download the full file from the server, taking up more time and bandwidth. If you're finding that your photo uploads are taking longer than normal, follow these troubleshooting steps. Typically, an email goes through two or more SMTP servers before it gets to the recipient's inbox. Along with including alt text and background colors for images, there are a few other image formatting tips to keep in mind for optimal email design: Optimize image size. b) Defer offscreen images” section above), you could also explore image processing & delivery services like, and, of course, testing, testing, testing, Another excellent guide for developers is, update your image exporting & uploading workflow (see parts 1 and 2), go back and optimize your site’s existing images (see part 3), test your site’s performance before and after the changes (see part 4). Hackers can still get access to your original-sized photos from your site’s source code or by taking screenshots on your site. or better yet, use CSS effects wherever possible: filters and blending modes, borders, and outlines, shadows, rounded corners, gradients, simple animations, etc. In other words, a 60 x 60 pixel image is reduced to 40 x 40 pixels. Find out how we have helped organizations from higher education to entertainment, non-profit and Fortune 1000 brands. Menus within emails are trending, thanks to the prevalence of responsive design. With brands steering their way through cutthroat competition and consumers always on the move, targeting and engaing your customers has evolved beyond merely creating responsive emails. Finally, try to keep images to a file size of below 50kb. When the browser resized the images on the site. File type: .jpg, .png or .gif. But how should you resize and compress your photos before uploading them to your site? WebP appears to be the “winning” image file format of the future, and many optimization plugins (listed below) have started supporting it: they can help you automatically generate WebP versions of your images and then automatically deliver them to compatible devices. Keep in mind that the larger the image, the greater the chance an email filter or firewall will block the image. Email: Email Message Attachment Best Practices But keep in mind that to view it, recipients will generally need to have the same program installed that you used to create the attachment. If you're finding that your photo uploads are taking longer than normal, follow these troubleshooting steps. The file of the email signature shouldn’t exceed 15kb (when optimized for web). Once again, most people find 60% – 70% an acceptable compromise between image quality and file size. on individual blog posts, try to limit the number of large images to 10-15, there’s usually no need to have more. 3 guidelines for effective image sizes for email newsletters. Other issues might be affecting your page load speeds: But when it comes to images, don’t forget that it’s also a matter of quantity: you should limit how many images you have on a single page: When an image gets resized, it loses some sharpness. In this detailed guide, I’ll teach you everything you need to know about sizing and compressing images before uploading them to your website, what tools to use, how to test your site’s speed, and much more. from time to time, users would find a way to have it increased to 15MB, 25MB, 30MB for one reason or another. Content is an integral part of email design—it is the context and the copy that drives business from the email campaign. There’s also the “peek and pop” feature in iOS 9 and iPhone 6S, which allows email subscribers to peek at the content of the email from the pre-header section itself without even opening it. The world of email marketing has begun to brace itself for the growth of the smartphone industry, set to reach 2.65 million users by 2019. For guidelines on creating social-media friendly images, check out this Always Up-to-Date Guide. Also known as hamburger collapsible menus, you can find them everywhere these days in responsive mobile websites. For this reason, we recommend using high-quality images and letting Rise 360 prepare them for web delivery. And also Yahoo, hotmail and Gmail wil not except more than 25 MB attachment. The recommended size for listing images is 2000px for the shortest side of the image, and a resolution of 72PPI.. File size limit for the launcher is 50 MB. Implement as many of the image optimization tactics explained above, and you’ll see considerable improvements in the performance tests: Alternatively, you can use this great new performance tool: Page Weight by imgIX. Let’s take this quote I once received from a photographer on this topic: “If the images out of the processing software (e.g. The process includes everything from choosing a familiar “from” name to crafting the perfect subject line and ensuring your email does not look like a spam mail. Find the right quality-to-size ratio. Simply use a good image optimization tool (like the ones mentioned throughout the article) to handle the image compression for you, at the quality level you’re comfortable with (“lossless” for photography perfectionists, “lossy” for everyone else). This website uses cookies to ensure you get the best experience on our website. The larger the image, the longer the email load time. optimize retina (for which you also install the, activate the Retina image optimization in the Advanced tab of the ShortPixel Settings, Determine the pixel dimensions needed, based on your website design (see. Keep images as small as possible without sacrificing quality. But if you have a self-hosted site and just need to showcase your images on the web, following these image optimization best-practices is a must. Start uploading the images to your Media Library. This might require doing some test runs and playing around with the export quality settings, until you’ve found the “middle ground”: a high-enough compression level so that file sizes are small, but not too much compression to start introducing visible artifacts. Only upload images at 1200 pixels (on the longest side) instead of 1500-2000px. Again, the goal is to limit the image usage possibilities for the “thieves”. Similar to the “Efficiently encode images” issue in Google’s test. Also make use of bullets to make your content more visible while using web-safe standard fonts like Arial, Arial Black, Arial Narrow, Comic Sans, Courier New, Georgia, Impact, Tahoma, Times New Roman, and Verdana. So only delete them when you’re sure they are no longer being used anywhere on your site. And that’s all great, website performance is generally taken care of. GIFs in emails with enhanced email client support are now being implemented by email marketers worldwide. Let’s take an individual blog post example: Using the methods described above, you can determine the actual width of the content area by measuring any paragraph of text, for example: Or if you already have images, you can determine what size they’re being resized to by the browser: Alternatively, you could use a browser extension like View Image Info (properties) to get that same info: Armed with that knowledge (825 pixels in this example), you can now double that size to take into account retina screens (so 1650 pixels in width here). First impression may not be the last impression in the world of emails, but it always matters—mainly because user behavior indicates that the maximum chance of emails being opened is only once. Play it safe with a body copy font size of 14 pixels and 22 pixels for title. 1. And with half of your visitors likely using a mobile device, delivering optimal image file formats & sizes is critical. Should I let plugins automatically strip EXIF metadata from my images? Armed with all this image optimization knowledge, let’s now review your site’s performance to see where you stand. To optimize for a small image file size but keep image quality at an acceptable level, set the qlt= value to 80. Only pixel dimensions matter on the web, you can ignore DPI. There’s no set rule on how big or small an email signature should be. The “image-rendering” CSS property aims to allow more control over this process, but browser support is limited. Do I need to size images in three (or more) different ways for people on different size devices? For best results, experiment with various quality settings for your images, and don’t be afraid to dial down the quality – the visual results are often very good and the filesize savings can be quite large. As a best practice, to stay in the middle, set the qlt= value to 85 to stay in the middle. If they’re too soft, you might need to apply some output sharpening (low, standard or high) when exporting them: 2. Use a good image compression service/tool. How are you optimizing your images? Vertical/portrait images can be even smaller, with a maximum height of 1200px (like 800×1200 pixels for a 2:3 vertical image, or 900×1200 pixels for a 3:4 vertical image). For example, if you uploaded an 800px image and your blog template only displays it at, let’s say, 799px, the image will look very blurry. In the absence of a browser on wearable watches, links in the plain text version are specified with grayed out text. Typically an image on the web is between 30kb to 500kb depending on it’s physical size. While PNG and GIF file formats are quite popular, SVG is somewhat of a mystery for most photographers. So it’s crucial to determine image dimensions first, to know how wide your content area is on your site. The page intentionally does a lot of things wrong in order to highlight its problems in testing tools: The Google PageSpeed Insights report outlines some important performance opportunities that you might encounter on your own site: Let’s take them one by one to deconstruct their meaning: In this case, Google is telling you that you shouldn’t upload high-res files to your site and then just display them at a smaller size on the page. They’d load terribly slowly (due to their large file size), and ill-intended people can also steal them from your site. But between 100 and 70-80, the quality difference is unnoticeable, while the difference in image file size is enormous. While the feature allows the subscriber to peek into your email without actually opening it, the challenge for marketers is that it gets acknowledged as “email opened,” possibly setting open rates stats in a tizzy. However, the problem with large email attachment is a bit more involved than setting an upper limit on your Exchange. Check out the, galleries should use pagination to break them down to 25-50 thumbs per page, for main blog index pages, only show blog post excerpts (and featured images) instead of listing the entire post contents (. Then, in our HTML, we use the original, intended display size in the width and height attributes to scale the larger image down: I say “at least” because images probably need to be larger than that to account for high-density “retina” screens in modern devices, so they look extra sharp. Off-topic or inflammatory comments may be moderated. Tracking user (subscriber) behavior and understanding their engagement patterns can be integral to creating and making design adjustments engage, convert, and maximize ROI for your business. Here’s a video I created on how to configure the ShortPixel plugin settings: You can also pay a one-time fee to get a bunch image optimization credits (useful when using their bulk optimizer to go through your existing Media Library). That means that images should only be sized as large as needed by your page layout (see part 1 of this guide). Here are the points that we’ll cover so that you can effectively deliver your email marketing message: File size: Less than 1MB. Social icons on your “thanks for signing up” page. By “image size”, we’re referring to the image pixel dimensions (width and height in pixels), or the image file size (KB or MB). The larger the file size, the longer it will take to load. The tool suggested an image dimension of 335×251 pixels, when in fact we can measure that the site displays it at a larger size. 18. Use this option only when you truly know what you’re doing. learn about important image SEO guidelines: image filenames, ALT tags, captions, EXIF data, etc. Notice how this site’s theme uses the full-scale image in the link (which gets used when opened in the lightbox view/slideshow), and smaller sized image files for smaller screens at different breakpoints. This makes optimization of marketing emails for wearable technology viewing environments all the more important and a strategic decision for businesses nowadays. This will not only reduce file size by 20 percent with no downsides, but also save them five percent on quality. For best results, experiment with various quality settings for your images, and don’t be afraid to dial down the quality – the visual results are often very good and the filesize savings can be quite large. Make your CTA button a minimum size of 44×44 pixels with plenty of white space around it. (source: Google Web Fundamentals – Image Optimization). we have a standard attachment size limit of 10MB. Once you’ve optimized a certain number of images in a month, you’ll have to wait for the next month for the quota to reset. Retina images in emails can be an important strategic decision for your company. Website performance has become an essential SEO and user-experience factor in recent years, as connection speeds have greatly improved. If you don’t use WordPress, you can try other desktop or online tools to “squeeze” your images. “A picture’s worth a thousand words” is especially relevant to the media world. I took high-PPI “retina” screens into consideration when talking about image dimensions (in part 1). They might have a good experience on your homepage, but if then they navigate to a very slow page, they still leave your site. Should I just delete them and upload new ones? Use 2500px if you want a round number :-). For a single image I would say it doesn't really matter... if you have multiple images you're fitting into a template, I'd say CSS. Alt text (alternative text), also known as \"alt attributes\", “alt descriptions\", or technically incorrectly as \"alt tags,” are WordPress then adds some special code to the site to load images in a responsive manner, belling the browser to use the proper image/thumbnail size depending on the screen size: So unless your platform completely doesn’t support responsive images, you should only upload one single image version, and then let your platform, your template/theme, or a plugin do the rest of the work. Image file sizes don’t scale linearly with image size, but quadratically: all else equal, an image that you shrink by half (e.g., take from 1000px square to 500px square) will not have half the file size of its original, but one-fourth the file size. Photos with more color and finer details (like trees/foliage) often naturally have larger file sizes, and setting a hard limit can result in over-compression. Using the chroma flag in qlt= Depending on the number of images in your Media Library, you can get a one-time plan to handle all your images in one go. Even though email design is one of the most underrated aspects of the email marketing process, the impact email design can have on the success of a campaign is immense. Often, cropping can be done in a way that improves the quality of the image. Before diving into image-specific testing tools, know that you can gain a lot of insights from these two popular website speed testing tools: Google PageSpeed Insights and GTmetrix. Thumbnail galleries are special scenarios where you ignore the size of your thumbnails, and instead, make sure images are large enough when enlarged. Part 4 explicitly covers all the image-related page speed “opportunities” listed in Google PageSpeed Insights. This part’s a little tricky, because you want your images to look … For example, an email that was 110KB got caught in the same 7 spam filters as an email with a file size of 650KB. I have over 10 years of experience building photography websites, and I routinely have to find the right balance between creating an impressive visual impact and still crafting a fast & user-friendly website experience. How to determine the correct image dimensions for your website, b) Gallery images (and thumbnails that enlarge in a lightbox view), c). Image file types, quality & compression levels, b) Using PNG/GIF/SVG file types for graphics with solid colors, 4. Assuming that your blog images don’t need a click-to-enlarge (aka “lightbox”) capability, images should be sized depending on the width of that column or content area. Welcome to retina emails! Deleting old images from your Media Library is risky because any references or links pointing to them might get broken. Even though the footer comes at last, it’s not the least—in fact, it’s one of the most significant parts of an email. The recommended size for listing images is 2000px for the shortest side of the image, and a resolution of 72PPI.. Is it enough to only optimize images on the homepage? The resolution of an image dictates its clarity. Here are some strategies for mitigating the risk of image theft: Keep in mind that these are all compromises: you’re increasing protection at the expense of visual impact. Alternatively, a nifty little tool that can quickly analyze and compress your already-published photos is Image Optimization Tool (by WebsiteToolTester), the process is quite simple: 1. For single column templates, your images should be no wider than 600 pixels (an email template’s width). Keep in mind that it’s always a best practice to keep the most important text above the fold, or where your reader can see it without scrolling further. 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