Posted by Jack Embling ● Apr 15, 2019 3:06:00 PM
Are images ruining your website experience?
Visual content. It’s engaging, it’s impactful, it’s pretty much a requirement for any business website in this day and age – but is yours actually losing you valuable web traffic?
Large photo and video file sizes will slow your website down.
A reported 40% of users abandon sites that take longer than 3 seconds to load. So you can’t afford to let something easy to prevent like large image file sizes cost you business.
The users abandoning your website are represented in your website’s bounce rate figure. Your bounce rate impacts your Google page ranking, so your images really can cost you.
“I was 25 when this webpage started loading…”
We’re not talking image dimensions here (as much as it’s important that these are optimised according to your website design) we’re talking about the number of Kilobytes ‘KBs’ or worse – Megabytes ‘MBs’ – of space they take up.
Think about it. You have a beautiful, show-stopping image as your main header or background on your homepage. You might also have smaller images that showcase the different services or products you provide, with the aim of attracting users and encouraging them to navigate to further pages.
These images all take up physical space on your web page. So when a user visits your page, that data needs time to load.
But every image adds to your load time, so every image file size counts.
If your file sizes are too large, do you know what happens to those beautiful, show-stopping images used to lure prospective clients in? Well, 40% your prospective clients won’t ever get to see them – they’ve already left your yet-to-be-loaded page.
What’s more, 79% of shoppers dissatisfied with a web page’s performance say they’re unlikely to return, and 44% say they’d tell a friend about a bad online experience .
That’s bad for business.
So how do I analyse my web page speed?
Glad you asked.
Google PageSpeed Insights allows you to analyse the performance of your web page on both mobile and desktop. It also provides recommendations as to how you can improve your speed. This is the result for Smithfield Foods:
What was Google’s top suggestion for improvement?
The one downside of PageSpeed Insights is that the ‘How to fix’ sections are really for the tech-savvy and the recommendations for optimising images are code-based.
How can I easily optimise my website images?
There are a number of ways you can do this. Google suggests utilising the ‘Save for Web (Legacy)’ feature in Photoshop.
Let’s choose the simplest way:
- Use the right image formats for web:
.JPG, .PNG, .GIF. The holy trinity. Put your .TIF, .SVGs and the like away. They are not welcome.
- Make sure your image dimensions are suited to your website/CMS
Find out your ideal website dimensions depending on where you are placing your image. E.g. full background or header images are likely to be the full-page width, with featured images in your content likely to be smaller.
You can usually find this information out in your CMS or if you’re using a website design template, it will be in the documentation.
Having images in the right dimensions means your website won’t spend valuable load time trying to resize them to fit their location.
- Once steps 1 and 2 are adhered to, use a free web-based compression tool such as Tiny PNG or Image Smaller.
You simply upload your images into the tools and they remove any unnecessary meta-data and the like, often reducing file sizes by up to 90% !
Tiny PNG even has its own image analyser, which will tell you the number of images it finds on your website, the combined size of these images and then the optimised size, based on the compression Tiny PNG can deliver.
Won’t optimising my images make them look bad?
Let’s try it! So I know that the recommended image dimension for this blog is 801×517 pixels. I found a beautiful image of a lake on pexels.com and in Photoshop, resized it to the required dimensions, exporting it as a .JPG, which you can see below:
The file size for this 801×517 image? 459KB . Well it is beautiful and look at all those colours!
How about this one?
What’s the difference? 69% to be exact. This image – via Tiny PNG – is only 142KB in file size.
Exact same dimensions, exact same beauty. Faster load time.
What’s a good image file size to aim for?
Well, this depends on the number of images on your web page. For a fast loading page, ideally all the images on your page will take up less than 500KB.
Optimising your image file sizes is quick, simple and could ultimately make you money by reducing the number of bounces on your website. In 2018, Google announced the speed of your website will actively affect where you rank in Google page listing results on mobile devices, so it is definitely worth ensuring all images on your website are optimised within the recommended file size.
Want more tips like this? Say hello
 KissMetrics: ‘How loading time affects your bottom line’
 Huffington Post: ‘Top 10 SLOWEST loading websites of the Fortune 500’
 Google PageSpeed Insights Tool: https://developers.google.com/speed/pagespeed/insights/
 Convert Binary: https://www.imagemagick.org/script/convert.php
 Tiny PNG: https://tinypng.com/
 Image Smaller: http://www.imagesmaller.com/
 Tiny PNG Analyser: https://tinypng.com/analyzer