Use Case: Perfect Image sizes for both visitors and #SEO

When you display an image on a blog or webpage, should it have a high resolution for large desktop views or are you better of with a small resolution for on mobile devices? What is the impact of the image size on #SEO? Loading a large image and then down scaling it on smaller devices is not good and will impact your page speed and #SEO ranking negatively. What is the best solution here? What is the best average image size to use that will suit all situations?

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Challenge: What is the best image size that will not impact my site's #SEO negative and will display at the best possible quality for my visitors browsing with different devices?

To be short: there isn't. Using an average image size will at most give your users an 'average' viewing quality and will likely still negatively impact your sites #SEO.

Image sizes, network speeds, device screen sizes and lately with mobile devices the screen dpi make selecting the perfect image size impossible: it will always be at most a compromise.

An image with a 1920px width will look good on a desktop with a 1920px display, it will also look good on all devices with a lower screen width, but Google will not be pleased: why use a large 1920px wide image on a device where the max image width is 360px?

An image with a width of 360px will load lighting fast and will be good for #SEO, and although the image looks great on mobile device with a screen with of 360px and dpi of 1, it will look blurred on larger screens as the image needs to be up scaled.

Solution: ochResponsiveImages

You are not the only one facing this challenge and the browser 'industry' came up with a solution: image source sets.

Why not offer multiple sizes of the images and let the browser decide what image is best suited for the device the user is visiting your site with?

So instead of serving one 'average' image, you serve multiple images, ranging from best fit for desktop to best fit for small mobile screens. Depending on the screen size, the screen dpi and the network speed, the browser will download the best possible image and display that to your visitor.

Enter the world of image source sets!

ochResponsiveImages will handle this for you automatically: no changes on your side needed, no more manually resizing images!

  1. you upload and insert the largest possible image into your blog or article (e.g. 3000px wide)
  2. ochResponsiveImages will create seperate images for each configured device width (e.g. 1920px, 1360px, 1024px, 768px, 460px, etc.)
  3. ochResponsiveImages will automatically replace the image code with the image srcset code, injecting all the created images

There are other solution that implement src sets when inserting an image into your blog, but there is one very big downside: what if you decide to change resolution, what if you decide to switch the template and you need different image size in the src set. Open all articles and reinsert the images with the correct src-set?...

ochResponsive images works 'on-the-fly'! when you change the resolution in the configuration, ALL article and blog images are directly converted to these new sizes and the src-sets are using this new setting!

Result: your site will look great and Google will love you (which is good for #SEO)

And even more, you finally have time to do more important things on your website than resizing and uploading images.

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With a solid background in ICT (operational, tactical and strategic) and years of experience in the community life, I see in communities and community thinking the future for companies.

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Ruud van Lent's Avatar
Ruud van Lent replied the topic: #1241 2 months 3 weeks ago
I know :)
created this one initially for my own blog site where people where uploading their pictures from their camera (5mb each) and then setting a width to fit them in the blog... that would be 5MB of overhead on the page. So in my role as editor i was always busy resizing these images...

Now they can just upload whatever they want and ochResponsiveImages resizes automatically to the breakpoints configured (aligned with my template): this is just a configure and forget plugin.

last week was asked by a user who wanted to resize all images in 1000+ articles: 'Can you create a script for that'.

by using this plugin I once again realise how powerful and time saving it is. if breakpoints change in the future, just adjust them and that's it: new images are automatically created and img src-sets are adjusted.

there are some editor plugin out there that will create the src-set and separate image files when uploading an image, but that will only work when uploading: When you want to change 1000+ articles, you need to redo them all again

love it...

O and as a bonus: you can also add a lazy load element attribute to the images, a native one, so not JavaScript overhead, but browser native lazy loading! This is a new browser feature rolling out to all popular browsers currently: Google will love you for implementing it this way!!
Alison Meeks's Avatar
Alison Meeks replied the topic: #1240 2 months 3 weeks ago
Nice!

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