I used the 'Featured Image' function on one of my blogs and uploaded an image of 312 KB...after saving I viewed the site, but the image was blurred. I disabled the image optimizer 'Kraken' but when I loaded the same image, it was still blurred. What am I doing wrong. An image of 312 KB should be fairly clear on a blog screen. Thanks!

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nathaniell Premium Plus
First, check your image sizes. It says 312kb, but that may be a minimum, or maximum, so play with the image sizes to make sure you're getting your image size right BEFORE uploading. Second, when you upload your image, check the size it's implementing. After uploading, you can select options like "Large" or "Medium" or "Thumbnail". If WordPress is automatically choosing "Thumbnail", it could be causing the image to blur, and you just need to select "full size" to fix it.
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TedBurke Premium
Thanks Nathaniell, you are right that I select options like 'large', 'medium' or 'thumbnail'. This has corrected some of the images. How do I check the size of an image on my blog after I upload it? Do you have a good link on how to understand and manage Kraken?
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nathaniell Premium Plus
You shouldn't have to manage Kraken when you do this. After you upload an image there should be an option to select the size in the WordPress uploader. You can also make this change directly in WordPress once you click an image. See here: https://www.screencast.com/t/R4KcpwPjoCNQ

That may not work for your thumbnails though. If you're still having issues with your thumbnails, you may want to check Kraken.io settings and see what type of optimizations you have it set to do. For example, limiting your main image size could be causing problems. https://www.screencast.com/t/Pf67O9R4NmN

Setting it to 0 and 0 would stop resizing images. I doubt you'll need to do this, but worth checking.
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TedBurke Premium
Thanks, much appreciated!
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TedBurke Premium
Hi Nathaniell,

I tried to adjust image size as you suggest but the 'image size' function was not in the Block section of my Block editor. There was a message there that said 'Use the Classic Wordpress Editor'. I moved from the Block Editor to the Classic Editor but there was no way to adjust the image size there. You must therefore be using the paid version of the GeneratePress Theme.

Let me understand something, Wordpress will handle a maximum image size for blog posts of 1200 x 630 px and it will automatically resize images to fit the thumbnail, medium and large image sizes, thus reducing dimension and file size as well without loosing image resolution quality. Is that correct?

If so I should just use images of this size and let WordPress do the work for me, and have Kraken use additional magic to give me the best quality photo at the smallest size.

Am I correct in this?
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nathaniell Premium Plus
You should not have to any additional resizing as long as your initial image was not insanely large. With basic WordPress + Kraken installed, everything should be automated. The suggestions above were just about troubleshooting what might be the issue, but if your images are not crazy larger or small before uploading, everything *should* look good without adjustments.

Kraken does reduce the quality of the images slightly in order to keep your website running fast, but most people don't notice the slight downgrade. You could remove Kraken and see what happens if you're still having issues, but it's good to have an image optimizer like Kraken installed so if you don't notice a difference without the plugin installed, then I would recommend reinstalling it.
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TedBurke Premium
Great, thanks I think I'm ok on this now and will get cracking on a few blogs! Wishing you a great day ahead!
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TedBurke Premium
Thanks AbieAJ, I'll have a look at the tutorial post.
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feigner Premium
what siz ( pixels is it ) not worried about hte file size it is all about the pixel size...
if it is upscaling as a featured image then it may be blurred
phil
check what your theme needs isze wize as a featured image...
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TedBurke Premium
Thanks Phil, I never thought of it that way!
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TedBurke Premium
Thanks Lula, I'll check it out
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TedBurke Premium
Dear Lula,

I re-read the post you sent me and must admit it was very useful on understanding image dimensions and how to adapt them to my website. I highly recommend others to read it.

Thank you so much!
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lubna84 Premium
i think u need to upload images of 500 kb size
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TedBurke Premium
Thanks Lubna, much appreciated!
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