# Unable to manually change size for an image thumbnail?
**URL:** https://meta.discourse.org/t/unable-to-manually-change-size-for-an-image-thumbnail/87201
**Category:** Support
**Created:** [10 mei 2018 om 19:57 UTC](https://meta.discourse.org/t/unable-to-manually-change-size-for-an-image-thumbnail/87201 "2018-05-10T19:57:42Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@rlauriston](https://meta.discourse.org/u/rlauriston)
#### Post date: [10 mei 2018 om 19:57 UTC](https://meta.discourse.org/t/unable-to-manually-change-size-for-an-image-thumbnail/87201/1 "2018-05-10T19:57:42Z")
I have a 722x1024 image. When I uploaded it, the markdown had a smaller size, making the text in the image too small to read easily. I tried manually changing the size in the markdown but it has no effect.
> **[Cockscomb - SF](https://www.foodtalkcentral.com/t/cockscomb-sf/1744/6)**
>
> Brought my own, the reds on the wine list tend toward the ripe, high-alcohol style I don’t like. Combining tripe, geoduck, and roe was brilliant, great mix of flavors and textures. Great larb, nice and spicy. I’ve had Cosentino’s take...
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### Author:  [@awesomerobot](https://meta.discourse.org/u/awesomerobot)
#### Post date: [10 mei 2018 om 20:15 UTC](https://meta.discourse.org/t/unable-to-manually-change-size-for-an-image-thumbnail/87201/2 "2018-05-10T20:15:48Z")
When you upload a large image to a post it’s converted into a smaller thumbnail (this helps the topic load faster, and also prevents the image from overflowing the post area). You can click the image once it’s posted to view it larger or to download the full-size image.
By default, the thumbnail image in posts is restricted to these dimensions:
```plaintext
max-width: 690px;
max-height: 500px;
```
Since your image is taller than it is wide, it was restricted by its height and resized proportionately to 253x500.
In Admin \> Settings these settings can be overridden… the settings are named `max image width` and `max image height`. Overriding the max-height is fairly safe, but I’d avoid overriding the max-width, as the image would likely be wider than the post area and get cut off.
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### Author:  [@pradeepkumar](https://meta.discourse.org/u/pradeepkumar)
#### Post date: [10 mei 2018 om 21:56 UTC](https://meta.discourse.org/t/unable-to-manually-change-size-for-an-image-thumbnail/87201/3 "2018-05-10T21:56:04Z")
I have an issue related to this.
Earlier we used a different “max-width” for our images and now we use “690px”, but the old images are not reverting back to 690px now, is this a common issue or do we have any fix for this?
You can see the images here for example:
[https://forum.hellboundbloggers.com/t/premium-paid-wordpress-plugins-we-use-for-our-blog-network/2626](https://forum.hellboundbloggers.com/t/premium-paid-wordpress-plugins-we-use-for-our-blog-network/2626)
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### Author:  [@awesomerobot](https://meta.discourse.org/u/awesomerobot)
#### Post date: [11 mei 2018 om 00:30 UTC](https://meta.discourse.org/t/unable-to-manually-change-size-for-an-image-thumbnail/87201/4 "2018-05-11T00:30:43Z")
If you click the wrench icon below a post containing images that need to be resized and select the “Rebuild HTML” option I believe it should resize them.
If you have a lot of posts you need to do this to, I think you could rebake all posts to correct it.
> [@Rebake all posts?](https://meta.discourse.org/t/rebake-all-posts/69340/2):
>
> Either one of these should work ./launcher enter app rake posts:rebake or cd /var/discourse ./launcher enter app bundle exec rake posts:rebake
If you continue having problems or need additional help, you should open a new topic.
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### Author:  [@system](https://meta.discourse.org/u/system)
#### Post date: [25 oktober 2020 om 08:01 UTC](https://meta.discourse.org/t/unable-to-manually-change-size-for-an-image-thumbnail/87201/5 "2020-10-25T08:01:19Z")