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Post-processing of the Image Failed If This is a photo or a Large Image Scale It Down to 2500 Pixels

To avoid this type of error, you can modify your images before you upload them. It will help you uploading error free images. WordPress recently updated their requirements on media file uploading in server.

If you experienced the error message "Post-processing of the image failed. If this is a photo or a large image, please scale it down to 2500 pixels and upload it again", you should watch the video carefully. 

There is no exact solution of this error, but we can try to solve the issue implementing some techniques. This will help you editing and updating the issues effectively. You will able to handle the error following some common tricks.

The problem happens for browser caching that you can easily fix clearing the browser cache files. You can also upload images from the Media Library option and the problem will be fixed. I experienced the same issue on my website after the WordPress Version update and did research on it.

Finally, I got a solution and I created the video to help more people who is experiencing the same issue on their website. I know how you feel when you can't upload images on your website and you don't get any solution.

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How to Fix Post Processing Error in WordPress?

I had a quick fix on my website for this error. But most of the people are not getting the solution from the video. I did further research and list few more possible ways. Hope these methods will help you.

Method 1: Clear Browser Caching

Method 2: Upload Image Using Media Uploader

Method 3: Disable "BIG Image" Threshold

Method 4: Downgrade WordPress Version

Clear Browser Caching: This is one of the reason you experiencing the issue of uploading image. You should clear all the caching from the browser and check if the uploading process working or not. If you don't get the solution, you should try the 2nd method.

Upload Image from Media Library: You should visit Media > Add New option from your WordPress dashboard. Then upload an image using the upload option. This will remove the error and you can upload new images easily. 

Disable "BIG Image" Threshold: This is a great plugin by Jonathan Desrosiers that helps you getting quick fix from the error. You can download "Disable "BIG Image" Threshold" plugins from WordPress Theme directory and use it to fix the problem.

Recent WordPress 5.3 update bring a limitation for the larger images more than 2500px. This plugins will help you to fix the error. However, few people blamed the plugin is not working for them. But I suggest you to try the plugin at least to check.

Plugins Download Link

Downgrade the WordPress Version: Most of the people has the common blame that they are experiencing the issue after upgrading their WordPress version. If you also think the latest version is causing the problem, you can downgrade the WordPress version to check. WordPress will fix the error quick and you can than upgrade the version. 

How to Downgrade WordPress Version?

More Solutions from WordPress.org Forum:

How to Disable Post-processing Image Error WordPress?

Post Processing Image Failed Error

Rather adding this line on the functions.php, I suggest you to install the Plugins I recommended above. Because, if you use the line on main theme instead of the child theme, this code will be removed whenever you update your theme. If you use the plugins, it will be easier for you to deactivate whenever you need.

WordPress image uploading error solution

This command helps to remove all the caches from the server.

Disclosure: We are affiliated with several hosting provider, WordPress Theme Developer & plugins developers. We may earn commission if you choose to purchase mentioned product at no extra cost to you!.
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Click Here to Leave a Comment Below 24 comments
Kayt - November 26, 2019

This is no way fixes the issue

    Muhibul Haque - November 26, 2019

    If you did not get the solution, I can help you to fix it. If I can learn something from your website, I will update the tricks here. So more people get help. Please email me, if you want help. riyadabc@gmail.com

Sherry - November 26, 2019

Worked on my website, thanks a lot. This was really a quick fix.

Desu - November 26, 2019

My post is not updating. Also, Image upload option not working. How can I check & Fix?

    Muhibul Haque - November 26, 2019

    If you are experiencing any issue with post publishing & updating, please check this tutorial.

Kayt - November 26, 2019

I cleared my cache and directly uploaded through the media tab. I am still experiencing the same issue.

    Muhibul Haque - November 26, 2019

    I can check the issue on your website, if you want.

fariss - December 18, 2019

Thanks for the tip, I did just upload the plugin and clear my browser cache and was able to upload images instantly.

Samuel - December 19, 2019

Thanks for the article.

An alternative that I found out after trying out a few things (only for people who use the Smush plugin) is to enable ” Resize my full size images” in Smush and enter a higher value.

    Muhibul Haque - December 20, 2019

    I didn’t know the method. Thanks for sharing the tips. Obviously, this will help my readers to solve the issue.

rod binder - December 23, 2019

it was simpler for me I upload the images get the errors. close browser open up the wp page again and they are. no plugins no problem

Tinh - December 28, 2019

Thank you so much for your instruction. It worked for mine.
Really appreciate that !
Good day !

Mike Eccles - December 31, 2019


1. In WP Go to >> Media >> dropdown list in dashboard heading >> Add New (don’t use the Add New from within the Library)
2. If the Upload New Media is set to the multi-file uploader, then switch to the browser built-in file uploader.
3. Using the single file uploader WORKS and solves the problem

You will be able to see which Uploader you are using as follows:

2. If you see this:

You are using the browser’s built-in file uploader. The WordPress uploader includes multiple file selection and drag and drop capability. [OR] Switch to the multi-file uploader.

Maximum upload file size: 32 MB.

Then your uploads will work

3. If you see this:

You are using the multi-file uploader. Problems? Try the browser uploader instead.

Maximum upload file size: 32 MB.

Then click on the link to use the browser uploader.

Then you are using

    Muhibul Haque - January 1, 2020

    Mike, I really appreciate your co-operation. Surely, this will help people to apply another cool technique. Thanks a lot.

Doug J - January 3, 2020

UPDATE: I used WP Downgrade to go back to WP Core version 5.2.5 and the issue immediately went away.

I’m convinced that WordPress Core’s new “big image” handling feature, which was implemented beginning with version 5.3, is somehow broken.

I had already tried to fix this by clearing all server caches, and checking error log and debug log (nothing showed at all regarding today’s date). Nothing helped except downgrading.

Again, here’s the page (with discussion) about the new feature:


Summary: I think this new feature broke our multisite (no way to upload big images), and downgrading WordPress Core to 5.2.5 fixed the issue.

WordPress Core Team, please help!

Yasir khan - January 4, 2020

I have the same issue on my website. I have two images and both resolutions are higher than 2500.
one image is 3300 and is png image and is uploading fine.
the other one is 7600 and is a jpg image and shows this error.
“Post-processing of the image failed. If this is a photo or a large image, please scale it down to 2500 pixels and upload it again.”
I tried all the methods but nothing works for me.

Any suggestions, please?

    Muhibul Haque - January 5, 2020

    If you need to upload images larger than 2500px, I suggest you to upload the image on your hosting directly. Then collect the link of images to use on your website. You will also find plugins that helps to upload image directly to your hosting, not in wordpress directory. So, you can try the method.

      Yasir khan - January 5, 2020

      Actually my customers will upload their own images, and customer don’t know how to scale images. also, they don’t have permission to the admin side.

        Muhibul Haque - January 5, 2020

        Did you try to disable the big image issue using the code on your function.php file?

        add_filter( ‘big_image_size_threshold’, ‘__return_false’ );

          Yasir khan - January 5, 2020

          yes, I tried that, but that didn’t solve my problem.

          Yasir khan - January 6, 2020

          yes, I already did it. but still, have the same issue.

          Muhibul Haque - January 6, 2020

          Please contact us through the contact form. I will try to solve your issue.

Guest - February 2, 2020

Same here. Solution did not work 🙁


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