Not all thumbnails are generated.

Hi TeKno Ziz.

I don’t think it’s permissions issue too. I also don’t think it’s because of the files.
I tried upload your files on my site, and they are converted well. The files were made by the same app and output as the same format.

Maybe the problem is the RAM memory, because pdf files tend to be large.
Have you tested to upload the same one again?
If it works, Increase values in php.ini, for example:

memory_limit = 128M
upload_max_filesize = 64M
post_max_size = 64M

And add the following code to wp-config.php:

define("WP_MEMORY_LIMIT", "128M")

If there is no improvement after setting them, try uncheck “Customize Generated Image properties” in the options setting page of the plugin. If you need only thumbnail size images, this option has no great advantage.

I actually did try earlier to import the file again and got the same result. I also tried unchecking the Customize Generated Image Properties prior to attempting the re-importing. I guess the only thing to try is checking the memory limits, which I have to get someone behind their firewall to do. I will let you know the results. Thanks for your reply.

Thanks for trying.

From your report, I think changing memory limit doesn’t help to resolve this issue. Anyway it’s hard to guess what might be the cause.

For reference, could you tell me which extension and version of ImageMagick you are using.
(See the end of the row in the option page.)

Version 6.6.9 of ImageMagick with exec function.

Version 1.5.4.1 of your plugin.

I checked your page (https://kyocera.biscom.com/resources/) and I thought to question that there are 6 file links but only two URLs.