[opencms-dev] Opencms webp image format

Thu Sep 21 11:39:59 CEST 2023

[like]  Schliemann, Kai reacted to your message:
________________________________
From: opencms-dev <opencms-dev-bounces at opencms.org> on behalf of Alex Kandzior via opencms-dev <opencms-dev at opencms.org>
Sent: Thursday, September 21, 2023 8:25:08 AM
To: The OpenCms mailing list <opencms-dev at opencms.org>
Cc: Alex Kandzior <alex at opencms.org>
Subject: Re: [opencms-dev] Opencms webp image format

@Alkacon: it might be a good idea to add this as a dependency for the OpenCms core, that way WebP should work as expected.

Thanks Kai for the hint.
We will run some checks and if everything works as expected we will include this lib for OpenCms 16.

Kind regards,
Alex.

-------------------
Alexander Kandzior

Alkacon Software - The OpenCms Experts
http://www.alkacon.com - http://www.opencms.org

Am 21.09.2023 um 09:03 schrieb Giuseppe Lonis via opencms-dev <opencms-dev at opencms.org>:

Great news Kai,
really congratulations on the solution.

Thank you so much
Giuseppe
< >
Giuseppe Lonis – ConsulMedia Srl
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Il giorno mer 20 set 2023 alle ore 17:10 Kai Widmann <Widmann at mediaworx.de<mailto:Widmann at mediaworx.de>> ha scritto:
Hey Giuseppe (an to everyone who is interested in WebP with OpenCms),

Therefore the problem cannot be solved.
I beg to differ, I solved this with the library "webp-imageio" described here:
https://genuinecoder.com/java-webp-image-read-save-tutorial/

webp-imageio adds native support for WebP to Java, so the native image methods used in OpenCms image scaling also work with WebP. It’s really as simple as dropping the jar in the lib folder (or defining a Maven/Gradle dependency).

My first tests are really promising, image sizes in the CMS are now correct (instead of -1 x -1), image scaling of WebP images is working as expected. So far so good.
It’s important to know that you have to re-upload WebP images, I guess the size is read during the initial upload, once wrong it doesn’t get corrected by using the library. But after re-uploading the image, everything seems to be fine.
If I for some reason find that this does not work as expected in the end, I’ll report.

@Alkacon: it might be a good idea to add this as a dependency for the OpenCms core, that way WebP should work as expected.

Cheers

Kai

_______________________________________________

Kai Widmann
mediaworx berlin AG

+49 30 27580-262
Digitale Visitenkarte: https://mediaworx.com/021
www.mediaworx.com<http://www.mediaworx.com/>

Am 20.09.2023 um 08:59 schrieb Giuseppe Lonis <glonis at consulmedia.it<mailto:glonis at consulmedia.it>>:

Hi Kai,
unfortunately on the opencms issues they wrote that the ImageScaler library does not support that format.
Therefore the problem cannot be solved.

Greetings Giuseppe

Il giorno mar 19 set 2023 alle ore 18:13 Kai Widmann <Widmann at mediaworx.de<mailto:Widmann at mediaworx.de>> ha scritto:
Hello Giuseppe,

I’m facing similar problems in OpenCms 15. May I ask if you solved this and if so, how?

Cheers

Kai

_______________________________________________

Kai Widmann
mediaworx berlin AG

+49 30 27580-262
Digitale Visitenkarte: https://mediaworx.com/021
www.mediaworx.com<http://www.mediaworx.com/>

Am 15.08.2023 um 10:55 schrieb Giuseppe Lonis via opencms-dev <opencms-dev at opencms.org<mailto:opencms-dev at opencms.org>>:

HI,
on opencms version 14 there are problems displaying images in webp format.
In particular, in the preview inside content the image is not resized, unlike the jpg ones.

Also the scaling of the image with the command image.webp?__scale=w:1200,h:1200,t:2,c:transparent,p:0 does not work (it should become a square image instead it keeps the original format).

Finally, due to this problem the image gallery is very slow to load.

A thousand thanks
Greetings Joseph
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