Felix Arntz – @flixos90

Member Since: November 28th, 2012
Location: Zürich, Switzerland
Website: felix-arntz.me
GitHub: felixarntz
Job Title: Developer Programs Engineer
Employer: Google
Find me on:

Bio

Developer Programs Engineer at Google. WordPress Core Committer. Previously Yoast. Runner, musician, movie geek. Aprendiendo español. Fueled by Mountain Dew.

Interests

Music Production. Movies. Brostep. WWE. Cocktails. Soccer. Running.

WordPress Origin Story

September 2012: Started working with WordPress
November 2012: Signed up for wordpress.org
March 2013: Published his first plugin on wordpress.org
October 2014: Reviewed a WordPress book
November 2014: Started working with WordPress multisite
June 2015: Attended his first WordCamp (WCEU in Sevilla)
June 2015: Did his first contribution to WordPress core
October 2015: Became co-organizer of the WordPress meetup Cologne
February 2016: Started contributing to WordPress core regularly
May 2016: Became a component maintainer of Multisite
May 2016: Gave his first session at a WordCamp
September 2016: Became co-organizer of the WordPress meetup Dusseldorf
October 2016: Co-organized WordCamp Cologne
November 2016: Became a WordPress core committer
June 2017: Attended his first WordPress community summit
August 2017: Became a component maintainer of Roles/Capabilities
February 2018: Gave a session at LoopConf
April 2018: Started working part-time at Yoast
April 2018: Became a component maintainer of REST API
November 2018: Started as DPE in the Web Content Ecosystems team at Google

Contributions Sponsored

Felix Arntz contributes 5 hours per week to the Core team.

Contribution History

Core Contributor
Core Team
Documentation Contributor
Meta Contributor
Plugin Developer
Translation Contributor
Translation Editor
WordCamp Organizer
WordCamp Speaker

Activity
Plugins
Favorites
Translations

Created a new ticket, #50756, in Core Trac:
Lazy-load iframes

5 days ago
Committed [2342069] to Plugins Trac:
tagged version 1.12.0

2 weeks ago
Committed [2342068] to Plugins Trac:
updated to version 1.12.0

2 weeks ago
Wrote a new post, Lazy-loading images in 5.5, on the site Make WordPress Core:
In WordPress 5.5, images will be lazy-loaded by default, using the native HTML loading attribute…

2 weeks ago
Committed [2338262] to Plugins Trac:
tagged version 1.11.1

3 weeks ago
Committed [2338261] to Plugins Trac:
updated to version 1.11.1

3 weeks ago
Committed [2336957] to Plugins Trac:
tagged version 1.11.0

3 weeks ago
Committed [2336956] to Plugins Trac:
updated to version 1.11.0

3 weeks ago
Committed [48272] to Core Trac:
Media: Improve support for opting out of lazy-loading for template ...

4 weeks ago
Closed ticket #50367, in Core Trac:
Avoid layout shifting due to images not having dimension attributes

4 weeks ago
Committed [48239] to Core Trac:
Media: Only add `loading` attribute to `img` tags using double quotes. ...

4 weeks ago
Reopened ticket #50367, in Core Trac:
Avoid layout shifting due to images not having dimension attributes

4 weeks ago
Closed ticket #50367, in Core Trac:
Avoid layout shifting due to images not having dimension attributes

4 weeks ago
Committed [48237] to Core Trac:
Media: Introduce `wp_img_tag_add_width_and_height_attr()` to add ...

4 weeks ago
Closed ticket #50367, in Core Trac:
Avoid layout shifting due to images not having dimension attributes

1 month ago
Committed [48170] to Core Trac:
Media: Ensure images have dimensions to reduce layout shift and ...

1 month ago
Committed [2327083] to Plugins Trac:
tagged version 1.10.0

1 month ago
Committed [2327082] to Plugins Trac:
updated to version 1.10.0

1 month ago
Created a new ticket, #50425, in Core Trac:
Do not lazy-load images which are very likely to be in the initial viewport

1 month ago
Committed [2316040] to Plugins Trac:
tagged version 1.9.0

2 months ago
Committed [2316039] to Plugins Trac:
updated to version 1.9.0

2 months ago
Wrote a new post, Lazy-Loading Update, on the site Make WordPress Core:
Since lazy-loading images via the native loading attribute was proposed for addition to WordPress core,…

5 months ago
Posted a reply to Only works on chrome, on the site WordPress.org Forums:
@mddsharp It is, but note that it only makes sense for you if parts of…

6 months ago
Wrote a new post, Lazy-Loading Images in WordPress Core, on the site Make WordPress Core:
Lazy-loading images has been a commonly used mechanism to significantly improve pageload performance for several…

6 months ago
Posted a reply to Room for Improvement – Specify Dimensions, suggested by JavaScript Console, on the site WordPress.org Forums:
Hi, this message appears because that image likely doesn’t have width and height attributes specified.…

8 months ago
Posted a reply to Images not loading, on the site WordPress.org Forums:
Hi, thanks for the report. Which browser, and which version of it are you using?…

8 months ago
Posted a reply to Site images does not show, on the site WordPress.org Forums:
Thanks for the report. Can you provide me with some more context? Which browser, and…

8 months ago
Posted a reply to Gravity Forms AJax Iframe 404, on the site WordPress.org Forums:
Thanks for the report. I will have a look at this soon to see whether…

8 months ago
Posted a reply to PageSpeeds insight reports slower load, on the site WordPress.org Forums:
Hi, there might be multiple reasons for this. First of all, I'm not entirely sure…

8 months ago
Posted a reply to Stopped images loading, on the site WordPress.org Forums:
Sorry for the late reply, I'm happy to help and figure out the issue. Can…

8 months ago
Posted a reply to ‘Intervention’ message in Lighthouse audit, on the site WordPress.org Forums:
Hi, this message appears because that image likely doesn't have width and height attributes specified.…

8 months ago
Posted a reply to if the plugin works?, on the site WordPress.org Forums:
Hi, the way that Chrome uses lazy-loading with the loading attribute depends on various factors,…

8 months ago
Posted a reply to Disable JavaScript file, on the site WordPress.org Forums:
You can add this code to either a custom plugin file you create, or alternatively…

8 months ago
Posted a reply to Prevents images loading in Safari and Firefox, on the site WordPress.org Forums:
Thanks for the report. Can you provide me with some more context on what happened…

8 months ago
Posted a reply to Latest update doesn’t display images on homepage, on the site WordPress.org Forums:
Can you see any error messages being logged in your browser's developer console? I wonder…

8 months ago
Posted a reply to Update 1.0.1 had opposite effect for me, on the site WordPress.org Forums:
Which browser and version of it are you using? When using the plugin, can you…

8 months ago
Posted a reply to Looks like it is made in a hurry, on the site WordPress.org Forums:
Hi Molly, can you provide me with some more context on what happened for you?…

8 months ago
Posted a reply to Breaks your site, beware!, on the site WordPress.org Forums:
I'm happy to help and figure out the issue. Can you provide me with some…

8 months ago
Posted a reply to Broke site entirely, on the site WordPress.org Forums:
I'm happy to help and figure out the issue. Can you provide me with some…

8 months ago
Posted a reply to Only works on chrome, on the site WordPress.org Forums:
The native attribute only works in Chrome, that is because no other browser supports it…

8 months ago
Posted a reply to Doesn’t show images on Edge, on the site WordPress.org Forums:
Hi Nic, I'm sorry for the inconveniences. We just released a new version that resolves…

8 months ago
Confirmed as a speaker for WordCamp Asia 2020

8 months ago
Wrote a comment on the post Defining Content–Block Areas, on the site Make WordPress Core:
I opened an issue for further discussion of the wp_template approach, and an initial PR…

10 months ago
Posted a reply to Issues with Avada Theme, on the site WordPress.org Forums:
Thanks for the report. The plugin relies on the default content rendering mechanisms WordPress core…

11 months ago
Posted a reply to Blank images in Firefox and Edge, on the site WordPress.org Forums:
Thanks for the report. Can you share some more context on your site, which theme/plugins…

11 months ago
Posted a reply to How to use for theme images?, on the site WordPress.org Forums:
The plugin should actually transform attributes for any image rendered with the WordPress function wp_get_attachment_image().…

11 months ago
Posted a reply to Doesn’t add any attributes to images, on the site WordPress.org Forums:
Thanks for the report. Can you share some more context on your site, which theme/plugins…

11 months ago
Posted a reply to Latest update doesn’t display images on homepage, on the site WordPress.org Forums:
Thanks for the report. Can you share some more context on your site, which theme/plugins…

11 months ago
Posted a reply to JS functions field into WordPress Dashboard for callback actions, resizes…., on the site WordPress.org Forums:
While that might somehow be possible (with onload attribute for example), for this scenario I'd…

11 months ago
Posted a reply to Breaks images… in Chrome, on the site WordPress.org Forums:
Thanks @kristoff-henry. The markup you shared actually looks correct on pageload, but there should be…

11 months ago