John Blackbourn (@johnbillion) – WordPress user profile | WordPress.org
Profiles
Bio
I’m one of the team of WordPress core developers. I was the release lead for WordPress 4.1 and 4.9.1. I work as the Director of WordPress Security at Human Made and I’m the WordPress core security team lead.
Previously I’ve worked at Code For The People and WordPress.com VIP.
Contributions
Sponsored
Human Made
sponsors John Blackbourn to contribute 16 hours per week to the
Core
team.
Member Since:
December 7th, 2005
Location:
Norwich, UK; and Torino, Italy
Website:
johnblackbourn.com
GitHub:
johnbillion
Employer:
Human Made Ltd
Find me on:
Contribution History
John Blackbourn’s badges:
Accessibility Contributor
bbPress Contributor
BuddyPress Contributor
Core Contributor
Core Team
Documentation Contributor
Meetup Organizer
Meta Contributor
Plugin Developer
Security Contributor
Security Team
Translation Contributor
WordCamp Organizer
WordCamp Speaker
Activity
Plugins
Favorites
Translations
Posted a
reply
to
PHP Fatal Error
, on the site WordPress.org Forums:
Does this definitely only occur when Query Monitor is active? That's an error from RevSliderAdmin.
3 hours ago
Posted a
reply
to
The error message should be (force) wrap.
, on the site WordPress.org Forums:
Thanks, I'll take a look at both of those issues.
2 days ago
Posted a
reply
to
what does gap like this mean?
, on the site WordPress.org Forums:
That means there's PHP processing happening that Query Monitor hasn't got visibility into. It looks…
2 days ago
Pushed
1 commit
to
WordPress/WordPress
Build/Test Tools: Use the exact tag name in version number...
3 days ago
Committed
[62254]
to Core SVN:
Build/Test Tools: Use the exact tag name in version number comments ...
3 days ago
Pushed
1 commit
to
WordPress/WordPress
Build/Test Tools: Remove unnecessary use of GitHub Actions expressions for...
3 days ago
Committed
[62253]
to Core SVN:
Build/Test Tools: Remove unnecessary use of GitHub Actions expressions ...
3 days ago
Closed pull request
#9767
on
WordPress/wordpress-develop
Add more workflow file linting with Zizmor
3 days ago
Pushed
1 commit
to
WordPress/WordPress
Build/Test Tools: Update Actionlint to the latest version.
3 days ago
Committed
[62252]
to Core SVN:
Build/Test Tools: Update Actionlint to the latest version. See #64227
3 days ago
Pushed
1 commit
to
WordPress/WordPress
Build/Test Tools: Address some issues in GitHub Actions workflow files...
3 days ago
Committed
[62251]
to Core SVN:
Build/Test Tools: Address some issues in GitHub Actions workflow files ...
3 days ago
Pushed
1 commit
to
WordPress/WordPress
Build/Test Tools: Add more workflow file linting with Zizmor.
3 days ago
Committed
[62250]
to Core SVN:
Build/Test Tools: Add more workflow file linting with Zizmor. This ...
3 days ago
Wrote a new handbook page,
GitHub Actions Workflow Standards
, on the site WordPress Developer Resources:
GitHub Actions workflows operate in a highly privileged software supply chain environment. Workflows can access…
3 days ago
Submitted pull request
#11618
to
WordPress/wordpress-develop
Switch to PCOV for the coverage report runner
3 days ago
Posted a
reply
to
Can’t open overview in frontend
, on the site WordPress.org Forums:
A few people have been asking about a browser dev tools version of Query Monitor.…
3 days ago
Closed pull request
#11589
on
WordPress/wordpress-develop
Performance: Use filesystem read instead of HTTP request for admin co…
1 week ago
Posted a
reply
to
Unable to sort DB Queries by time after update
, on the site WordPress.org Forums:
Yeah this is something I had to drop from version 4 due to time constraints…
1 week ago
Posted a
reply
to
OpenSSL Error
, on the site WordPress.org Forums:
You'll need to ask your web host or Cloudflare to take a look. It's not…
1 week ago
Closed pull request
#177
on
WordPress/blueprints
Create pwn.yml
1 week ago
Created ticket
#8232
on Meta Trac:
Previewing a draft page on the Coding Standards Handbook shows a 404
1 week ago
Posted a
reply
to
Can’t open overview in frontend
, on the site WordPress.org Forums:
QM doesn't force the admin toolbar to appear but it did used to show the…
1 week ago
Posted a
reply
to
7.0: Excessive lag when loading Classic Editor
, on the site WordPress.org Forums:
Have you been able to test this with Query Monitor version 4 yet? It's generally…
2 weeks ago
Posted a
reply
to
Error after update 4.0
, on the site WordPress.org Forums:
This issue should be fixed in the latest version. If you're seeing any issues that…
2 weeks ago
Posted a
reply
to
List of plain text error when embedding in a post after upgrading
, on the site WordPress.org Forums:
Thanks for letting me know!
2 weeks ago
Posted a
reply
to
Plugin fails entirely in 4.0 and 4.0.1
, on the site WordPress.org Forums:
The original problem reported in this thread has now been fixed, so please use separate…
2 weeks ago
Posted a
reply
to
Plugin fails entirely in 4.0 and 4.0.1
, on the site WordPress.org Forums:
The calling_line property no longer exists. The PHP error is actually correct in this regard,…
2 weeks ago
Posted a
reply
to
Can’t open overview in frontend
, on the site WordPress.org Forums:
I've just released version 4.0.6 which fixes a compatibility issue with an accessibility script that's…
2 weeks ago
Committed
[3503925]
to Plugins SVN:
Update to version 4.0.6 from GitHub
2 weeks ago
Committed
[3503492]
to Plugins SVN:
Update to version 4.0.5 from GitHub
2 weeks ago
Committed
[3503331]
to Plugins SVN:
Update to version 4.0.4 from GitHub
2 weeks ago
Created issue
#77227
in the
WordPress/gutenberg
repository:
Switch to OIDC trusted publishing for npm packages
2 weeks ago
Posted a
reply
to
List of plain text error when embedding in a post after upgrading
, on the site WordPress.org Forums:
Thanks for the report. I'll take a look.
2 weeks ago
Posted a
reply
to
Fatal TypeError in All Products for WooCommerce Subscriptions during switching
, on the site WordPress.org Forums:
If this happens on regular logins as well as User Switching then I think it's…
2 weeks ago
Posted a
reply
to
Can’t open overview in frontend
, on the site WordPress.org Forums:
I've just released 4.0.3 which improves compatibility with plugins and themes that perform non-UTF8 queries,…
2 weeks ago
Committed
[3502862]
to Plugins SVN:
Update to version 4.0.3 from GitHub
2 weeks ago
Posted a
reply
to
Plugin fails entirely in 4.0 and 4.0.1
, on the site WordPress.org Forums:
The underlying issue is that the data collected by Query Monitor used to live in…
2 weeks ago
Posted a
reply
to
Can’t open overview in frontend
, on the site WordPress.org Forums:
I've just released 4.0.2 with further backwards compatibility fixes for third-party plugins that might be…
2 weeks ago
Posted a
reply
to
Plugin fails entirely in 4.0 and 4.0.1
, on the site WordPress.org Forums:
I've just released 4.0.2 with further backwards compatibility fixes, including a fix for Pods and…
2 weeks ago
Committed
[3502469]
to Plugins SVN:
Update to version 4.0.2 from GitHub
2 weeks ago
Posted a
reply
to
Plugin fails entirely in 4.0 and 4.0.1
, on the site WordPress.org Forums:
Thanks everyone. I'm taking a look.
2 weeks ago
Posted a
reply
to
Plugin fails entirely in 4.0 and 4.0.1
, on the site WordPress.org Forums:
@bsmolyanov Thanks for that info. I'm already chatting with the author of Object Cache Pro…
2 weeks ago
Posted a
reply
to
Plugin fails entirely in 4.0 and 4.0.1
, on the site WordPress.org Forums:
Thanks for the info everyone. Does this happen only on the front end? Or in…
2 weeks ago
Posted a
reply
to
Can’t open overview in frontend
, on the site WordPress.org Forums:
Thanks for the report @keeslamper. Which theme are you using? Does the problem go away…
2 weeks ago
Posted a
reply
to
Plugin fails entirely in 4.0 and 4.0.1
, on the site WordPress.org Forums:
Thanks for the report. Can you try deactivating some of your plugins one by one…
2 weeks ago
Posted a
reply
to
Cron job not triggering reports
, on the site WordPress.org Forums:
This isn't something that WP Crontrol can really help you with (except to identify if…
2 weeks ago
Posted a
reply
to
Script and Style dependancy color stopped showing on mouse hover
, on the site WordPress.org Forums:
The problem I found with this feature is that it doesn't work well when you…
2 weeks ago
Posted a
reply
to
Can’t change Duration units in Settings tab
, on the site WordPress.org Forums:
Thanks for the report. If you switch back to the Database Queries or Timeline panel,…
2 weeks ago
Committed
[3501143]
to Plugins SVN:
Update to version 4.0.1 from GitHub
2 weeks ago
Developer
Query Monitor
Active Installs: 200,000+
User Switching
Active Installs: 200,000+
WP Crontrol
Active Installs: 300,000+
Contributor
Airplane Mode
Active Installs: 60+
C3 Cloudfront Cache Controller
Active Installs: 3,000+
HM Content TOC
Active Installs: 10+
Login as User
Active Installs: 30,000+
Sched Event Management Software
Active Installs: 200+
Two Factor
Active Installs: 100,000+
Plugins
Airplane Mode
Google Authenticator
HTTPS Mixed Content Detector
User rating
Keyring
User rating
Members - Membership & User Role Editor Plugin
User rating
Multiple Post Thumbnails
User rating
Posts 2 Posts
User rating
Query Monitor
Redis Object Cache
Regenerate Thumbnails
Rewrite Rule Testing
User rating
Rewrite Rules Inspector
User rating
RTL Tester
User rating
Transients Manager
User Switching
WP Crontrol
Themes
Italiano (Italian) Translation Contributor - #it_IT
Query Monitor
and
User Switching
Nederlands (Dutch) Translation Contributor - #nl_NL
Query Monitor
and
User Switching
Български (Bulgarian) Translation Contributor - #bg_BG
User Switching
Ελληνικά (Greek) Translation Contributor - #el
User Switching
Suomi (Finnish) Translation Contributor - #fi
User Switching
Français (French (France)) Translation Contributor - #fr_FR
Query Monitor
Lietuvių kalba (Lithuanian) Translation Contributor - #lt_LT
User Switching