WordPress/performance

View on GitHub

Performance plugin from the WordPress Performance Group, which is a collection of standalone performance modules.

Stars: 461
Forks: 165
Open beginner issues: 0
Indexed issues: 122
Avg merge: 11h 12m
Merged PRs (30d): 28

Dominant language: PHP
License: GPL-2.0
Last GitHub push: Sep 16, 2026
Latest indexed: Sep 20, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed

Beginner friendly Everything

Open All

122 open issues indexed

Modern Image Formats: verify AVIF output with client side media uploads, and reflect it on the settings screen Open

[Plugin] Modern Image Formats [Type] Enhancement Needs Discussion

WordPress/performance#2662 · 1 assignee · Opened Sep 2, 2026
Broken security advisory link in Performance Lab changelog Open

[Type] Bug

WordPress/performance#2643 · 4 comments · 1 assignee · Opened Aug 26, 2026
Core: optimize mixed-post-type _get_last_post_time() queries Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

WordPress/performance#2640 · 3 comments · Opened Aug 24, 2026
OD_HTML_Tag_Processor PHP warning Open

[Plugin] Optimization Detective [Type] Bug

Difficulty 3/5 1-2 days Newbie friendliness 45/100

WordPress/performance#2622 · 8 comments · Opened Aug 10, 2026
Please add smooth scrolling to View Transitions plugin Open

[Plugin] View Transitions [Type] Enhancement

Difficulty 3/5 1-2 days Newbie friendliness 55/100

WordPress/performance#2602 · 2 comments · Opened Jul 29, 2026
DevTools Discovery API integration Open

Difficulty 5/5 Over a week Newbie friendliness 35/100

WordPress/performance#2553 · 2 comments · Opened Jun 30, 2026
Enhancement: add Plugin Check to existing test/lint tasks Open

Difficulty 4/5 3-5 days Newbie friendliness 48/100

WordPress/performance#2552 · 1 comment · Opened Jun 26, 2026
Add workflow to automatically assign milestone Open

Difficulty 5/5 Over a week Newbie friendliness 45/100

WordPress/performance#2541 · 1 comment · 1 reaction · Opened Jun 18, 2026
Image Placeholders: average pixels in linear light to avoid gamma-skewed dominant color Open

[Plugin] Image Placeholders [Type] Enhancement no milestone

Difficulty 4/5 3-5 days Newbie friendliness 58/100

WordPress/performance#2535 · 1 comment · Opened Jun 15, 2026
CI: Upgrade GitHub Actions to support Node.js 24 Open

Infrastructure

WordPress/performance#2526 · 1 comment · 1 assignee · Opened Jun 8, 2026
CSS Gradient Image Placeholders (ie CSS-only Blur/Thumbhash) Open

[Plugin] Image Placeholders [Type] Enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

WordPress/performance#2519 · 5 comments · 1 reaction · Opened Jun 4, 2026
Add AI-based Performance Tuning Recommendations as Site Health Tab (requires WP 7.0) Open

[Type] Feature [Type] Plugin Proposal

Difficulty 5/5 Over a week Newbie friendliness 28/100

WordPress/performance#2485 · 4 comments · Opened May 19, 2026
Linked images in galleries aren't replaced Open

[Plugin] Modern Image Formats [Type] Bug ContributorDay

Difficulty 3/5 1-2 days Newbie friendliness 68/100

WordPress/performance#2470 · 14 comments · Opened May 11, 2026
Some webp images sizes are not calculated correctly (1px) Open

[Plugin] Modern Image Formats [Type] Bug ContributorDay

Difficulty 3/5 1-2 days Newbie friendliness 48/100

WordPress/performance#2468 · 8 comments · Opened May 7, 2026
Core Support for Post Meta & Content Size Analysis Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

WordPress/performance#2462 · 1 comment · Opened Apr 29, 2026
Enhance the Enhanced Responsive Images plugin to account for more blocks Open

[Plugin] Enhanced Responsive Images [Type] Enhancement

Difficulty 4/5 3-5 days Newbie friendliness 48/100

WordPress/performance#2449 · Opened Apr 9, 2026
Register Abilities for Performance Lab plugins Open

[Type] Enhancement ContributorDay

Difficulty 5/5 Over a week Newbie friendliness 35/100

WordPress/performance#2441 · 2 comments · 1 reaction · Opened Apr 8, 2026
Image Placeholders not honoring image resizing Open

[Plugin] Image Placeholders [Type] Bug ContributorDay

Difficulty 3/5 1-2 days Newbie friendliness 48/100

WordPress/performance#2432 · 5 comments · Opened Mar 29, 2026
Add native lazy loading support for HTML video and audio tags Open

[Plugin] Image Prioritizer [Type] Feature

WordPress/performance#2400 · 3 comments · 3 reactions · 1 assignee · Opened Feb 25, 2026
PNG => AVIF => Always bigger files Open

[Plugin] Modern Image Formats [Type] Bug

Difficulty 3/5 1-2 days Newbie friendliness 32/100

WordPress/performance#2399 · 4 comments · 1 reaction · Opened Feb 24, 2026
WebP not generated/served when “Output fallback images” is enabled Open

[Plugin] Modern Image Formats [Type] Bug

Difficulty 3/5 1-2 days Newbie friendliness 67/100

WordPress/performance#2390 · 7 comments · Opened Feb 16, 2026
Explore `prerender_until_script` mode for Speculative Loading Open

[Plugin] Speculative Loading ContributorDay

Difficulty 4/5 3-5 days Newbie friendliness 35/100

WordPress/performance#2362 · 2 reactions · Opened Jan 24, 2026
Original AVIF files don't get deleted Open

[Plugin] Modern Image Formats [Type] Bug

WordPress/performance#2358 · 3 comments · 1 reaction · 1 assignee · Opened Jan 20, 2026
Enhancement: Page speed metrics in preview Open

[Plugin] Performance Lab

Difficulty 5/5 Over a week Newbie friendliness 35/100

WordPress/performance#2342 · 3 comments · 2 reactions · Opened Jan 12, 2026
Plugin Proposal: Manage inserting of Code Snippets Open

[Type] Plugin Proposal

Difficulty 5/5 Over a week Newbie friendliness 20/100

WordPress/performance#2322 · 2 comments · 1 reaction · Opened Jan 5, 2026
Add support for chronological and pagination transitions Open

[Plugin] View Transitions [Type] Enhancement

WordPress/performance#2318 · 4 comments · 1 assignee · Opened Jan 2, 2026
Add support for customizing transition animation duration Open

[Plugin] View Transitions

Difficulty 4/5 3-5 days Newbie friendliness 35/100

WordPress/performance#2317 · Opened Jan 2, 2026
Image Prioritizer causes 502 Bad Gateway due to oversized Link response headers (Nginx reverse proxy) Open

[Plugin] Image Prioritizer [Type] Bug

Difficulty 4/5 3-5 days Newbie friendliness 48/100

WordPress/performance#2304 · 7 comments · Opened Dec 17, 2025
Consider supplying modern image format in response to `wp_get_attachment_image()` Open

[Plugin] Modern Image Formats [Type] Enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

WordPress/performance#2299 · 1 comment · 1 reaction · Opened Dec 15, 2025
Sunset the Web Worker Offloading plugin Open

[Plugin] Web Worker Offloading

Difficulty 5/5 Over a week Newbie friendliness 35/100

WordPress/performance#2284 · 11 comments · 2 reactions · Opened Dec 2, 2025
Not working with WPML Media Translation Open

[Plugin] Modern Image Formats [Type] Bug

Difficulty 4/5 3-5 days Newbie friendliness 38/100

WordPress/performance#2283 · Opened Dec 2, 2025
Allow Embed Optimizer to work in Classic block and with Classic Editor Open

[Plugin] Embed Optimizer [Type] Enhancement ContributorDay

Difficulty 4/5 3-5 days Newbie friendliness 45/100

WordPress/performance#2226 · Opened Oct 16, 2025
Leverage template enhancement output buffer for Server Timing in WP 6.9 Open

[Plugin] Performance Lab [Type] Enhancement ContributorDay

Difficulty 3/5 1-2 days Newbie friendliness 68/100

WordPress/performance#2225 · 2 comments · Opened Oct 15, 2025
Reuse template enhancement output buffer in Optimization Detective for WP 6.9 Open

[Plugin] Optimization Detective [Type] Enhancement ContributorDay

Difficulty 2/5 1-3 hours Newbie friendliness 72/100

WordPress/performance#2224 · 2 comments · 1 reaction · Opened Oct 15, 2025
Reduce maximum image size used as background image based on container width Open

[Plugin] Enhanced Responsive Images [Plugin] Image Prioritizer [Type] Enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

WordPress/performance#2216 · 5 comments · 2 reactions · Opened Oct 13, 2025
Consider generating fallback JPEG/PNG when a WebP/AVIF is uploaded originally Open

[Plugin] Modern Image Formats [Type] Enhancement

Difficulty 4/5 3-5 days Newbie friendliness 35/100

WordPress/performance#2215 · 2 comments · 4 reactions · Opened Oct 10, 2025
Show cards for installed plugins when external requests are disabled (or there is a network error) Open

[Plugin] Performance Lab [Type] Enhancement

Difficulty 3/5 1-2 days Newbie friendliness 45/100

WordPress/performance#2189 · Opened Sep 24, 2025
Modern Image Formats interfering with image cropping Open

[Type] Bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

WordPress/performance#2123 · 2 comments · Opened Aug 11, 2025
Investigate extended lifetime shared workers for sending URL Metric data Open

[Plugin] Optimization Detective [Type] Enhancement

Difficulty 5/5 Over a week Newbie friendliness 30/100

WordPress/performance#2107 · 1 comment · 1 reaction · Opened Aug 2, 2025
View Transitions: Settings Description Open

[Plugin] View Transitions [Type] Documentation Needs Discussion

Difficulty 3/5 1-2 days Newbie friendliness 35/100

WordPress/performance#2089 · 6 comments · Opened Jul 18, 2025
View Transitions: Provide a clean mechanism for disabling the Settings UI Open

[Plugin] View Transitions

Difficulty 3/5 1-2 days Newbie friendliness 35/100

WordPress/performance#2086 · 1 comment · Opened Jul 16, 2025
Proposal: Just-In-Time Block CSS Open

[Plugin] Optimization Detective [Type] Enhancement Needs Discussion

Difficulty 5/5 Over a week Newbie friendliness 28/100

WordPress/performance#2076 · 7 comments · 1 reaction · Opened Jul 7, 2025
Plugin deploy workflow does not work for initial plugin deployment Open

[Type] Bug Infrastructure

Difficulty 3/5 1-2 days Newbie friendliness 45/100

WordPress/performance#2032 · 1 comment · Opened Jun 2, 2025
Upgrade web-vitals to v5 and leverage new features Open

[Plugin] Optimization Detective [Type] Enhancement

WordPress/performance#1993 · 6 comments · 1 assignee · Opened Apr 23, 2025
Explore use of the `fetchLater` API should be used instead of using keepalive `fetch` at `pagehide` when available Open

[Plugin] Optimization Detective [Type] Enhancement

WordPress/performance#1970 · 6 comments · 1 assignee · Opened Apr 3, 2025
Should Image Prioritizer explicitly mark `IMG` tags which are never LCP elements as `fetchpriority=low` Open

[Plugin] Image Prioritizer Needs Discussion

Difficulty 5/5 Over a week Newbie friendliness 25/100

WordPress/performance#1967 · 3 comments · Opened Apr 2, 2025
Optimization Detective's XPath expressions in HTML can be erroneously interpreted as JS/CSS comments Open

[Plugin] Optimization Detective [Type] Bug

WordPress/performance#1947 · 6 comments · 1 reaction · 1 assignee · Opened Mar 19, 2025
Configure Codecov for Per-Directory Coverage Badges Open

Infrastructure

WordPress/performance#1944 · 5 comments · 2 assignees · Opened Mar 18, 2025
Methods for inserting HTML should be exposed on `OD_Template_Optimization_Context` for before or after all tags have been visited Open

[Plugin] Embed Optimizer [Plugin] Image Prioritizer [Plugin] Optimization Detective [Type] Enhancement

WordPress/performance#1931 · 12 comments · 1 assignee · Opened Mar 17, 2025
Horizontal scroll on mobile devices when picture tag is enabled (Modern Image Formats) Open

[Plugin] Modern Image Formats [Type] Bug

Difficulty 3/5 1-2 days Newbie friendliness 52/100

WordPress/performance#1918 · 6 comments · 1 reaction · Opened Mar 11, 2025

WordPress/performance

Get new issues in your inbox