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Hummingbird Performance · Version history

Hummingbird Performance changelog and version history

Latest version
4.0.0
Nov 3, 2026 (6 days ago)
Releases
79
since 2017
In the last year
7
about one every 58 days
Tested up to
WordPress 7.1.4
PHP 7.4 or later

Releases each year

  • 20177 releases
  • 20189 releases
  • 20197 releases
  • 20205 releases
  • 20219 releases
  • 20227 releases
  • 20239 releases
  • 202412 releases
  • 202510 releases
  • 20264 releases

20264 releases

  1. Hummingbird Performance 4.0.0Latest

    • New: A fresh new look! Hummingbird has been completely redesigned for a cleaner, faster and more intuitive experience
    • New: Activity Logs
    • New: Settings are now saved automatically
    • Improvement: Improved Safe Mode flow
    • Improvement: Improved Clear Cache shortcut UI
    • Improvement: Added “Last name” field for email recipients
    • Improvement: CDN now serves your files automatically on demand instead of waiting for the asset optimization flow
    • Improvement: CDN now uses a new domain, assetcdn.net
    • Improvement: Security hardening
    • Fix: Performance test cooldown being bypassed, causing the test to get stuck at 99%
    • Fix: PHP notice when permanently deleting entries in Database Cleanup

  2. Hummingbird Performance 3.21.2

    • Fix: Performance Test Notification Report is not sent
    • Fix: Security hardening

  3. Hummingbird Performance 3.20.0

    • New: Improved error messaging when generating Critical CSS while site is in maintenance mode
    • Improvement: Refactored Safe Mode architecture with a centralized Safe Mode controller
    • Improvement: Improved Clear Cache button UX in admin area
    • Improvement: PHP 8.5 compatibility
    • Improvement: Prevent WordPress assets (e.g. dashicons) from loading in Asset Optimization when only needed for logged-in users
    • Improvement: Improved Asset Optimization compatibility with TranslatePress frontend editor
    • Improvement: Improved Critical CSS exclusion handling for Elementor
    • Improvement: Show confirmation notice when clearing individual cache types from the admin bar
    • Improvement: Show success message when “Clear Cache” is triggered from file change detection notice
    • Fix: Enable WPMU DEV CDN toggle in Settings not changing state
    • Fix: File location in Asset Optimization Settings saves after adding input
    • Fix: Asset Optimization including non-existent CSS files
    • Fix: Asset Optimization filters displaying assets incorrectly when WooCommerce and Advanced Coupons for WooCommerce are active together
    • Fix: Configs not including all Asset Optimization and Exclusion Optimization settings and exclusions
    • Fix: Outdated Defender bot trap URL being cached, causing 404 errors and bypassing bot protection
    • Fix: Incorrect script loading order and Asset Optimization not detecting some scripts
    • Fix: Extension search feature in Asset Optimization Dev Mode filter not functioning correctly
    • Fix: Error shown after regenerating Critical CSS
    • Fix: “Instant site health alerts and notifications” incorrectly shown in Hummingbird Pro Widget
    • Fix: PHP deprecated warnings for curl_close() in PHP 8.5
    • Fix: PHP warnings when reloading the Hummingbird Uptime page
    • Fix: PHP warnings after removing SmartCrawl or Defender while Hummingbird is active

  4. Hummingbird Performance 3.19.0

    • New: Success notification when cache is cleared from the admin bar
    • Improvement: Updated optimization labels in Hummingbird Onboarding Wizard Summary
    • Improvement: Enhanced Asset Optimization background file scan across all relevant locations
    • Improvement: Mobile-specific Above-the-Fold critical CSS is now supported on sites using Static Server Cache
    • Improvement: Improved caching plugin conflict detection to cover more popular caching solutions
    • Fix: Browser caching only updating Images when generating the server script for individual file types
    • Fix: Error in Debug log when Page caching is active
    • Fix: Custom post type cache not working when “Posts” cache is disabled
    • Fix: “Connect Site” button icon display issue
    • Fix: Fatal error when enabling Asset Optimization after activating Safe Mode

202510 releases

  1. Hummingbird Performance 3.18.1

    • Improvement: Security hardening

  2. Hummingbird Performance 3.18.0

    • New: Safe Mode now covers all plugin settings, allowing you to test any change in a sandbox environment before going live
    • New: Ability to run performance test in the safe mode
    • Improvement: Refined the UX for Critical CSS generation
    • Improvement: Enhanced Hummingbird Delay JS compatibility with Divi
    • Improvement: Automatically excluded specific WooCommerce files from Asset Optimization to prevent product image issues
    • Fix: Resolved an issue causing excessive cache folder size
    • Fix: Resolved Hummingbird Delay JS and Critical CSS conflicts with other plugins
    • Fix: Bulk Update issue in Asset Optimization Dev Mode
    • Fix: Minor UX and copy adjustments

  3. Hummingbird Performance 3.17.2

    • Improvement: Miscellaneous improvements

  4. Hummingbird Performance 3.17.1

    • Fix: Deletion of Asset Optimization database data sometimes not working

  5. Hummingbird Performance 3.16.0

    • Improvement: Restructure Asset Optimization modes
    • Improvement: Replace the Manual Asset Optimization tab with a Dev Mode link
    • Improvement: Asset Optimization Scan assets in the background
    • Fix: Enhance core files to prevent AO file overload by other plugins

  6. Hummingbird Performance 3.15.0

    • Improvement: Uptime Monitoring feature is now available for WPMU DEV Free Plan members
    • Improvement: Performance Notifications feature is now available for WPMU DEV Free Plan members
    • Fix: Homepage display change requires manual cache clearing
    • Fix: PHP warnings
    • Fix: Menu item position swap and styling missing
    • Fix: Hummingbird is not updating the Forminator CSS file upon form style update

  7. Hummingbird Performance 3.14.1

    • Fix: Prevent duplicate injection of JS delay script

  8. Hummingbird Performance 3.13.1

    • Improvement: WP 6.8 compatibility

  9. Hummingbird Performance 3.13.0

    • Improvement: Add new Google audits in Performance Test
    • Improvement: Whitelabel email notifications
    • Improvement: Ensure JS Delay, HB CDN, and Lazy Load work together
    • Improvement: Updated component versions
    • Improvement: Ensure compatibility with PHP 8.4
    • Improvement: Performance enhancements
    • Fix: The ‘Reset’ option in AO Settings does not reset Critical CSS and Font Optimization settings
    • Fix: WooCommerce “Disable Cart Fragments On > All Pages” is not behaving as expected
    • Fix: Critical CSS generation issue for taxonomy feed pages
    • Fix: Page Cache is not cleared automatically after saving menu from the Site Editor
    • Fix: Static Server Cache is not clearing on post update
    • Fix: Add wpdef_lockout_ to the default cookie exclusion list

  10. Hummingbird Performance 3.12.0

    • New: Option to clear Static Server Cache when a post/page is updated
    • New: UI option to exclude inline JS from the Delay JS feature
    • Improvement: Exclude Elementor assets from Asset Optimization (AO)
    • Improvement: Better compatibility with The Events Calendar plugin
    • Improvement: New option to switch back to the legacy textarea for Exclusion Optimization (EO) exclusion keywords
    • Improvement: New constant to completely skip the Asset Optimization (AO) module and use Exclusion Optimization (EO) only
    • Improvement: Core WP files are now marked clearly in Exclusion Optimization (EO) exclusions
    • Improvement: Compatibility check added for WPML
    • Fix: Critical CSS toggle in the Summary Box was not updating
    • Fix: Delay JS Exclusions and Critical CSS Exclusions Keyword not cleared when hitting enter
    • Fix: Manual Inclusions textarea expander not working on Critical CSS
    • Fix: Taxonomies not excluded from Critical CSS when Categories are excluded
    • Fix: Exclude files, plugins/themes and keywords from Critical CSS generation when they are added to exclusions
    • = 3.11.0 ( 2024-12-23 ) – New: Granular asset exclusion controls for Delay JS and Critical CSS, allowing easier adjustments and fine-tuning. – Improved: Enhanced asset optimization and Critical CSS generation by ignoring empty URLs and commented CSS, reducing errors. – Improved: Prioritized Critica…

202412 releases

  1. Hummingbird Performance 3.11.0

  2. Hummingbird Performance 3.10.0

    • New: Option to delay below-the-fold Critical CSS until user interaction for better performance
    • New: Separate Mobile CSS generation when using Above-the-fold Critical CSS for improved mobile performance
    • Improved: Better page caching and preloading for mobile devices for improved response times
    • Improved: Better Critical CSS handling for themes which do not pass explicit IDs
    • Improved: Added Critical CSS, Delay JS and Font Swapping options on the Setup wizard
    • Fix: Asset Optimization Compatibility issues with Woo cart and checkout pages

  3. Hummingbird Performance 3.9.4

    • Improvement: Improved WPML compatibility
    • Improvement: Improved Static Server Cache integration stability

  4. Hummingbird Performance 3.9.3

    • New: Viewport Meta Optimization for better mobile performance and responsiveness
    • Improvement: Font Swapping for inline CSS font declarations
    • Improvement: Caching compatibility with WooCommerce Multilingual & Multicurrency by WPML
    • Fix: file_get_contents preventing Hummingbird from loading scripts in JavaScript Delay module
    • Fix: PHP warnings generated by Performance test
    • Improvement: Redis Object Caching integration deprecated
    • Improvement: Legacy manual critical CSS deprecated (Replaced with automatic Critical CSS generation)
    • Improvement: Minor fixes and improvements for Static Server Cache (FastCGI) integration

  5. Hummingbird Performance 3.9.2

    • Improvement: Security hardening

  6. Hummingbird Performance 3.9.1

    • Fix: Whitelabel fixes
    • Improvement: General code improvements

  7. Hummingbird Performance 3.9.0

    • Improvement: Better integration with WPMU Dev hosting’s Static Server Cache
    • Improvement: Option to switch Font Swapping modes to fine tune performance
    • Improvement: Option to switch Font Preloading modes to fine tune performance
    • Improvement: Preload Caching is now enabled by default for Homepage when Page Caching is active
    • Improvement: Woo cart and checkout pages are excluded from optimization to prevent broken functionality
    • Improvement: Faster Critical CSS processing
    • Improvement: WP 6.6 compatibility
    • Fix: Google Site Kit compatibility with Asset Optimization
    • Fix: Relative URLs are now handled without errors when generating Critical CSS

  8. Hummingbird Performance 3.8.1

    • Fix: Font optimization causes issue with RSS feeds
    • Fix: PHP errors and warnings

  9. Hummingbird Performance 3.8.0

    • New: Load local fonts early with font preloading
    • New: Font swapping to ensure that text remains visible while webfont is downloading
    • Improvement: Better caching compatibility with popular third-party plugins
    • Improvement: Auto-populate CDN and web font domains in Advanced Tools > Preconnect
    • Fix: PHP warnings
    • Fix: Delay JS compatibility issue with Avada
    • Fix: Asset optimization bug fixes

  10. Hummingbird Performance 3.7.4

    • Improvement: Security hardening

  11. Hummingbird Performance 3.7.3

    • New: Replaced deprecated FID check with INP in performance test

  12. Hummingbird Performance 3.7.2

    • New: Use static IPs for Critical CSS service
    • Improvement: Ignore missing CSS files when generating Critical CSS
    • Fix: Avoid calling the Critical CSS service too frequently

20239 releases

  1. Hummingbird Performance 3.7.1

  2. Hummingbird Performance 3.7.0

  3. Hummingbird Performance 3.6.0

  4. Hummingbird Performance 3.5.0

  5. Hummingbird Performance 3.4.7

  6. Hummingbird Performance 3.4.6

  7. Hummingbird Performance 3.4.5

  8. Hummingbird Performance 3.4.4

  9. Hummingbird Performance 3.4.2

20227 releases

  1. Hummingbird Performance 3.4.0

  2. Hummingbird Performance 3.3.7

  3. Hummingbird Performance 3.3.6

  4. Hummingbird Performance 3.3.4

  5. Hummingbird Performance 3.3.3

  6. Hummingbird Performance 3.3.2

  7. Hummingbird Performance 3.3.0

20219 releases

  1. Hummingbird Performance 3.2.1

  2. Hummingbird Performance 3.1.3

  3. Hummingbird Performance 3.1.1

  4. Hummingbird Performance 3.1.0

  5. Hummingbird Performance 3.0.1

  6. Hummingbird Performance 2.7.4

  7. Hummingbird Performance 2.7.3

  8. Hummingbird Performance 2.7.2

  9. Hummingbird Performance 2.7.0

20205 releases

  1. Hummingbird Performance 2.6.2

  2. Hummingbird Performance 2.5.1

  3. Hummingbird Performance 2.4.2

  4. Hummingbird Performance 2.4.1

  5. Hummingbird Performance 2.4.0

20197 releases

  1. Hummingbird Performance 2.2.2

  2. Hummingbird Performance 2.1.1

  3. Hummingbird Performance 2.1.0

  4. Hummingbird Performance 2.0.1

  5. Hummingbird Performance 2.0.0.1

  6. Hummingbird Performance 1.9.4.1

  7. Hummingbird Performance 1.9.3

20189 releases

  1. Hummingbird Performance 1.9.2

  2. Hummingbird Performance 1.9.1

  3. Hummingbird Performance 1.9.0

  4. Hummingbird Performance 1.8.2

  5. Hummingbird Performance 1.8.1

  6. Hummingbird Performance 1.8.0.4

  7. Hummingbird Performance 1.8.0.2

  8. Hummingbird Performance 1.7.2

  9. Hummingbird Performance 1.7.1

20177 releases

  1. Hummingbird Performance 1.7.0.3

  2. Hummingbird Performance 1.6.2

  3. Hummingbird Performance 1.6.1

  4. Hummingbird Performance 1.6.0

  5. Hummingbird Performance 1.5.5

  6. Hummingbird Performance 1.5.4

  7. Hummingbird Performance 1.5.3

Questions about Hummingbird Performance’s releases

What is the latest version of Hummingbird Performance?

4.0.0, released on Nov 3, 2026 (6 days ago). It’s tested up to WordPress 7.1.4 and needs PHP 7.4 or later.

How often is Hummingbird Performance updated?

7 releases in the last year, about one every 58 days. Its first release on WordPress.org dates from July 2017.

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Release dates come from the day each version’s folder was made in Hummingbird Performance’s WordPress.org SVN repository; the notes from its readme’s changelog, as its authors wrote it.