Smush – Optimize, Compress and Lazy Load Images

Smush – Optimize, Compress and Lazy Load Images

Compress images & optimize images with built-in lossless compression, lazy load, WebP conversion, and resize detection to make your site load amaz …
Rating:
4.8
star-rating-1star-rating-2star-rating-3star-rating-4star-rating-5
Active Installations:
1000000+
Last Updated:
Jun 25, 2025
WordPress Version:
6.4 or higher
Tested up to:
6.8.1

Faster Loading Web Pages

Optimize, resize, compress

Exclusive Pro Benefits

Uninterrupted optimization, 5x compression

Next-Gen Image Formats

WebP, AVIF conversion

Bulk Image Optimization

One-click optimization

3.20.0 ( 2025-06-25 )

  • New: Lazy load YouTube and Vimeo videos to improve page load speed
  • Fix: Resize Detection feature sometimes doesn’t work correctly with Lazy Load
  • Fix: Layout shift with lazy loading
  • Fix: Timeout error is returned for some transparent PNGs when Smush Mode is set to Basic
  • Fix: Not all options are deleted from the database after uninstalling
  • Fix: All-In-One Security incorrectly reporting issue due to Smush loopback check

3.19.1 ( 2025-05-29 )

  • Improvement: Only detect LCP element above the fold
  • Improvement: Add fetchpriority high to LCP element
  • Improvement: Ensure compatibility of LCP feature with popular caching plugins
  • Improvement: Ability to exclude pages from LCP preloading
  • Improvement: Ability to clear LCP cache
  • Fix: LCP element not located in certain scenarios

3.19.0 ( 2025-05-12 )

  • New: Preload critical images to improve page load speed and resolve LCP (Largest Contentful Paint) warnings
  • Fix: Filenames with Chinese characters were automatically converted to Unicode, causing display issues
  • Fix: Lazyload module removes the background size attribute from inline CSS
  • Fix: Picture tags are lazy loaded even in excluded areas

3.18.1 ( 2025-04-24 )

  • Improvement: WP 6.8 compatibility
  • Improvement: Add a new menu item to help you discover other free plugins by WPMU DEV and more

3.18.0 ( 2025-03-19 )

  • New: Reduced image filesize at better visual quality with new AVIF conversion!
  • Improvement: White label improvements
  • Improvement: Better stats for WebP conversion
  • Improvement: Compatibility check and minor fixes for PHP 8.4
  • Fix: Some images listed as not optimized after Local WebP conversion
  • Fix: CDN forcing browsers to load full-sized images for smaller container size

3.17.1 ( 2025-02-10 )

  • Improvement: Security hardening
  • Improvement: Minor code improvements

3.17.0 ( 2025-02-03 )

  • New: Added a UI option to exclude specific images from Smush CDN.
  • Improvement: Use streams to send full image to the Smush API
  • Improvement: Disabled Noscript tags by default to prevent broken images and potential performance regressions.
  • Improvement: Improved WPML compatibility for seamless multilingual support.
  • Improvement: Reduced memory consumption during the Smush process
  • Improvement: Better directory Smush compatibility with Flywheel
  • Fix: Number of optimized images inaccurate
  • Fix: When Local WebP Direct Method and Lazy Load are enabled, images inside picture tags not being served as WebP
  • Fix: Error “Server configurations haven’t been applied yet” shown unnecessarily sometimes
  • Fix: CDN slowing down page load due to unnecessary DB queries
  • Fix: Divi breaking Smush CDN image resizing
  • Fix: Auto-resize feature not adding new sizes when srcset is already present in img tag
  • Fix: Excluded lazy loading placeholders from the CDN to resolve conflicts and prevent broken images.
  • Fix: Added WP 6.7 compatibility fixes.
  • Fix: Prevent broken images on Smush CDN when using relative links
  • Fix: Hummingbird Performance Test conflicts
  • Fix: Missing thumbnails when using PNG to JPG conversions
  • Fix: Unicode characters in image URLs causing issues
  • Fix: Improved compatibility with native lazy loading
  • Fix: PHP errors and warnings
  • Fix: Conflict with Formidable Forms
  • Fix: Avoid image fetch errors

3.16.6 ( 2024-07-30 )

  • Fix: PHP warnings
  • Improvement: Compatibility with WP 6.6

3.16.5 ( 2024-06-20 )

  • Improvement: Security improvements
  • Fix: Compatibility issue with Divi

3.16.4 ( 2024-05-23 )

  • Fix: Loopback error shown unnecessarily for some sites
  • Improvement: Better UI for the loopback error

3.16.3 ( 2024-05-15 )

  • Improvement: Better handling of rotated images
  • Improvement: Better pre-flight checks before bulk Smush is started
  • Fix: Performance issues in CDN and webp link replacement functionality
  • Fix: Bulk Smush performance issues
  • Fix: Compatibility issue with wp.com

3.16.2 ( 2024-04-17 )

  • Fix: LazyLoad module not working correctly for picture elements in certain situations
  • Fix: LazyLoad module not working correctly for some CSS variables
  • Fix: Better handling of !important CSS rules by the LazyLoad module
  • Fix: Performance issues on some WooCommerce pages

3.16.1 ( 2024-03-27 )

  • Improvement: Better compatibility with page builders
  • Improvement: General code improvements
  • Fix: WP Offload integration preventing some formats from getting offloaded

3.16.0 ( 2024-03-06 )

  • New: Directly serve Local Webp images, no rewrite rules required!
  • New: Support for inline style tags in CDN and Local WebP modules
  • New: Support for multiple background images in CDN and Local WebP modules
  • New: Better support for relative links in CDN and Local WebP modules
  • New: Better REST API support in CDN and Local WebP modules
  • New: CDN and Local WebP images served in WooCommerce REST API responses
  • New: Local WebP compatibility with Windows IIS servers
  • New: Local WebP compatibility with bedrock
  • New: Local WebP compatibility with Litespeed
  • New: Local WebP compatibility with Cloudways
  • New: Lazy loading of background images
  • Fix: Local WebP redirection doesn’t work for images with special characters
  • Fix: Free version of Smush creating smush-webp folder when activated
  • Fix: Extra slash added to image URLs during optimization
  • Fix: WP 6.3 compatibility – Skip lazyload for high priority images

3.15.5 ( 2024-02-06 )

  • Improvement: Update the number of CDN locations
  • Improvement: Minor copy and UI adjustments

3.15.4 ( 2024-01-23 )

  • Fix: Media library scan gets stuck on some websites
  • Improvement: Minor copy and UI changes

3.15.3 ( 2023-12-20 )

  • Improvement: Code stability improvements

3.15.2 ( 2023-12-06 )

  • Fix: Compatibility issues with WP Offload Media integration
  • Fix: Resize module deletes thumbnail when there is a naming conflict

3.15.1 ( 2023-11-15 )

  • Improvement: Code stability improvements

3.15.0 ( 2023-10-11 )

  • Improvement: Image size limit increased for pro version
  • Fix: Query running frequently and causing performance issues on some sites

3.14.2 ( 2023-08-23 )

  • Fix: Media library scanner not identifying some MariaDB versions correctly
  • Improvement: Code improvements

3.14.1 ( 2023-07-24 )

  • Improvement: Minor code improvements and fixes

3.14.0 ( 2023-07-17 )

  • New: Ultra Smush – Level up your image compression, while preserving remarkable image quality
  • Fix: Resolved issue with image resize in WP versions < 6.0
  • Fix: Resolved PHP 8.x error on GoDaddy Managed WP Hosting
  • Fix: Other minor bug fixes and UI improvements

3.13.2 ( 2023-07-05 )

  • Improvement: Small code and text improvements

3.13.1 ( 2023-06-13 )

  • Improvement: Better memory management during scans
  • Fix: Dot added to file path when year and month directories disabled
  • Fix: Compatibility issue with WP.com
  • Fix: Rename config functionality not working
  • Fix: Compatibility issue with WP Offload Media
  • Fix: PHP warnings
  • Fix: Duplicate query

3.13.0 ( 2023-05-30 )

  • New: Scan for detecting changes in the media library
  • Improvement: Performance improvements on large sites
  • Improvement: Code refactoring
  • Fix: PHP warnings and notices
  • Fix: Missing comments for translation strings that have placeholders in them
  • Fix: Compatibility issues with WP Offload Media
  • Fix: Timeout on Smush pages when there are more than 200k images
  • Fix: Images incorrectly marked as requiring resmush
  • Fix: Ignore link stuck in Grid Layout mode in the media library

3.12.6 ( 2023-03-09 )

  • Enhance: Compatibility with WordPress 6.2.
  • Fix: Upgrade modal reappears after closing

3.12.5 ( 2023-01-18 )

  • Fix: CDN notice issue
  • Fix: PHP 8.2 compatibility warnings
  • Fix: Smush acting as free on staging

3.12.4 ( 2022-11-17 )

  • Improvement: Code and compatibility improvements

3.12.3 ( 2022-10-24 )

  • Fix: Free to pro upgrade issue

3.12.2 ( 2022-10-19 )

  • Improvement: Security hardening
  • Fix: Issues on older PHP versions

3.12.1 ( 2022-10-11 )

  • Fix: PHP error on non-English language sites

3.12.0 ( 2022-10-11 )

  • New: Bulk smush images in the background!
  • New: Revised limits on bulk image optimization
  • New: Better GDPR compliance by replacing Google fonts with Bunny fonts
  • New: Filter on media library page to view media items with errors
  • New: Option to receive an email once bulk smush is complete
  • Fix: Some images incorrectly selected for resmush
  • Fix: Database error while converting PNG to JPG on WordPress 6.1 Beta

3.11.1 ( 2022-08-19 )

  • Fix: Fallback to sequential processing when parallel processing not possible

3.11.0 ( 2022-08-11 )

  • New: Smush all image sizes in parallel for improved performance
  • Improvement: Code improvements

3.10.3 ( 2022-07-14 )

  • Enhance: CDN activation process
  • Enhance: Improve media library image filters
  • Enhance: CDN compatibility with Avada theme
  • Enhance: Add notice about disabled folders in directory Smush module
  • Fix: Errors table UI on bulk smush page
  • Fix: Bulk smush UI when images have been removed when page was already loaded
  • Fix: Cron job of logger library not running properly
  • Fix: Remove tools meta box from dashboard page
  • Fix: Recover image from NextGen Gallery button does not reset Smush data
  • Fix: Image dimensions meta does not reset after restoring a resized image in NextGen Gallery
  • Fix: Incorrect percent of total savings on Dashboard page
  • Fix: Pro feature enable/disable toggles are clickable in free version

3.10.2 ( 2022-06-16 )

  • Enhance: Data processing
  • Enhance: Database calls
  • Fix: Loading images from remote location

3.10.1 ( 2022-06-09 )

  • Fix: PHP error on dash page

3.10.0 ( 2022-06-09 )

  • New: Lossy compression is now free for all users
  • New: Summary meta box
  • Enhance: Move out image restore to bulk smush module
  • Enhance: Move out image resize detection to settings module
  • Enhance: Update opt-in notice design
  • Fix: Upsell notice logic
  • Fix: Skip image sizes not in WordPress format
  • Fix: Skip onboarding wizard if a config has been applied
  • Fix: Image sizes selector
  • Fix: Rename “Basic” config to “Default”
  • Fix: Do not show WebP notice in case of error
  • Fix: Auto compression does not work for NextGen Gallery
  • Fix: Settings link on Plugins page
  • Fix: Welcome modal does not close when we go to the Bulk Smush page

3.9.11 ( 2022-05-23 )

  • Enhance: Code quality
  • Fix: Minor code quality issues
  • Fix: Update internal libraries

3.9.10 ( 2022-05-17 )

  • New: Gravity Forms integration
  • New: smush_background_images_regex and smush_images_from_content_regex filters to adjust regex rules for finding images on the page
  • New: smush_cdn_before_process_background_src filter to adjust background image src
  • New: Add additional parameters to smush_skip_adding_srcset filter to allow disabling auto-resize for selected images
  • Enhance: Compatibility with WPBakery page builder
  • Enhance: Compatibility with Offload Media plugin
  • Enhance: Handling images via REST API endpoints
  • Fix: Directory Smush savings cached and not updated
  • Fix: “What’s new” modal not hiding if white label is enabled
  • Fix: Missing primary key on smush_dir_images table
  • Fix: Scaled images not being resized on resize settings change
  • Fix: Bulk Smush will now show all errors, instead of just the first 5
  • Fix: Animated GIF images not being excluded from bulk Smush
  • Fix: Only allow network wide activation of Smush

3.9.9 ( 2022-05-03 )

  • Enhance: Code quality
  • Enhance: Handling user input
  • Enhance: Update React modules to latest versions
  • Fix: XSS vulnerability when uploading modified configs

3.9.8 ( 2022-03-22 )

  • New: Add expiry header to Nginx template for WebP
  • New: Add wp_smush_webp_dir filter to customize WebP directory
  • Fix: XSS vulnerability
  • Fix: Disable submit button on Integrations page when no integrations available
  • Fix: CDN bandwidth limit status message
  • Fix: Text alignment issue on Bulk Smush page
  • Fix: Highlighting selected lazy load spinner with color accessibility
  • Fix: Compatibility issue with WP Offload Media 2.6.0
  • Fix: Undefined offset notice with certain WooCommerce themes

3.9.7 ( 2022-03-01 )

  • Fix: Local WebP is not activated on applying config after reset settings
  • Fix: Missing WebP file for WP scaled images
  • Fix: Fatal error on PHP 5.6
  • Fix: Compatibility issue with WP Offload Media

3.9.6 ( 2022-02-09 )

  • Enhance: Do not close the Directory Smush modal in case of error
  • Enhance: Tooltips in CDN module
  • Fix: Compatibility issue with PHP 8.1
  • Fix: “Choose Directory” button loading state in case of error
  • Fix: PNG to JPG conversion leaves behind some thumbnails after deleting the image
  • Fix: PNG images that need resizing don’t get converted to JPG
  • Fix: Issue creating the WebP test files
  • Fix: Incorrect unique file names during PNG to JPG conversion
  • Fix: Duplicate thumbnails while converting PNG to JPG
  • Fix: Auto refresh API status when updating to Pro version

3.9.5 ( 2022-01-25 )

  • Fix: Translation strings
  • Fix: Remove upsells
  • Enhance: Update admin menu icon

Changelog for previous versions.

Excellent optimization tool!

By juanmag on June 28, 2025

I love how it handles image compression without reducing quality. My site feels much faster now, and GTmetrix scores are looking great.

Excellent and easy to use

By rockymuc on June 24, 2025

Makes Site really faster. Compressed images still look pretty. Thank you for this excellent tool!

Great

By grzegorzjedrek on June 15, 2025

Smush works very well and offers a great user interface.

Muito bom!

By mavfonseca on June 12, 2025

Gostei muito do aplicativo. Interativo! Bom demais! Grato!

Pretty good!

By markymm on May 21, 2025

Quick and simple. Perfect.

Good plugin

By walkees on May 20, 2025

Works without any problem.

Top

By alickakio on May 17, 2025

Best

Very good plugin

By Mohamed Mahfouz Mostafa Ibrahim (mohamedmm1975) on May 12, 2025

This plugin makes the difference in performance. It's from the best plugins in WordPress

No Hassle and generous!

By hlangas on May 7, 2025

One of the best if not the only best free plans available out there!

Excellent plugin!!

By morlah on April 15, 2025

Thank you very much for this gift!

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