Image optimization & Lazy Load by Optimole


What makes Optimole so special?

  • Smaller images. Same quality
  • Fully automated; set and forget
  • Supports all image types
  • Supports both Retina and WebP images
  • Machine Learning(ML) powered automatic compression
  • AVIF format support for lower image size
  • Cloud image library support
  • Serves images from a global CDN for free
  • Optimizes based on the visitor’s actual device (no more guesswork and width estimations)
  • Full support for page builders like Elementor
  • Lazy load without jQuery (better)
  • Fully functional free version (we have paid plans as well)

Optimole is the all-in-one solution to all of your image optimization needs. With full automation and a range of evolutionary features, Optimole makes it easy to clean up your heavy images and bloaty pages.

Optimole optimizes your images in real-time with a cloud-based system to speed up your website and deliver high-quality images perfectly sized for every device. With a one-click setup and minimal footprint, you can start improving your site in minutes.

You’ll be free to concentrate on other aspects of your site with Optimole’s set and forget image optimization.

So, if you have been looking for one plugin that provides lazy loading with a CDN and perfectly sized images, then Optimole is perfect for you.

How does it do all these great things?
Optimole’s format based optimization is handled in the cloud on a case-by-case basis. Once you have the plugin installed, Optimole will replace all of your image URLs with cloud-based URLs. We don’t replace any images on your website, we compress images on the fly.
When the image is requested, Optimole will apply the specific transformations required by the device and deliver it to your visitors. This means every image is perfectly sized for every device. The final result will be cached for a month to ensure ongoing fast delivery and more site speed.

How many images can be optimized?
With the basic plan, you will be able to optimize unmetered number of images for up to 5k monthly visits. All delivered from more than 450+ locations around the globe.
Better yet. The free version is fully functional and includes all of the following great features:

Format Based Optimization
Our cloud-based transformation process means we can optimize images based on the format as well as serve images in next-gen formats. If your visitor is using a WebP capable browser, then Optimole will convert to WebP the image and send it to their device. AVIF support included.

Cloud Library support
Offload your website images directly to Optimole Cloud and save storage space on your server. Cross share images between your all your websites connected to Optimole.

Image Optimization
Our algorithms crunch the numbers to provide the best lossy or lossless optimization for the best-looking image at the smallest size using Machine Learning(ML) powered compression.

Exact Used Size
Optimole will use just one image and resize it delivering a responsive image to fit perfectly on your visitors’ devices. No more awkward guesses at potential screen widths. Serve scaled images instantly.

Retina Support
Optimole can detect Retina screens and deliver an image with the perfect Digital Pixel Ratio (DPR).

Smart Cropping
If you’d like to keep the most interesting part of an image; then you can enable smart cropping to help keep the image well sized without losing focus.

No Content Shifting
The lazy load option defer offscreen images and is perfectly sized for the container to provide a seamless viewing experience without any content shifting.

Who has time for adding watermarks? Optimole will do the hard work for you. Just set it up and pick your preferred location and Optimole will add the watermark to all of your future images.

Downgrade Quality For Slower Connections
Optimole provides an option to downgrade the image quality when it detects a slower network. Efficiently encode images by making up to 40% smaller with this neat feature to help visitors in a bottleneck.

Optimole loves page builders and has unique tweaks to solve image replacements. It also has full compatibility with the new block editor since WordPress 5.0

Optimole provides free access to a AWS CloudFront CDN with edge locations in more than 200 cities around the globe.

What About Security?
The stripped EXGIF data is not stored on our service. Optimole likes to work behind the scenes, and won’t interact with your site’s visitors. No data is collected but you can check the Terms of Service

Smooth And Clean
Optimole can be installed in a few clicks and then left in the back-end to do its job. Not happy with it? Optimole has a clean uninstall and your site will be just as before Optimole was installed.

Go Pro
Premium users will be able to optimize images starting with more than 25k monthly active users. Images in the Premium plan are served from AWS Cloudfront with over 200 locations all over the world.


  • Welcome screen
  • Connect screen
  • Plugin dashboard
  • Plugin settings


The following are the steps to install the OptiMole plugin

  1. In your WordPress Administration Panels, click on Add New option under Plugins from the menu.
    Click on upload at the top.
  2. Browse the location and select the OptiMole Plugin and click install now.
  3. Go to Media -> OptiMole and follow in the instructions on how to enable the service.


How many images I can optimize with each plan?

The number of images that you can optimize or store is unlimited, we care only about the number of visits you have per month.

What happens if I exceed plan limits?

Once you exceed these, we will contact you and kindly ask to upgrade to the plan that fits you best.

What Content Delivery Network (CDN) do you use?

For both FREE and Paid plans we use AWS CloudFront CDN with more than 200 locations around the globe.

I’m already using a CDN, can I use that instead of yours ?

Short answer, YES. You will only need to whitelist the domain of your existing CDN for Optimole to pick images stored there.

I’m already using an image optimization plugin, why should I switch to Optimole?

You don’t need to change your existing optimization plugin, image optimization is just a small part of what we do, if you are happy with ShortPixel for e.g, feel free to continue to use it, Optimole would then take care only of serving your image at the RIGHT size, advanced cropping and smart lazy-loading.

Does Optimole handle images from Ajax content ?

Yes, we do. By default, Optimole handle images delivered from your ajax content from admin-ajax.php ( not logged in users ) as well as WordPress REST API routes.

Can I remove the blurry placeholder from the lazyload effect ?

Yes, you can. You only need to toggle this feature in the plugin as explained per this doc –

Will the original images be deleted?

We use your original images as sources when deliver the optimized images. Unless you want to remove images from your server to save some space with Cloud Library by offloading images to the cloud as explained here –

What is the difference between the Auto, High, Medium, Low compression levels?

A higher compression might result in a small loss of image quality. Selecting the auto level will let Optimole choose the minimum size with no loss in the quality of your picture.

I used Kraken, Shortpixel, Optimus, EWWW or WP Smush, Imagify will Optimole further optimize my images?

Yes, Optimole will also take care of serving your image at the RIGHT size for your visitors and optimize them to the best possible format for their browser.

Which formats can be optimized ?

For now we support jpg, png and svg format.

Does Optimole automatically serve WebP for Chrome users ?

Yes. We automatically detect user browser and serve WebP if is supported, otherwise we optimize the image in the original format.

Can I disable lazyload for PNG images ?

Yes. You need to add define("OPTML_DISABLE_PNG_LAZYLOAD",true); to your wp-config.php file.

You can also use plugin’s UI and exclude images by their type as explained here –

Can I disable optimization for a certain image ?

Yes, you can exclude certain image by its name as explained here –

In case you’re tech-savvy and want programatically exclude images by some conditions you can follow this code snippet and replace the sample image with the one you need or have other conditions:

add_filter('optml_dont_replace_url', function( $old, $url ) {
    if ( $url === '' ) {
        return true;
    return $old;

}, 10, 2);


May 24, 2023 1 reply
Outil parfait et facile à utiliser pour l'optimisation des images téléversées.
May 19, 2023 1 reply
I have tested most of the image optimization plugins for speed and the Optimole plugin has a big difference comparing to others.
May 17, 2023 1 reply
It is really useful an so intuitive - I've found Exclusions very fast. The Dashboard looks convenient and images look nice and work fast.
Read all 500 reviews

Contributors & Developers

“Image optimization & Lazy Load by Optimole” is open source software. The following people have contributed to this plugin.


“Image optimization & Lazy Load by Optimole” has been translated into 8 locales. Thank you to the translators for their contributions.

Translate “Image optimization & Lazy Load by Optimole” into your language.

Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.


Version 3.7.0 (2023-05-15)

New Features

  • Best Format Optimization: Implemented a system that automatically chooses the optimal image format, based on smallest resulting file size, to enhance site loading speed.
  • Media Library Folders: Improved browsing experience in the Media Library by adding the option to organize images into folders.
  • Metadata Strip Option: Introduced an option to enable/disable the stripping of metadata (EXIF, IPTC, etc.) from the resulting image, providing users with more control over their content.
  • Noscript Tag: Added a new option to disable the noscript tag in settings, providing more flexibility in configuring your site.
  • Visit Stats by Domain: Introduced a feature to display visit statistics by domain, aiding in traffic analysis and site optimization.
  • Background Lazyload: Added compatibility for background lazyload with both Otter Blocks and the core cover block, improving page load times.
  • Hide API Key: For enhanced security, API keys are now hidden by default.


  • Media Library Stats Formatting: Improved number formatting for more readable Media Library statistics.
  • Invoices Redesign: Enhanced the design of invoices for better readability and user experience.
  • User Experience on Fresh Installs: Improved the user experience of the last images section on fresh installs, providing a more intuitive and engaging user interface.
  • CDN Locations: Updated the number of CDN locations to 450, offering improved content delivery speeds globally.
  • Generic Placeholder: Generic placeholders are now enabled by default.
  • Video and Iframe Lazyload: Lazyload is now enabled by default for videos and iframes to improve page load times.

Bug Fixes

  • AVIF Option Bug: Fixed an issue where the AVIF option was causing Microsoft Edge to fallback to JPEG/PNG instead of the intended WEBP format.
  • Divi Blog Archive Pagination: Resolved a bug that was preventing pagination from working on Divi blog archive templates when Optimole lazyloading was activated.
  • PHP 8.2 Compatibility: Fixed compatibility issues with PHP 8.2, ensuring smooth functionality across different PHP environments.
  • View Sample Image Button: Fixed the behaviour of the ‘View Sample Image’ button to work as intended.
  • 3rd Party Plugin Exclusions: Resolved an issue where images injected by 3rd party plugins were ignoring exclusions in some cases.
  • Search Bar Refresh: Fixed an issue where the search bar required a page refresh when displaying no results.
  • Upgrade Button Behaviour: Fixed an issue with the behaviour of the ‘Upgrade’ button in dashboard cards.
  • Display of Large Image Names: Fixed a display issue for images with larger names, ensuring all image names are displayed correctly.
  • Login and Signup Form Validation: Fixed validation errors on the Login and Signup forms to ensure accurate data entry.

Version 3.6.1 (2023-04-09)

Bug Fixes

  • Posts Screen Error: Resolved an issue with the last releases that show an error on the Posts screen.

Version 3.6.0 (2023-04-06)


  • Initial Setup Speed: Warmed up the cache on connect to speed up the initial setup process, providing a more efficient and seamless user experience.
  • Iframe Lazyload: Enhanced the iframe lazyload feature by improving conflict detection mechanisms to avoid issues with other plugins or themes.

Bug Fixes

  • RSS Feed Lazyload: Resolved an issue where lazyload replacements were not functioning correctly on RSS feeds.
  • Elementor CSS Image Replacement: Fixed compatibility issues with newer versions of the Elementor page builder, ensuring proper CSS image replacement.
  • Bullet Symbol Filenames: Fixed a bug where images with a bullet symbol in the filename were not being optimized correctly.

New Features

  • SVG Upload Compatibility: Added support for SVG file uploads when Optimole is installed, allowing users to work with this popular image format.
  • Central Dashboard Image Upload: Added the ability to upload images directly to the central dashboard at for more convenient management.
  • Export Offloaded Source Images: Implemented the ability to export source images offloaded to Optimole, giving users more control over their image assets.


  • Dependencies and WordPress Compatibility: Updated dependencies and ensured compatibility with the latest tested WordPress version, guaranteeing smooth integration with the platform.

Version 3.5.7 (2023-02-23)

  • Improved media rollback stability
  • Updated GIF lazyload and video conversion default exclusions
  • Added notification for existing accounts on auto connect

Version 3.5.6 (2023-01-31)

  • Improved video lazyload

Version 3.5.5 (2023-01-18)

  • Updated iframe lazyload exclusion flags to include the default flags
  • Fixed offload media compatibility with all php versions above 5.4

Version 3.5.4 (2023-01-06)

  • Fixed image deduplication on media offload

Version 3.5.3 (2022-12-12)

  • Improve compatibility with WPML plugin

Version 3.5.2 (2022-11-11)

  • Fixed media offload nonce update

Version 3.5.1 (2022-11-04)

  • Improve media offload estimation time.
  • Improve gif to video conversion.
  • Accessibility improvements to docs and external links.
  • Improve media offload process for sites with thousands of images.
  • Improve welcome notice

Version 3.5.0 (2022-10-17)

  • Improved images offload speed by marking processed pages
  • Adds conflict validation before the rollback process
  • Updated the logging for images that fail when offloading
  • Enhance Elementor compatibility

Version 3.4.6 (2022-09-08)

  • Updated cache buster format
  • Adds validation for width/height values according to HTML standards

Version 3.4.5 (2022-08-22)


  • Allows users to add cropped image sizes from within the plugin settings
  • Adds an option to exclude a page path from optimization using exact matching
  • Adds the option to create and connect an account with one click
  • Adds filter, optml_keep_copyright , to control if image optimization should keep copyright metadata


  • Enhances compatibility with Beaver builder to optimize images in javascript files
  • Enhances compatibility with Cache enabler to use the latest plugin’s filters and clears page cache when Optimole’s settings are updated
  • Updates compatibility with Divi theme/builder to optimize images in the static css/js files and regenerate those files when Optimole’s settings are updated
  • Enhances compatibility with Elementor to update the optimized images in the generated css files upon changing Optimole’s settings
  • Adds the latest lazyload exclusion flags for Slider Revolution
  • Enhances W3 Total Cache compatibility to clear the cache when Optimole’s settings are updated
  • Updates compatibility with YITH WooCommerce Quick View to optimize quick view images

Version 3.4.4 (2022-07-14)

  • Enhance WooCommerce and WPBakery compatibilities when users are offloading the images to Optimole cloud.
  • Improve compatibility with all plugins that are editing the media modal tabs.

Version 3.4.3 (2022-05-30)

  • Enhance Thrive compatibility when users are offloading the images to Optimole cloud.

Version 3.4.2 (2022-05-25)

  • Fix edge cases for auto allowing domain on site migration.

Version 3.4.1 (2022-05-10)

  • Auto allow domain when the website URL is being changed, such as moving from production -> staging or viceversa

Version 3.4.0 (2022-04-18)

  • Adds Machine Learning(ML) quality compression which will predict the right quality for your image in order to get the smallest possible size with minimum perceived quality losses, delivering images with ~40% smaller size than the current solution.
  • Adds AVIF format conversion enabled by default for everyone.
  • Fix edge case when content URL is relative and prevents Optimole from replacing the URLs.

Version 3.3.5 (2022-03-31)


  • updates compatibility with FacetWP
  • fixes warning regarding image size calculation

Version 3.3.4 (2022-03-25)

  • Add support for HEIC/AVIF formats as source input

Version 3.3.3 (2022-03-18)


  • adds filter optml_gif_to_video_flags to exclude GIF placeholders from video conversion
  • adds compatibility with Avada live to remove replacement in edit mode

Version 3.3.2 (2022-03-17)


  • Hardening security for users with administrator roles.
  • Update dependencies to the latest version.

Version 3.3.1 (2022-03-10)


  • Adds filter, optml_should_avif_ext , for more control over which images are converted to AVIF, by default SVG images are not converted


  • Plugin interface header display size on safari

Version 3.3.0 (2022-02-25)


  • Adds opt-in AVIF compatibility, improving the image optimization savings on average with at 30%
  • Major dashboard UI/UX improvements make it cleaner and easier to use.
  • Adds separate functionality for clearing only CSS/JS when Optimole is serving those.
  • Improve Optimole Cloud optimizations speed and performances

Version 3.2.1 (2021-10-01)

  • Fix issue when the quota exceeded message shows up on new connections.
  • Fix local JS loading of lazyload library.

Version 3.2.0 (2021-09-28)


  • Improve media cloud offloading by making faster image handling for large sites


  • Adds compatibility with FaceWP
  • Improve compatibility with WP Rest Cache plugin
  • Improve compatibility with Woocommerce variations plugin
  • Improve usage of WP Rest API endpoints
  • Improve handling of files with non-media files which are stored as attachments
  • Fix print of pages which uses Optimole lazyload

Version 3.1.3 (2021-08-06)

  • Preserve selected custom domain on stats refresh when multiple custom domains are used.

Version 3.1.2 (2021-08-04)

  • Adds a filter to force replacements as optml_force_replacement
  • Fix content path being root directory

Version 3.1.1 (2021-05-31)

  • Adds option to setup API key via wp-config variables fix #314 as OPTIML_API_KEY
  • Fix lazyload on video tag working improperly #368
  • Adds filter for Optimole processed URLs as optml_processed_url
  • Fix error message when a user is already registered with the same email

Version 3.1.0 (2021-05-13)

  • Adds support for multiple custom domains
  • Adds option to skip first X images from lazyloading
  • Adds support for async decoding for image tags
  • Adds support for video lazyload
  • Improve media offloading and rollback mechanism
  • Adds support for the new watermark feature

Version 3.0.1 (2021-03-16)

  • improve behavior on browsers that don’t support javascript, causing issues with some 3rd party plugins.
  • server lazyload script from the same domain avoiding extra DNS checks and improving loading

Version 3.0.0 (2021-02-23)


  • Adds option to offload images to Optimole Cloud, saving space on your server storage.
  • Adds Optimole Cloud integration directly in the Media library, allowing you to cross-share images from all the connected sites.


  • Improve compatibility with Background images lazyload for Elementor

Version 2.5.7 (2020-12-17)


  • Adds iframe style for lazyloading only when the iframe is used on the current page
  • Improve lazyload CLS web vital
  • Adds compatibility with Smart Search for Woocommerce


  • Adds option to set the plugin settings via wp-configconstants
  • Adds more option to set plugin settings via wp cli

See all versions.