Optimize all your images instantly and for free.
Cimo is a game-changer for media optimization. It optimizes, resizes, and converts your images instantly as you upload — even before the files are added to your Media Library.
Visit Cimo's website to learn more about how Cimo does things.
From WordPress' point of view, it's as if you optimized your image BEFORE your uploaded it. Now, this is next-next-gen image optimization.
Cimo works like magic, drag your large image file, and an optimized image will automatically appear in your Media Library. This ensures your website load speed is perfectly optimized by keeping image sizes minimal, without compromising quality.
- Unlimited usage - upload as many images as you want
- Instant optimization - virtually no waiting time
- No extra server load
- No extra bandwidth
- No external image-processing services
Note: Cimo works in all modern browsers (Chrome, Firefox, Edge, Opera). Image optimization currently doesn't work in Safari, images would just upload as they normally would, please use any of the browsers listed.
Image Optimization options:
- WebP quality – set the quality level for WebP conversion (1-100), defaults at 80%
- Max image dimension – automatically resize images to a maximum dimension while preserving aspect ratio
- WordPress automatic scaling – disable WordPress's built-in 2560px image scaling
- Thumbnail generation – disable all WordPress thumbnail generation to save disk space
- Individual thumbnail sizes – selectively enable/disable specific thumbnail sizes
- Preset configurations – one-click "Recommended" settings for optimal performance
- Statistics dashboard – view total storage saved, compression ratio, and optimization metrics
How to use
Just upload images to your Media Manager as you normally would, then Cimo instantly optimizes the images to the next-gen format WebP on your browser during the upload process, the resulting optimized file is the one saved to your WordPress site. It's amazing!
Why use Cimo?
- Completely Free & Unlimited – Image optimization and compression are completely free with no quotas, no limits, and no paywalls. Optimize as many images as you want, forever.
- Instant, Lightning-Fast Processing – Images are optimized instantly in your browser as you upload, with no waiting for server-side or external processing.
- Privacy-First – Your images never leave your device until they’re uploaded to WordPress. No third-party servers, no external processing, complete control over your media.
- Zero Server Load – All optimization happens in your browser, so your website and server stay fast and responsive.
- Smart Optimization – Advanced compression algorithms deliver the best quality-to-size ratio, with automatic WebP conversion for maximum efficiency.
- Future-Proof Format – Automatic WebP conversion ensures your images use the most efficient format, reducing file sizes by up to 80%.
- Instant Results – Experience faster uploads, smaller file sizes, and optimized images that load faster on your website.
- Universal Compatibility – Works seamlessly with the WordPress Block Editor, Elementor, Beaver Builder, and all major page builders.
- Developer Friendly – Clean, lightweight code that won’t interfere with other plugins or slow down your WordPress admin.
Features
- Unlimited optimization – compress and optimize without quotas
- WebP conversion – next‑gen format without external services
- Client‑side processing – faster uploads, no server load
- Privacy‑first – nothing sent to third‑party servers
- Lightweight – no API keys, no background jobs, no server processing
- Advanced settings – full control over quality, dimensions, and thumbnail generation
- Statistics dashboard – track storage savings and optimization performance
- Smart presets – one-click recommended or default configurations
Works with
- The native WordPress Block Editor / Gutenberg
- Should work with any plugin, but we made sure it works with these:
- Popular Page Builders
- Elementor
- Divi (partial: dropping files is not yet supported)
- Breakdance
- Bricks Builder
- Oxygen
- Beaver Builder
- WP Bakery
- Popular Block Editor Builders
- Stackable
- Spectra
- Kadence
- Greenshift
- GenerateBlocks
- Popular plugins
- WooCommerce
Since Cimo's optimization works during the upload process, Cimo should be compatible with any plugin that uses images
What's in Cimo Premium?
If you upgrade to
Cimo Premium, you will get the following:
- Bulk Optimization – optimize your existing media in your Media Library in one click, no server processing as well
- Optimize Files Uploaded via Form Plugins – automatically optimize images, videos, and audio uploaded through popular form plugins (Gravity Forms, WPForms, Ninja Forms, Formidable, Fluent Forms, etc.)
- Video Optimization – automatically optimize and optionally downscale the resolution of videos as you upload them
- Audio Optimization – auotmatically optimize audio files as you upload them
- Low Quality Image Placeholders (LQIP) – for native image blocks, display a subtle image placeholder while waiting for images to load, then fade the loaded image in.
- Stealth Mode – completely hides all Cimo branding and interface elements, while all optimization features continue to work seamlessly in the background.
Visit our website to learn more
Video & Audio optimization are also performed as you upload your files, even before the files are added to your Media Library.
1.3.1
- Fixed: Optimization metadata may not be attached if uploading images with the same filename #40
- Fixed: Added view all stats link
- Fixed: Added upgrade links
1.3.0
- New: Bulk optimization without server processing (premium)
- New: Frontend file uploads can now be optimized (premium)
- New: Integrations to popular WordPress Form plugins (premium)
- New: Added stealth mode (premium)
- New: Added settings link in plugins page entry
- New: Added support for dropping images in WooCommerce descriptions
- Fixed: Cimo settings page improvements
- Fixed: Improvements on stats metabox styling
1.2.3
- New: Added SVG Optimization (premium)
- New: Added HEIC image format support (premium)
- Fixed: Dropping files stopped working in some instances #32
1.2.2
- Fixed: Uploading an image via Media > Add Media File doesn't show stats #4
- Fixed: Dragging multiple images in quick succession sometimes doesn't optimize the image #3
- Fixed: LQIP doesn't work correctly when the image has a srcset attribute #11
- Fixed: Closing the upload button on the block toolbar stops uploading of media #9
- Fixed: Uploading images with the same name in the same session doesn't add the metadata correctly #8
1.2.1
- New: If the resulting optimized image is bigger than the original image, the image is now skipped and the original image is kept.
- Fixed: Fixed license activation issue
1.2.0
- New: Video Optimization (premium)
- New: Audio Optimization (premium)
- New: Low Quality Image Placeholders (premium)
- New: Added rating notice at the right time
- Fixed: Now intercepts media uploads when performed inside the block editor iframe
1.1.2
- Fixed: When uploading images, the original image is also uplaoded.
1.1.1
- Fixed: When uploading images using Safari, images will just upload as they normally would.
1.1.0
- New: Statistics dashboard showing total storage saved, compression ratio, and media optimized
- New: Admin settings page under Settings > Cimo
- New: WebP quality control slider (1-100%) for custom compression levels
- New: Maximum image dimension setting to automatically resize large uploads
- New: WordPress automatic scaling control (disable the 2560px scaling threshold)
- New: Granular thumbnail generation control - disable all or select specific thumbnail sizes
- New: "Recommended" preset for one-click optimal settings
1.0.5
- Fixed: Metadata saving fails if WP is installed in a subdirectory
1.0.4
- New: Added partial support for Divi
1.0.3
- Fixed: File prefixes are no longer used during the optimization process. The original file names are now retained.
1.0.2
- Fixed: Dragging images on a blank editor or on top of other blocks now converts images
- Fixed: Dragging images into the block editor now converts images
- Fixed: Clicking on the Upload button on an image block directly now converts images
- Fixed: Uploading images from Media > Library and in grid view now converts images
- Fixed: Minor console JS error in some admin pages
- Change: Added admin notice to let user know what to expect
1.0.1
- Fixed: Minor string translation tweaks
1.0.0
Initial release of Cimo - bringing free, unlimited image optimization and compression to WordPress.
- Initial release
- Client-side image optimization
- WebP conversion support
- Unlimited compression
- Privacy-first approach