Compress images in the browser with Cimo before offloading to cloud storage
Cimo is the only image optimizer in WP Media Cloud that processes entirely in the browser before the image is uploaded. No API keys, no server load, no external services. The compressed WebP lands in WordPress already optimised. WP Media Cloud offloads it straight to cloud storage.
Compressed before it ever touches your server. Or cloud storage.
Every other image optimizer in WP Media Cloud sends images to an external API or processes them on your server. Cimo does neither. It intercepts the image in your browser the moment you drag it into the WordPress upload area, converts it to WebP using the browser's Canvas API, and uploads only the compressed WebP. WordPress never sees the original.
You drag an image into WordPress
Open the WordPress media uploader as you normally would. Drag or select an image file. Cimo intercepts the upload before it leaves your browser. No change to your workflow is needed.
Your browser converts and compresses it
Cimo uses the browser's built-in Canvas API to convert the image to WebP and compress it according to your quality settings. This happens entirely on your device. No internet request is made, no server is contacted, no external service is involved. Works in Chrome, Firefox, Edge, and Opera. Not currently supported in Safari.
Only the WebP is uploaded to WordPress
The compressed WebP is what gets uploaded. WordPress receives it as a normal upload and stores it in the media library. There is no large original JPEG sitting on your server. No server-side conversion job runs. The upload is also faster because a WebP is typically much smaller than the source file.
WP Media Cloud offloads the already-optimised WebP
WP Media Cloud picks up the file from the media library and offloads it to your cloud storage provider. Because Cimo has already done its work before the upload, WP Media Cloud offloads a compressed WebP rather than a large unoptimised original. The two plugins never interfere with each other.
Unlimited, free, and completely private. No API key needed.
Cimo's free version has no credit limits, no quotas, no monthly caps, and no external accounts to manage. Install it and images are automatically converted to WebP from that point on.
Instant WebP conversion
Every image you upload is instantly converted to WebP in the browser before it reaches WordPress. JPEG and PNG inputs produce a WebP output. The conversion is immediate as there is no round trip to an external server.
Zero server load
Because all compression and conversion happens in the browser, your hosting server does no image processing work at all. This is especially significant for shared hosting or resource-constrained environments where server-side image processing during bulk uploads can cause timeouts or slowdowns.
Privacy by design
Your images never leave your device until they are uploaded to WordPress as an already-optimised file. No third-party server processes your images at any point. For clients handling sensitive images, product photos under NDA, or medical and legal content, this is a meaningful difference from API-based optimisers.
Max dimension control
Set a maximum width and height. Images that exceed those dimensions are automatically scaled down during browser-side processing before upload. Only the correctly-sized WebP reaches your server, preventing large camera photos from being stored at full resolution.
Statistics dashboard
The Cimo settings page shows total storage saved, compression ratio, number of files optimised, and a comparison of original versus optimised file sizes. This gives you a clear picture of how much disk space and bandwidth Cimo has saved over time.
Smart presets
One-click Recommended preset applies 80% WebP quality and a 1920px maximum dimension, which works well for most sites. A Default preset is also available. You can adjust quality, dimensions, and thumbnail generation manually if your site has different requirements.
Free is genuinely complete. Premium adds bulk and video.
Cimo's free version handles new uploads from the moment you install it with unlimited images, WebP conversion, quality control, max dimension enforcement, and a statistics dashboard. No API key, no account, no credit card. For most sites managing their own uploads, the free version is everything needed.
The one thing the free version does not cover is your existing media library. Images already in WordPress before Cimo was installed are not retroactively optimised. Cimo Premium at $29 per year adds Bulk Media Optimisation for your existing library, also client-side with no server load. It also adds Video and Audio Optimisation, user upload optimisation for images submitted through form plugins, Low Quality Image Placeholders, Smart Optimization, and Stealth Mode. A 30-day money-back guarantee applies to all paid plans.
- Free: unlimited images, WebP, quality control, max dimensions, statistics
- Free: no API key, no account, no server load, works on new uploads
- Premium ($29/year): Bulk Optimization of existing library, client-side
- Premium: Video and Audio Optimization, user upload optimization
- Premium: LQIP, Smart Optimization, Stealth Mode, 30-day money-back
Plans at a glance
Cimo + WP Media Cloud + your existing stack
Because Cimo processes images before they reach WordPress, it works with any plugin or page builder that uses the WordPress media library. WP Media Cloud offloads whatever arrives in the media library, including the already-optimised WebP files Cimo produces.
Compress in the browser. Offload with WP Media Cloud.
WP Media Cloud has a 30-day money-back guarantee. Cimo is free forever with no account required.
