Make Otter Blocks Pages Load Faster, Without Maxing Out Your Server
Otter Blocks adds sliders, popups, Lottie animations, and forms to the block editor, and every image, animation file, and visitor upload lands on your server. Infinite Uploads moves them to cloud storage and a global CDN, optimizes images to AVIF and WebP, and serves self-hosted video from the CDN.
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Otter Blocks and Infinite Uploads: Sliders, Popups, and Uploads Without the Storage Bill
Otter Blocks gives Gutenberg an Image Slider, a Content Slider, Popups, Lottie animations, a Product Review block, and Section backgrounds. With Otter Pro, the Form block adds a File field, so visitors upload too. Every one of those assets sits in your uploads folder, and slider-heavy landing pages are where Core Web Vitals scores fall.
Infinite Uploads offloads your Media Library to cloud storage and a global CDN. Image Optimization, on the Business plan, converts images to AVIF and WebP and right-sizes them. A self-hosted MP4 inside a Popup serves from the CDN as-is, and Video Cloud streams Video Library uploads adaptively, included on every plan.
Otter keeps doing what it does. Blocks, patterns, animations, and visibility conditions render the same, because Infinite Uploads only changes where files live and how fast they arrive. Folders, search, and sort work in the media popup, and one invoice covers storage, video, and CDN bandwidth across every site you run.
Four Problems Infinite Uploads Solves for an Otter Blocks Site
Most offload plugins move files and stop. Here is what matters when the files are your sliders, animations, and form uploads.
Slider-Heavy Pages That Still Pass Core Web Vitals
An Image Slider with ten photos, a full-width Section background, and a Product Review image make a heavy page. Infinite Uploads converts each image to AVIF and WebP, right-sizes it, and serves it from the CDN edge nearest each visitor.
Popups and Slides With Video That Don't Stall Your Host
Otter has no video block of its own, so video comes from the core Video block inside a Popup or Content Slider slide. A self-hosted MP4 serves from the CDN as-is. Upload to the Video Library for adaptive streaming and a customizable player.
Visitor Uploads That Stop Eating Your Disk
With Otter Pro, the Form block's File field can save every upload to the Media Library. Those files offload like any attachment, so a busy application form stops filling your host, and Media Folders keep submissions apart from your design assets.
Lottie Files and Design Assets in One Library
Otter lets you upload Lottie JSON files straight into WordPress, and they pile up beside sliders, backgrounds, and icons. Sync once and everything moves to cloud storage with folders, search, and sort intact, then free up local storage from settings.
Why Otter Builders Pair It With Infinite Uploads
One Bill Instead of a Video Account and a CDN
Otter Blocks has no cloud storage, CDN, or video hosting, so a media-heavy site fills the server or pays for Vimeo plus a separate CDN. Infinite Uploads covers storage, video, and CDN bandwidth on one monthly price.
Move a Live Site Without Rebuilding a Page
The first sync moves your existing Media Library and rewrites URLs to the CDN. Every slider, popup, and Lottie block keeps pointing at the same files, and Download & Disconnect brings everything back to your server if you change course.
Every Client Site on One Account
Agencies building on Otter Blocks connect every client site to one Infinite Uploads account. Unlimited sites on every plan, WordPress Multisite supported, one usage dashboard, and no cloud credentials to hand off when a project ends.
What Works, Feature by Feature
Feature
What you get
Image Slider block
Every slide image is optimized to AVIF and WebP, right-sized, and served from the CDN edge nearest each visitor.
Works
Content Slider and Product Review blocks
Images inside slides and the review image offload like any Media Library file and load from the CDN.
Works
Section block background images
Section backgrounds are normal Media Library images, so they offload and optimize automatically, the same as any page image.
Works
Popup block with a self-hosted video (core Video block inside)
The uploaded MP4 plays from the CDN as-is, not transcoded. Images inside the popup offload and optimize like page images.
Works
Infinite Uploads video block inside a Popup or Content Slider slide
Upload through Media → Video Library and embed with the block for adaptive streaming and a customizable player.
Works, Video Cloud
Lottie Animation block (JSON files)
Otter lets WordPress accept Lottie JSON uploads. The file is a normal Media Library attachment, so it offloads and serves from the CDN.
Works
Form File field with Save to Media Library on (Otter Pro)
That is the field's default. Uploads become Media Library attachments, so they offload and show up in folders and search.
Works
Form File field with Save to Media Library off (Otter Pro)
Files then go out as email attachments and may stay in the uploads folder. We could not confirm where they land or that they sync.
Test first
Generated block CSS in uploads/themeisle-gutenberg
Otter writes a CSS file for each page here. We could not confirm it syncs. Otter rebuilds a missing file, so test one page first.
Test first
Up and Running in Three Steps
1. Connect Infinite Uploads
Install the plugin, connect your account, and sync. Existing sliders, backgrounds, Lottie files, and form uploads move to the cloud.
2. Upload to the Video Library for Adaptive Streaming
A self-hosted MP4 in a Popup plays from the CDN as-is. Upload through Media → Video Library and embed with the Infinite Uploads block for Video Cloud.
3. Free Up Local Storage
Remove local copies once the sync finishes. Your host keeps the freed space, and files stay on the CDN.
Good to Know Before You Switch
The Form block's File field is an Otter Pro feature, and one toggle decides where uploads land. Save to Media Library is on by default, so submissions become attachments that offload normally. Turn it off and files travel as email attachments, so submit a test entry and check the uploads folder.
Otter writes generated CSS files to its own uploads folder. Each page's styles also live in the database, and Otter regenerates a missing file and prints the styles inline meanwhile. We could not confirm Infinite Uploads syncs that folder, so test a page after freeing local storage.
Otter's bundled patterns point at demo photos hosted elsewhere. Those images are not copied into your Media Library until you swap in your own, and uploaded replacements offload like any other image. Sliders and Lottie files add up, so check the pricing calculator before a large migration.
How We Checked
- Read how the Slider, Content Slider, Section, Popup, Review, and Lottie blocks store media.
- Confirmed Lottie JSON uploads go through the WordPress Media Library.
- Traced the Form File field to see where submitted files are saved.
- Found where Otter writes generated CSS inside the uploads folder.
- Checked Otter's own documentation for which features are free and which are Pro.
Result: media blocks need no configuration. The CSS folder and non-Media-Library form uploads deserve a test on your site.
Frequently Asked Questions
Do the Image Slider and Content Slider still work?
Yes. Infinite Uploads only changes where images live. Autoplay, slides per page, and swipe controls all keep working, and every image serves from the CDN instead of your server.
Can I use a self-hosted video inside an Otter Popup?
Yes. Otter has no video block of its own, so add the core Video block inside the Popup. The MP4 serves from the CDN as-is. Upload to the Video Library for Video Cloud's adaptive streaming, included on every plan.
Where do Otter Form file uploads go?
The File field is an Otter Pro feature. With Save to Media Library on, the default, uploads become attachments and offload like any file. With it off, test where the files land before relying on them.
Do Lottie animations offload?
Otter lets WordPress accept Lottie JSON files, and they upload through the Media Library like any attachment. They offload and serve from the CDN. Preview one animation after the first sync to confirm it plays.
Will slider-heavy Otter pages load faster?
Yes. Images from the Image Slider, Content Slider, Section, and Product Review blocks are converted to AVIF and WebP by Image Optimization, right-sized, and served from the nearest CDN edge.
Do Media Folders work inside the block editor?
Yes. The folder sidebar, sort, and search appear in the media modal you open from an Otter Slider, Section background, or Lottie block, not just on the main Media Library page.
Can an agency use this across many Otter Blocks client sites?
Yes. Infinite Uploads supports unlimited sites on every plan and WordPress Multisite, so an agency connects every client site to one account with one usage dashboard and one invoice.
What if a Lottie file or background video is bigger than the upload limit?
Add our free Big File Uploads plugin. It lifts the WordPress Media Library upload limit without server changes, and offload or Video Cloud takes it from there.
More Plugins Otter Blocks Sites Run With Infinite Uploads
- Infinite Uploads and Kadence Blocks
- Infinite Uploads and Spectra
- Infinite Uploads and WPForms
- See all integrations
Try Infinite Uploads on the Free Plan
No cloud accounts. No access keys. Install the plugin, connect your site, and Otter Blocks sliders, Lottie files, and form uploads start moving to the cloud automatically.
Free plan, no credit card. Paid plans from $8.25/mo. Unlimited sites.