Headless performance, without the build pipeline tax.

Built for agencies running multiple client sites. Designers get a clean theme workspace, clients can edit safely, and every site ships fast by default.

Real-world Performance
achieved on Subtle Difference relaunch
100 Performance
RealMosaic performance audit showing 100/100 Lighthouse score
FCP
0.3s
LCP
0.5s
TBT
0ms
CLS
0

Built for agency reality

Practical tools for launching and running lots of client sites.

Integrated headless

Headless speed, without the extra build process

Get the speed and flexibility of an API driven setup, without a separate front end build process. Edit content, publish, and RealMosaic automatically optimises and cache busts your assets on the server.

No build pipeline
Predictable rendering

Clients can edit safely

Clients update content without breaking layouts. You define the design boundaries, they edit inside them. The theme stays protected and branding stays consistent regardless of who is publishing.

Built in site features

Blogs, galleries, forms, and events are built in and theme ready. No plugins to install, configure, or maintain. Faster launches, simpler client training, and fewer things to break.

Performance as a baseline

Performance Mode removes unused framework CSS and keeps your assets lean. Results vary by theme and content, but big reductions are common.

Safe optimisation, instant rollback
Auto revert if anything breaks
Asset Optimiser
Optimisation Complete: 226KB → 49KB

The workflow

A simple workflow for launching and maintaining lots of client sites.

01

Provision

Spin up new client sites under your agency domain, with centralised provisioning.

02

Standardise

Lock in page layouts and templates so all content stays consistent.

03

Launch

Turn on Performance Mode to remove unused CSS and keep pages fast.

04

Govern

Track usage with Capacity Units so you can price, plan, and scale confidently.