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Release Notes

What's new in the Cavai platform — features, fixes, and improvements.

JUNE 2026
Frontend Engine Backend
Bubbles

A quieter month with Kevin on vacation and Nicolay on paternity leave for two weeks. The work that shipped focused on asset performance: custom fonts get automatically subsetted and embedded, uploaded images are converted to WebP, and video streaming now kicks in for shorter clips. A new crossfade animation effect was added for change operators, and several bug fixes landed for block groups, animations, and DevTools.

Highlights
Font Optimization New Feature

Custom fonts are now automatically subsetted to strip unused glyphs, reducing file sizes. TTF and OTF uploads are supported alongside WOFF/WOFF2.

The build system analyses which characters your creative actually uses and strips everything else from the font file before publishing. This can reduce font sizes by more than 99%, helping creatives load faster. You can also copy the CSS font-family rule directly from the typeface settings panel for use in HTML blocks.

Auto WebP Conversion New Feature

JPG and PNG images uploaded to creatives are now automatically converted to WebP on the server, reducing file sizes without any extra steps.

The conversion happens transparently during upload and typically reduces image sizes by around 80%. GIF and already-WebP files are left as-is. Combined with font subsetting, this means creatives load noticeably faster without any manual optimization.

Crossfade Animation New Feature

A new crossfade effect for change operators that smoothly blends between content instead of hard-cutting.

The crossfade works by cloning the current state as an overlay and fading it out while the new content appears underneath, using the Web Animations API. The animation panel also got a UX fix where input values were lost when the panel closed during blur. Video change operators don't support crossfade since the video player handles its own transitions.

Changelog
Frontend v8.26.1 → v8.27.1 · 3 releases ✦ 2 features ↑ 2 improvements ✓ 6 fixes
Font optimization with DevTools Page Weight redesign, crossfade animation, lower streaming threshold, and bug fixes for block groups, assets, and preview.
Focused and pressed operators brought to front in flow editor NicolayKjarnet
Author
NicolayKjarnet
Jun 4
Fix blocks disappearing when nested 3+ levels deep in groups NicolayKjarnet
Author
NicolayKjarnet
Jun 4
Deduplicate asset entries in DevTools Page Weight NicolayKjarnet
Author
NicolayKjarnet
Jun 4
Fix stale and misclassified assets in DevTools Page Weight NicolayKjarnet
Author
NicolayKjarnet
Jun 5
Update Xandr cachebuster NicolayKjarnet
Author
NicolayKjarnet
Jun 4
Remove pointer-events override from preview overlay NicolayKjarnet
Author
NicolayKjarnet
Jun 5
Engine v6.9.2 → v6.10.0 · 2 releases ✦ 2 features ✓ 3 fixes
Crossfade effect, expanded font format support, and fixes for animation targeting, font loading, and duplicate font-face rules.
Backend v2.19.0 → v2.19.3 · 4 releases ✦ 1 feature ✓ 1 fix
Auto WebP conversion for uploaded images and a fix for custom metric queries in hourly analytics.