New Features
Automatic image optimization
Uploaded JPG and PNG images are now automatically converted to WebP. This typically reduces file sizes by 50–86%, making creatives lighter and less likely to trigger ad blockers. GIF and WebP files are left unchanged.
String custom metrics
Custom metrics now support string values in addition to numbers, making it possible to track text-based data like selected options or user input labels.
Improvements
Font subsetting in published builds
Updated the build pipeline to support automatic font subsetting, TTF/OTF fonts, and embedded font files. This is the backend side of the font optimization released in AF 8.27.0.
Bug Fixes
Custom metrics work with empty data
Fetching analytics for creatives with no custom metric data no longer causes an error. Empty metrics now return zeros instead of failing.