Font Metrics Calibrator
Measures text rendering for Chrome Phantome anti-detect profiles.
Run on a
real device
of the target platform (Windows / macOS / Linux / Android / iOS / iPadOS) to capture authentic native font metrics (DirectWrite / CoreText / FreeType).
Platform / font source
Windows 10
Windows 11
Windows 10 (compact set)
macOS 26 Tahoe
macOS Sequoia / Sonoma
iOS (iPhone)
iPadOS (iPad)
Linux (Ubuntu / Fedora)
Android
Browser version
147
146
145
Device
Desktop / Laptop
Tablet
Mobile
▶ Measure All
Ready
Custom fonts (one per line, leave empty for profile defaults)
📥 Download calibration.json