sentry/static/fonts/README.md

Notes

The fonts in this folder have been optimized for web rendering. There are two notable modifications: vertical metrics and file size. Before making any changes to these files, ensure that the metrics are correct and the files are properly minimized.

Vertical metrics

For historical reasons, font files include three different sets of metrics (win, typo, and hhea). These metrics have been modified to standardize rendering across operating systems and browsers.

The modified metrics are:

• win ascent: 840
• win descent: 250
• typo ascent: 840
• typo descent: -250
• hhea ascent: 935
• hhea descent: -230

File size

These files have been reprocessed using FontSquirrel's Webfont Generator to reduce their size. Note that the default Optimal option will remove certain useful font features and settings. Before processing, select the Expert option, and change the following:

• Vertical metrics: no adjustment
• Opentype features: keep all features