The product idea

One clear job, handled thoroughly

The primary job is to open a WOFF2 file and see what it will do. That starts with custom text, not a technical report. But when something looks wrong, the next questions arrive quickly: Is the character included? Is this the variable file? Which family name does CSS need? Does the file contain a web embedding note?

This tool keeps the file picker and live specimen first, then makes glyphs, axes, features, metadata, metrics, and CSS available without sending the font away.

Local-first

Font bytes and preview content stay in browser memory.

Typography-first

Controls use the vocabulary designers and developers actually need.

Progressive depth

Immediate preview first, detailed inspection when needed.

Honest limits

Metadata and embedding flags are clues, never legal certification.

How it works

Standards-based rendering, local inspection

The browser FontFace API is used for the specimen. Fontkit reads supported OpenType data, including WOFF2 compression, cmap characters, glyph outlines, variation axes, metrics, and layout feature tags.

LayerPurposeWhere it runsWhat leaves your device
FontFace APIRender the selected font in the live specimenYour browserNothing
FontkitRead supported WOFF2/OpenType structuresYour browserNothing
GA4Measure coarse site and feature usageGoogle AnalyticsNo font content or local names
CloudflareDeliver static site files and protect the serviceEdge networkNormal web request data

Have a font to inspect?

Start with the file. No account and no font upload.

Open the WOFF2 preview