Put your shaping to the test.

Run HarfBuzz against real script sequences. Inspect missing glyphs, advances, and offsets.

Choose your font

From the open library

or upload your own

Drop in a font fileTTF, OTF, WOFF, WOFF2 · up to 2 MBTest scriptCustom shaping text (optional)Download original license

Processed using an isolated Python subprocess. No font files are retained from uploads.

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Choose a font to see measured results. Uploaded files are checked before processing.

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