glyphsmith v0.3.0

Zero-upload client-side Minecraft font pack auditor, multi-pack codepoint collision analyzer, OASIS SARIF v2.1.0 exporter, and deterministic bitmap glyph solver.

GitHub Repository Download CLI JAR (v0.3.0)

Drop one or more resource pack .zip archives (in stack load order)

Audits ascent vs height, 256px atlas cells, PNG grid truncation, SpaceProvider bounds, reference cycles, pack.mcmeta overlays, and cross-pack codepoint collisions locally in your browser.

100% local execution via Web DecompressionStream and Canvas APIs. No files leave your machine.

Artwork & Target Placement

Namespace & Glyph ID

Codepoint (Plane 15 Default)

Placement Anchor

Restore Cursor After Glyph

Target X Offset (px)

Target Y Offset (px)

Cyan outline = ink bounds; amber stripes = transparent bottom padding added so ascent <= height at 1:1 scale.

Solved Vanilla Font Metrics

Height

Ascent

Client Advance

177px

Pad Bottom

0px

Lead Shift

-8px

Restore Shift

-169px

glyphs.yml Spec

Vanilla Bitmap Provider JSON

Run in CI or Locally

java -jar glyphsmith-0.3.0.jar audit base-pack.zip hud-pack.zip --strict --sarif glyphsmith.sarif
java -jar glyphsmith-0.3.0.jar build glyphs.yml --locked --zip pack.zip