Variable Font Instancer

• Choose a font within the displayed limits.
• Enter a JSON object of axis values, using Font Inspector to find valid tags and ranges.
• Choose Process font. The first run downloads and verifies the engine. Cancel stops the worker.
• Review the report and download. Test the font and check its license before use. Reset clears inputs and results.

Pin the weight axis with {"wght":600} after checking the font axis range.

• 10 MiB input, 32 MiB output, 256 font tables, 1 MiB container metadata/private data, 256 MiB native memory, 60-second verified-engine download and worker timeout.
• Single-font TTF/OTF, WOFF and WOFF2 only. Collections, EOT, Type 1, SVG fonts and symbol-only fonts are unsupported. Supported Unicode cmap formats: 0, 4, 12 and 13.
• Container conversion preserves TrueType/CFF outline type; it does not convert TrueType outlines to CFF or vice versa. Results can be larger. Font digital signatures are removed when rewriting.
• Use fonts your license permits you to convert, modify, embed and redistribute. Embedded name/license records are retained; reported OS/2 flags do not grant rights. No-subsetting flags prevent subsetting.
• Subsetting keeps supplied Unicode characters with HarfBuzz shaping closure; missing characters and dropped tables are reported. Some unsupported tables may be removed. Test appearance before using output.
• Instancing accepts existing axis tags within their original ranges. Unspecified axes remain variable. Font collections and separate face selection are unsupported.
• Webfont metadata/private bytes are preserved between WOFF formats and offered as sidecar downloads for SFNT. Inspector is a structural inventory, not a complete font sanitizer. Browser preview may use fallback glyphs for missing characters.