Font OpenType Feature Preview
Test ligatures and stylistic sets in uploaded fonts; export comparison sheets.
Inspect GSUB/GPOS feature tags and proof explicit feature settings in the browser. Available tags may be limited to particular scripts or language systems.
Using Font OpenType Feature Preview
Test ligatures and stylistic sets in uploaded fonts; export comparison sheets.
- Try the worked example or open the supported local sources. Configuration-only pattern builders start with an editable example; they do not need a file.
- Use Details & settings to choose language, rules, field schemas or pattern content. In Review, select a card to edit its supported fields and keep a private note.
- Open Preview to inspect rendered results, source evidence and warnings. Accessibility patterns have real controls; use keyboard navigation as well as a pointer.
- Download the workflow ZIP or an individual task artifact from Export. Save review preserves configuration and decisions; reopen file-based projects with the exact original sources.
Example
The example is tailored to Font OpenType Feature Preview. Inspect GSUB/GPOS feature tags and proof explicit feature settings in the browser. Available tags may be limited to particular scripts or language systems. Change one setting or record, compare the result and open the exported artifact before sharing it.
Questions & answers
What does Font OpenType Feature Preview support?
Inspect GSUB/GPOS feature tags and proof explicit feature settings in the browser. Available tags may be limited to particular scripts or language systems.
Which files can I download?
Export offers the complete ZIP, result JSON/CSV and individual task artifacts. Depending on this workflow those include reviewed PO/XLIFF, glossary TBX, reading HTML, keyboard patterns, font proofs, annotation SVGs or MathML. Exact source files are not overwritten.
Does this upload my documents or require an account?
Processing uses local browser code and existing local libraries. No translation, font or document API receives your inputs. Public pages retain approved third-party advertising and optional consent-based analytics. You can save a review without an account; matching source files are required to reopen file-based work.
What limitations should I check before publishing?
Files are limited to eight sources, 25 MiB each and 80 MiB combined, with smaller per-format bounds in the workspace. Worker analyses stop after 30 seconds. Language/Unicode results depend on browser support; human review remains essential for meaning, permissions, typography and accessibility. Automated checks are scoped evidence, not certification.
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