Font Subsetter
Create a smaller font for supplied text or Unicode ranges while retaining cmap, composite, layout-feature, and shaping closure.
Choose a font
Font Subsetter
Create a deterministic font subset for supplied text or Unicode ranges with conservative layout and glyph closure.
- Input
- One supported font plus bounded text or Unicode ranges and an output-family choice.
- Output
- A subset font and deterministic retained/dropped manifest.
- Real limitations
- Subsetting is inherently lossy, cannot grant redistribution rights, and may be blocked by the source embedding restriction bits.
- Privacy and data handling
- one supported font plus bounded text or Unicode ranges and an output-family choice is uploaded to a compatible Convertr worker only after you start the operation. Processing is automated, and temporary source and result files are deleted automatically after processing rather than retained as permanent storage.
How to use this tool
- Choose one supported font plus bounded text or Unicode ranges and an output-family choice and wait for the page to validate it.
- Set the available output or inspection options, then start processing.
- Review the reported result and download a subset font and deterministic retained/dropped manifest before the temporary link expires.
Common failure modes
Missing requested coverage, corrupt structures, unsupported output flavor, failed reopen, or failed shaping validation stops export.
Useful example
Subset a WOFF2 font to the characters used by a multilingual product while retaining reachable layout features and .notdef.