OTF to AFM conversion is the process of transforming an OpenType font file (OTF), which contains glyph outlines and advanced typographic features, into an Adobe Font Metrics (AFM) file that stores font metrics such as character widths, kerning pairs, and font metric metadata. This conversion extracts and exports metric and metric-related information from the OTF so legacy layout, typesetting, or printing systems can accurately measure and place text.
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Practical guides to help you choose formats, preserve quality, and avoid common conversion problems.
Drag your .OTF file from your computer or use the browse function.
Confirm .afm as the selected destination format.
Click "Convert" and download your converted .AFM file once ready.
The MIME type for OTF files is font/otf, commonly used for scalable fonts on various platforms. AFM files typically use the text/plain MIME type since they are ASCII text files containing font metrics. OTF fonts include glyph outlines encoded with formats like TrueType or CFF, whereas AFM files provide essential spacing data for use with PostScript and PDF workflows.
The AFM (.AFM) format is commonly used for other. Understanding its characteristics can be helpful when converting to or from other formats like OTF.
While specific technical details aren't available here, AFM files generally serve the purpose of storing other effectively within their domain.
Convert your OTF font files to AFM format quickly and effortlessly with our reliable online OTF to AFM converter. Designed for designers, developers, and typographers, our tool makes font format conversion simple and accessible without the need for complex software.
OTF (OpenType Font) files are scalable font files that contain both the glyph outlines and font data, widely used for on-screen and print use. AFM (Adobe Font Metrics) files, on the other hand, contain font metric information only, used primarily by typesetting and page layout applications to ensure accurate spacing and alignment. While OTF files define the actual font shapes, AFM files focus on the precise measurement of font characters.
Keep source OTF files below 50–100 MB for fastest conversion; extremely large OTFs with many glyphs or multiple masters can slow processing.
To preserve measurement accuracy, choose full-precision metric output rather than rounded integers when your workflow supports fractional widths.
For batch conversion, group OTFs by outline type (CFF vs TrueType) to avoid per-file manual adjustments and use a scriptable converter or command-line tool.
Be aware that AFM contains only metric data — glyph outlines, hinting, and OpenType feature logic (GSUB/GPOS) are not stored in AFM.
This OTF to AFM converter saved me hours of manual work.
Emily R.
Graphic Designer
Accurate metric data output made my layout process seamless.
John M.
Typesetter
Fast and easy tool, perfect for quick font conversions.
Lisa K.
Web Developer
Start your free OTF to AFM conversion now.
Drag your file here to to upload.
Up to 250MB
If converting variable OTFs, export a specific instance (weight/width) first; AFM cannot represent variable axis tables, only single-instance metrics.