IBM Plex Sans JP
IBM Plex Sans JP is a sans serif font in 7 weights. Its lowercase letters are about as wide as the typical sans serif font. Last updated 10 September 2025.
Editing a PDF that uses IBM Plex Sans JP
Most PDFs embed only the letters they already use. Type a new letter and many editors either refuse or swap in a different font. MythosPDF recognises IBM Plex Sans JP from the widths stored in your PDF, loads the complete open font, and sets your new text in IBM Plex Sans JP itself. The rest of the page is carried over untouched.
Measured metrics
| Average lowercase letter width | 529 units per 1000 em |
|---|---|
| Average capital letter width | 663.5 units per 1000 em |
| Word space | 248 units per 1000 em |
| Digits | tabular (every digit is 630 units wide, so columns of numbers line up) |
| Spacing | proportional |
| Width of i compared with m | 28% |
| Printable ASCII characters covered | 94 of 94 |
| Category | Sans serif |
Weights and styles
Languages beyond basic Latin
Open fonts closest to IBM Plex Sans JP
Measured on every printable character both fonts contain. A smaller difference means the same words take the same space, so lines break in the same places.
- IBM Plex Sans KR Regularsimilar widths (17.6 units)
- IBM Plex Sans Hebrew Regularsimilar widths (17.6 units)
- IBM Plex Sans Thai Looped Regularsimilar widths (17.6 units)
- IBM Plex Sans Devanagari Regularsimilar widths (17.6 units)
- IBM Plex Sans Arabic Regularsimilar widths (17.6 units)
- IBM Plex Sans Thai Regularsimilar widths (17.6 units)
- IBM Plex Sans Regularsimilar widths (17.6 units)
- Anuphan Regularsimilar widths (18.3 units)
Compare IBM Plex Sans JP
Questions people ask
+Can I edit a PDF that uses IBM Plex Sans JP?
Yes. Drop the PDF into MythosPDF and click the text. New letters are set in IBM Plex Sans JP itself, loaded from the open font, so the edit matches the rest of the page.
+Is IBM Plex Sans JP free to use?
IBM Plex Sans JP is released under the SIL Open Font License 1.1, an open licence that allows free use in documents, including commercial ones. Check the licence text for your exact use.
+Which font is closest to IBM Plex Sans JP?
By measured letter widths, IBM Plex Sans KR is the closest match among open fonts (a mean difference of 17.6 units per 1000 em). Text set in one takes almost the same space in the other.
+Which languages does IBM Plex Sans JP support?
It includes these character sets: Cyrillic, Japanese, Latin, Central European.
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