diff --git a/README.md b/README.md
index 2ed0d6d..6cfafdd 100644
--- a/README.md
+++ b/README.md
@@ -911,6 +911,12 @@ zig build
 
 ---
 
+## Known Limitations
+
+- **TTF Font Subsetting**: When embedding TrueType fonts, the entire font file is included rather than just the glyphs used. This can result in larger PDF files when using custom fonts. Font subsetting is planned for a future version.
+
+---
+
 ## Building
 
 ```bash