diff --git a/src/ImageSharp/Formats/WebP/rfc6386_lossy_specification.pdf b/src/ImageSharp/Formats/WebP/rfc6386_lossy_specification.pdf
new file mode 100644
index 000000000..d421b34cc
Binary files /dev/null and b/src/ImageSharp/Formats/WebP/rfc6386_lossy_specification.pdf differ