diff --git a/components/imageproc/src/lib.rs b/components/imageproc/src/lib.rs
index 99b6abb9..2ce000fe 100644
--- a/components/imageproc/src/lib.rs
+++ b/components/imageproc/src/lib.rs
@@ -207,6 +207,7 @@ impl Hash for Format {
         };
 
         hasher.write_u8(q);
+        hasher.write(self.extension().as_bytes());
     }
 }
 
@@ -316,7 +317,7 @@ impl ImageOp {
             Format::WebP(q) => {
                 let encoder = webp::Encoder::from_image(&img);
                 let memory = match q {
-                    Some(q) => encoder.encode(q as f32 / 100.),
+                    Some(q) => encoder.encode(q as f32),
                     None => encoder.encode_lossless(),
                 };
                 f.write_all(&memory.as_bytes())?;