diff --git a/src/buffer.rs b/src/buffer.rs
index 1982085..da7e8ad 100644
--- a/src/buffer.rs
+++ b/src/buffer.rs
@@ -319,7 +319,7 @@ impl<'a> Buffer<'a> {
     }
 
     fn relayout(&mut self) {
-        #[cfg(feature = "std")]
+        #[cfg(all(feature = "std", not(target_arch = "wasm32")))]
         let instant = std::time::Instant::now();
 
         for line in &mut self.lines {
@@ -336,13 +336,13 @@ impl<'a> Buffer<'a> {
 
         self.redraw = true;
 
-        #[cfg(feature = "std")]
+        #[cfg(all(feature = "std", not(target_arch = "wasm32")))]
         log::debug!("relayout: {:?}", instant.elapsed());
     }
 
     /// Pre-shape lines in the buffer, up to `lines`, return actual number of layout lines
     pub fn shape_until(&mut self, lines: i32) -> i32 {
-        #[cfg(feature = "std")]
+        #[cfg(all(feature = "std", not(target_arch = "wasm32")))]
         let instant = std::time::Instant::now();
 
         let mut reshaped = 0;
@@ -365,7 +365,7 @@ impl<'a> Buffer<'a> {
         }
 
         if reshaped > 0 {
-            #[cfg(feature = "std")]
+            #[cfg(all(feature = "std", not(target_arch = "wasm32")))]
             log::debug!("shape_until {}: {:?}", reshaped, instant.elapsed());
             self.redraw = true;
         }
@@ -375,7 +375,7 @@ impl<'a> Buffer<'a> {
 
     /// Shape lines until cursor, also scrolling to include cursor in view
     pub fn shape_until_cursor(&mut self, cursor: Cursor) {
-        #[cfg(feature = "std")]
+        #[cfg(all(feature = "std", not(target_arch = "wasm32")))]
         let instant = std::time::Instant::now();
 
         let mut reshaped = 0;
@@ -404,7 +404,7 @@ impl<'a> Buffer<'a> {
         }
 
         if reshaped > 0 {
-            #[cfg(feature = "std")]
+            #[cfg(all(feature = "std", not(target_arch = "wasm32")))]
             log::debug!("shape_until_cursor {}: {:?}", reshaped, instant.elapsed());
             self.redraw = true;
         }
@@ -577,7 +577,7 @@ impl<'a> Buffer<'a> {
 
     /// Convert x, y position to Cursor (hit detection)
     pub fn hit(&self, x: i32, y: i32) -> Option<Cursor> {
-        #[cfg(feature = "std")]
+        #[cfg(all(feature = "std", not(target_arch = "wasm32")))]
         let instant = std::time::Instant::now();
 
         let font_size = self.metrics.font_size;
@@ -670,7 +670,7 @@ impl<'a> Buffer<'a> {
             }
         }
 
-        #[cfg(feature = "std")]
+        #[cfg(all(feature = "std", not(target_arch = "wasm32")))]
         log::trace!("click({}, {}): {:?}", x, y, instant.elapsed());
 
         new_cursor_opt
diff --git a/src/font/system/std.rs b/src/font/system/std.rs
index 1025747..3efe7eb 100644
--- a/src/font/system/std.rs
+++ b/src/font/system/std.rs
@@ -33,6 +33,7 @@ impl FontSystem {
 
         let mut db = fontdb::Database::new();
         {
+            #[cfg(not(target_arch = "wasm32"))]
             let now = std::time::Instant::now();
 
             db.load_system_fonts();
@@ -41,6 +42,7 @@ impl FontSystem {
             db.set_sans_serif_family("Fira Sans");
             db.set_serif_family("DejaVu Serif");
 
+            #[cfg(not(target_arch = "wasm32"))]
             log::info!(
                 "Parsed {} font faces in {}ms.",
                 db.len(),
@@ -54,6 +56,7 @@ impl FontSystem {
     /// Create a new [`FontSystem`], manually specifying the current locale and font database.
     pub fn new_with_locale_and_db(locale: String, mut db: fontdb::Database) -> Self {
         {
+            #[cfg(not(target_arch = "wasm32"))]
             let now = std::time::Instant::now();
 
             //TODO only do this on demand!
@@ -64,6 +67,7 @@ impl FontSystem {
                 }
             }
 
+            #[cfg(not(target_arch = "wasm32"))]
             log::info!(
                 "Mapped {} font faces in {}ms.",
                 db.len(),
@@ -111,6 +115,7 @@ impl FontSystem {
             font_matches_cache
                 .entry(AttrsOwned::new(attrs))
                 .or_insert_with(|| {
+                    #[cfg(not(target_arch = "wasm32"))]
                     let now = std::time::Instant::now();
 
                     let mut fonts = Vec::new();
@@ -130,8 +135,11 @@ impl FontSystem {
                         fonts,
                     });
 
-                    let elapsed = now.elapsed();
-                    log::debug!("font matches for {:?} in {:?}", attrs, elapsed);
+                    #[cfg(not(target_arch = "wasm32"))]
+                    {
+                        let elapsed = now.elapsed();
+                        log::debug!("font matches for {:?} in {:?}", attrs, elapsed);
+                    }
 
                     font_matches
                 })