diff --git a/README.txt b/README.txt
index 2046710..f44e097 100644
--- a/README.txt
+++ b/README.txt
@@ -61,7 +61,7 @@ Library
 
 - (open name ~scale) Imports a graphic file with format.
 - (import name ~shape) Imports a graphic file with format.
-- (export ~name ~format ~quality) Exports a graphic file with format.
+- (export ~format ~quality) Exports a graphic file with format.
 - (print string) Exports string to file.
 - (pos ~x ~y) Returns a position shape.
 - (line ax ay bx by) Returns a line shape.
diff --git a/index.html b/index.html
index 3a43380..ade82e3 100644
--- a/index.html
+++ b/index.html
@@ -896,9 +896,9 @@ function Library (client) {
     client.surface.draw(img, shape, alpha)
     return shape || this.rect(0, 0, img.width, img.height)
   }
-  this.export = (name = 'ronin', type = 'image/png', quality = 1.0) => { // Exports a graphic file with format.
-    const ext = type === 'image/png' ? name + '.png' : name + '.jpg'
-    client.source.write(name, ext, client.surface.el.toDataURL(type, quality), type)
+  this.export = (format = 'jpg', quality = 0.9) => { // Exports a graphic file with format.
+    const type = `image/${format === 'jpeg' || format === 'jpg' ? 'jpeg' : 'png'}`
+    client.source.write('ronin', format, client.surface.el.toDataURL(type, quality), type)
   }
   this.pos = (x = 0, y = 0) => { // Returns a position shape.
     return { x, y }
diff --git a/scripts/library.js b/scripts/library.js
index ffd2eac..8c8c997 100644
--- a/scripts/library.js
+++ b/scripts/library.js
@@ -20,9 +20,9 @@ function Library (client) {
     return shape || this.rect(0, 0, img.width, img.height)
   }
 
-  this.export = (name = 'ronin', type = 'image/png', quality = 1.0) => { // Exports a graphic file with format.
-    const ext = type === 'image/png' ? name + '.png' : name + '.jpg'
-    client.source.write(name, ext, client.surface.el.toDataURL(type, quality), type)
+  this.export = (format = 'jpg', quality = 0.9) => { // Exports a graphic file with format.
+    const type = `image/${format === 'jpeg' || format === 'jpg' ? 'jpeg' : 'png'}`
+    client.source.write('ronin', format, client.surface.el.toDataURL(type, quality), type)
   }
 
   // Shapes