diff --git a/tools/img-shrink.js b/tools/img-shrink.js
index dc3e549..a36c10e 100644
--- a/tools/img-shrink.js
+++ b/tools/img-shrink.js
@@ -5,7 +5,7 @@ import sharp from 'sharp';
 const dirIn = 'tools/in';
 const dirOut = 'tools/out';
 const thresholdBytes = 2 * 1024 * 1024;
-const quality = [100, 87, 75, 62, 50, 37, 25, 12];
+const quality = [100, 99, 97, 95, 90, 80, 75, 70, 60, 50, 40];
 
 async function main() {
     for (const base of await fs.readdir(dirIn)) {