diff --git a/apps/web/tests/pwa-manifest.e2e.ts b/apps/web/tests/pwa-manifest.e2e.ts
index 74c3674f44..fb729e6f5d 100644
--- a/apps/web/tests/pwa-manifest.e2e.ts
+++ b/apps/web/tests/pwa-manifest.e2e.ts
@@ -5,10 +5,17 @@ import { expect, it } from 'vitest'
 
 const DIST_ROOT = fileURLToPath(new URL('../dist', import.meta.url))
 
+/** PNG signature per the PNG specification. */
+const PNG_SIGNATURE = [0x89, 0x50, 0x4e, 0x47, 0x0d, 0x0a, 0x1a, 0x0a]
+
 it('ships install metadata with the built web application', async () => {
   const index = await readFile(join(DIST_ROOT, 'index.html'), 'utf8')
   expect(index).toContain('<link rel="manifest" href="/manifest.webmanifest" />')
   expect(index).toContain('<link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png" />')
+  // The SVG must stay declared after the PNG: the HTML spec selects the last
+  // equally appropriate icon, so SVG-capable browsers get the adaptive SVG
+  // while Safari versions before 26 fall back to the PNG.
+  expect(index.indexOf('/favicon-32x32.png')).toBeLessThan(index.indexOf('/favicon.svg'))
 
   const manifest: unknown = JSON.parse(await readFile(join(DIST_ROOT, 'manifest.webmanifest'), 'utf8'))
   expect(manifest).toEqual({
@@ -35,8 +42,18 @@ it('ships install metadata with the built web application', async () => {
   })
 })
 
+it('ships the PNG fallback as a valid non-empty 32x32 image', async () => {
+  const png = await readFile(join(DIST_ROOT, 'favicon-32x32.png'))
+  expect([...png.subarray(0, 8)]).toEqual(PNG_SIGNATURE)
+  expect(png.readUInt32BE(16)).toBe(32)
+  expect(png.readUInt32BE(20)).toBe(32)
+  expect(png.length).toBeGreaterThan(0)
+})
+
 it('ships a favicon that switches to a light mark under dark color scheme', async () => {
   const favicon = await readFile(join(DIST_ROOT, 'favicon.svg'), 'utf8')
-  expect(favicon).toContain('@media (prefers-color-scheme: dark)')
-  expect(favicon).toMatch(/path\s*{[^}]*fill:\s*#fff/i)
+  // The light fill must live inside the dark-scheme media query, so the icon
+  // stays black in light mode and only turns white under a dark scheme.
+  expect(favicon).toMatch(/@media \(prefers-color-scheme: dark\)\s*{\s*path\s*{[^}]*fill:\s*#fff/i)
+  expect(favicon).toContain('fill="#000"')
 })