2026-04-19 · 1 min read

Compress images before slow uploads

Resize for layout, compress for bytes—check visual quality on real devices.

imageperformanceweb

Key takeaways

  • Resize to the maximum display width you truly need.
  • Re-check sharpness on retina screens after aggressive compression.

Right-size first

Downscale oversized photos to the width your UI actually renders—compression alone cannot invent lost detail responsibly.

Then compress

Apply compression iteratively: smaller steps preserve more detail than one extreme jump.

Pair with QR generation if you are placing compressed assets into printed collateral.

FAQ

PNG or JPEG?

JPEG for photos, PNG when you need transparency; modern sites also use WebP when supported.

Do file tools upload images?

Yes—only upload images you are allowed to process on the server.