Image Format Comparison

PNG vs JPG: Which Format for Your Images?

PNG vs JPG is one of the most fundamental decisions in digital image work. The formats serve different purposes: PNG is for graphics, JPG is for photos. Understanding when to use each one prevents the common mistake of uploading 5 MB PNG photos to websites (hurting load speed) or saving logos as JPG (creating compression artifacts around text and sharp edges).

PNGvsJPG

Quick Verdict

Use PNG when…

Use PNG for logos, icons, screenshots, graphics with text, and any image requiring transparency. PNG's lossless compression is essential when pixel-perfect accuracy matters.

Use JPG when…

Use JPG for photographs, social media images, and any web image where file size matters and transparency is not required. JPG is 5–10× smaller than PNG for typical photos.

PNG vs JPG: Feature Comparison

Feature	PNG	JPG
Compression	Lossless — every pixel preserved perfectly	Lossy — discards some data permanently
File size (photo)	Very large — 2–5 MB for a typical photo	Small — 200–500 KB for the same photo at quality 85
Transparency	Full alpha channel	None
Best for	Logos, icons, screenshots, graphics, text images	Photos, gradients, complex natural scenes
Re-save quality	Identical every time	Minor quality loss each re-save at below 95% quality
Web photos	Not recommended — too large	Good choice (though WebP is better)

When PNG wins

✓Compression: Lossless — every pixel preserved perfectly
✓File size (photo): Very large — 2–5 MB for a typical photo
✓Transparency: Full alpha channel

When JPG wins

✓Compression: Lossy — discards some data permanently
✓File size (photo): Small — 200–500 KB for the same photo at quality 85
✓Transparency: None

Frequently asked questions

Should I save screenshots as PNG or JPG?

PNG — screenshots contain sharp text, UI elements, and flat-colour areas that JPG compression handles poorly (visible artifacts around text edges). A screenshot saved as PNG at high quality is typically the same or smaller than a JPEG version at the same visual quality for this type of content, because lossless PNG compression is efficient for screenshots.

Is PNG better quality than JPG for photos?

Technically yes (lossless vs. lossy), but practically it makes no difference for viewing. A photo saved as JPG at quality 90 looks identical to PNG in normal viewing. The PNG is 5–10× larger with no perceptible quality advantage. For photos: JPG (or WebP) is the correct choice unless you'll be editing and re-saving multiple times.

What's the best format for web images?

WebP is the best format for web images in 2024 — it's smaller than both JPG and PNG while supporting transparency (like PNG) and being widely browser-compatible. Use WebP as primary with a JPG fallback in <picture> elements. If WebP isn't an option, use JPG for photos and PNG for graphics/logos.