PNG vs JPG: When to Use Each Format (With Examples)

PNG or JPG? It's the most common image format question. Here's a definitive guide with clear rules.

The Quick Answer

Use JPG for: Photos, complex images, file size matters

Use PNG for: Logos, screenshots, transparency needed, text

Quick Decision Flowchart

Does the image need transparency?
├── Yes → PNG
└── No →
    Is it a photograph?
    ├── Yes → JPG
    └── No →
        Does it have text or sharp edges?
        ├── Yes → PNG
        └── No → Either works (JPG for smaller file)

Understanding the Formats

JPG (JPEG)

Type: Lossy compression

How it works: Removes data to reduce file size. You can't get the data back.

File size: Small (photos: 100-500KB typical)

Best quality: 85-95% setting

Weaknesses:

• No transparency
• Artifacts around sharp edges
• Quality degrades with each save

PNG

Type: Lossless compression

How it works: Compresses without removing data. Perfect quality always.

File size: Large (photos: 2-10MB typical)

Quality: Always 100% (lossless)

Weaknesses:

• Much larger files
• Overkill for photographs
• No native animation (use APNG)

Side-by-Side Comparisons

Example 1: Photograph

Winner: JPG (620KB at 85% looks identical to PNG at viewing size)

Example 2: Logo with Transparency

Winner: PNG (transparency support essential)

Example 3: Screenshot with Text

Winner: PNG (text clarity matters)

Example 4: Simple Graphic

Winner: PNG (smaller AND better quality for solid colors)

When JPG is Better

✅ Photographs

Photos have millions of colors and subtle gradients. JPG's lossy compression is designed for exactly this.

Rule: If it came from a camera, use JPG.

✅ Complex Artwork

Paintings, illustrations with many colors, gradients - JPG handles these well.

✅ File Size Matters

For email, upload limits, storage:

• PNG photo: 8 MB
• Same as JPG: 600 KB

✅ Web Page Speed

Every KB counts. A page with 10 photos:

• As PNG: 80 MB (page won't load)
• As JPG: 5 MB (fast loading)

✅ Social Media

Most platforms convert to JPG anyway. Upload quality JPG (90%) to control the compression.

When PNG is Better

✅ Transparent Backgrounds

Only PNG (and WebP) handle transparency. JPG cannot.

Examples:

• Logos over different backgrounds
• Product images for e-commerce
• Overlay graphics

✅ Text and Screenshots

JPG creates blur and artifacts around sharp edges. Text becomes unreadable.

Always use PNG for:

• Screenshots
• Infographics with text
• UI mockups
• Diagrams

✅ Logos and Icons

Sharp edges + solid colors = PNG wins.

JPG artifacts are visible on:

• Logo edges
• Icon details
• Clean lines

✅ Images You'll Edit

Each JPG save loses quality. PNG preserves quality through unlimited edits.

Workflow tip:

1. Work in PNG (or PSD/TIFF)
2. Export to JPG only for final delivery

✅ Solid Color Graphics

Counter-intuitively, PNG is smaller than JPG for simple graphics:

A red square:

• PNG: 2 KB
• JPG: 15 KB

PNG excels at compressing solid colors.

Conversion Guide

JPG to PNG

When: Adding transparency, repeated editing

Quality: No loss (preserves JPG quality)

File size: Gets larger (2-5x)

Convert JPG to PNG →

PNG to JPG

When: Reducing file size, photo distribution

Quality: Some loss (use 85-90%)

File size: Gets smaller (3-10x)

Convert PNG to JPG →

Modern Alternative: WebP

WebP combines the best of both:

• Lossy AND lossless compression
• Transparency support
• Smaller files than both

Consider WebP for web use when browser support isn't a concern.

Learn more about WebP →

Common Mistakes

❌ Saving photos as PNG

Wastes space. A photo saved as PNG is 5-10x larger than necessary.

❌ Saving screenshots as JPG

Creates ugly artifacts around text and UI elements.

❌ Saving logos as JPG

Loses transparency and creates artifacts on clean edges.

❌ Re-saving JPGs multiple times

Each save degrades quality. Work in PNG/PSD, export to JPG once.

❌ Using PNG-24 for simple graphics

PNG-8 is much smaller. Only use PNG-24 for many colors or smooth gradients.

Format Recommendation by Content Type

Quality Settings Reference

JPG Quality Levels

PNG Optimization

PNG doesn't have quality settings, but you can reduce size:

Frequently Asked Questions

Which format has better quality?

PNG preserves 100% quality. JPG loses quality but looks identical in photos at 85%+.

Why is my PNG so large?

PNGs are large for photos. Convert to JPG if it's a photograph.

Can I convert JPG to PNG to get quality back?

No. Once quality is lost in JPG compression, it's gone forever.

Is PNG always lossless?

Yes, PNG never loses quality, but the file your PNG was made from may have been lossy (like a JPG).

Should I use PNG or JPG for my website?

• Photos: JPG (or WebP)
• Graphics: PNG (or SVG)
• Modern sites: WebP for everything

Does converting between formats hurt quality?

• JPG → PNG: No loss
• PNG → JPG: Slight loss (use 85-90%)
• JPG → JPG: Quality degrades

Conclusion

Remember these rules:

1. Photographs = JPG
2. Transparency needed = PNG
3. Text/screenshots = PNG
4. Logos/icons = PNG or SVG
5. Modern web = Consider WebP

When in doubt: if it's a photo, use JPG. Everything else, use PNG.

Convert Your Images

Need to convert between formats?

• PNG to JPG - Reduce photo file sizes
• JPG to PNG - Add transparency capability
• Both to WebP - Modern optimization

Last updated: February 2026