WebP vs PNG vs JPG: Which Image Format Should You Use?

The Quick Answer

Situation

Use This

|-----------|----------|

Photo for website

WebP

Photo for email

JPG

Logo with transparency

WebP or PNG

Screenshot with text

PNG or WebP

Icon

SVG

Animation

WebP or GIF

That's 90% of what you need to know. Read on for the details.

JPG — The Universal Standard

How it works: Lossy compression — removes data your eyes can't see. Best for:

• Photographs

• Realistic images

• Email attachments

• Social media uploads

Pros:

• Tiny file sizes

• Universal compatibility

• Good enough for 99% of use cases

Cons:

• No transparency

• Degrades with each re-save

• Not great for text or sharp edges

PNG — The Quality King

How it works: Lossless compression — no data is lost. Best for:

• Logos and icons (when SVG isn't an option)

• Screenshots with text

• Images that need transparency

• Images you'll edit multiple times

Pros:

• Perfect quality preservation

• Supports transparency

• Sharp edges stay sharp

Cons:

• Much larger files than JPG

• Overkill for photos

WebP — The Modern Default

How it works: Both lossy and lossless compression. Google developed it to be the best of both worlds. Best for:

• All web images

• Replacing both JPG and PNG

• Animations (replaces GIF)

Pros:

• 25-35% smaller than JPG at same quality

• Supports transparency like PNG

• Supports animation

• 97%+ browser support in 2026

Cons:

• Older software may not open .webp files

• Not ideal for email (compatibility issues)

Real File Size Comparison

Tested with a product photo (1200×800px):

Format

Quality

Size

vs JPG

|--------|---------|------|--------|

PNG

100%

2.4 MB

13x larger

JPG

85%

180 KB

baseline

JPG

70%

120 KB

33% smaller

WebP

85%

130 KB

28% smaller

WebP

70%

85 KB

53% smaller

How to Convert Between Formats

Using Snelfo

1. Go to Snelfo Image Compressor 2. Upload your image 3. Toggle "Convert to WebP" for web use 4. Download

When to Convert

• PNG → JPG: When file size matters and you don't need transparency

• JPG → WebP: When optimizing for website speed

• PNG → WebP: When you need transparency AND small file size

Impact on Website Speed

Switching to WebP can dramatically improve load times:

Metric

Before (PNG/JPG)

After (WebP)

|--------|------------------|--------------|

Page weight

4.8 MB

1.2 MB

LCP

3.2s

1.8s

Mobile load

6.1s

2.4s

Bottom Line

• For web: Use WebP for everything

• For email: Use JPG

• For logos: Use SVG or PNG

• For screenshots: Use PNG or WebP

Convert and compress your images with Snelfo →

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