Quick Answer

WEBP (or JPEG)

For photos & web images

PNG (or SVG)

For logos & graphics

WEBP (or GIF)

For animations

Format Deep Dives

JPEG / JPG

Compression: LossyTransparency: NoTypical size: 50–500 KB

JPEG is the most widely used format for photographs and realistic images. Its lossy compression discards imperceptible data to achieve small file sizes. At 75–85% quality, the difference from the original is invisible to the human eye.

Best for

Photos, product images, blog images

Smallest file size for photos

Universal browser and device support

Adjustable quality level

Ideal for Core Web Vitals optimization

Avoid for

Logos, text, screenshots, graphics with sharp edges

Lossy — some quality lost on each save

No transparency support

Not ideal for text or sharp graphics

Artifacts visible at low quality settings

Compress JPEG PNG to JPG WEBP to JPG

PNG

Compression: LosslessTransparency: Yes (alpha channel)Typical size: 100 KB – 5 MB

PNG uses lossless compression — every pixel is preserved perfectly. This makes it ideal for graphics, logos, and screenshots where sharp edges and text must remain crisp. The trade-off is larger file sizes compared to JPEG.

Best for

Logos, icons, screenshots, graphics with text

Lossless — perfect quality preservation

Transparency support (alpha channel)

Ideal for logos and graphics

No compression artifacts

Avoid for

Large photographs (file size too large)

Much larger file size than JPEG for photos

Not suitable for photographs on web

No animation support

PNG to JPG JPG to PNG Compress PNG

WEBP

Compression: Both (lossy & lossless)Transparency: YesTypical size: 30–300 KB

WEBP is Google's modern image format designed specifically for the web. It achieves 25–35% smaller files than JPEG at equivalent quality, supports transparency like PNG, and even supports animation like GIF. It's the recommended format for web performance.

Best for

All web images — photos, graphics, icons

25–35% smaller than JPEG at same quality

Supports transparency (like PNG)

Supports animation (like GIF)

Both lossy and lossless modes

Improves Core Web Vitals scores

Avoid for

When you need maximum compatibility with older software

Not supported by older browsers (IE, old Safari)

Not ideal for print workflows

Some older software can't open WEBP

JPG to WEBP WEBP to JPG PNG to JPG

GIF

Compression: Lossless (limited palette)Transparency: Yes (1-bit, no alpha)Typical size: 50 KB – 10 MB

GIF is an old format (1987) that supports animation and basic transparency. It's limited to 256 colors, making it unsuitable for photographs. For modern animated content, WEBP or video formats are more efficient.

Best for

Simple animations, memes, basic graphics

Animation support

Universal browser support

Simple transparency

Avoid for

Photographs, complex images, large animations

Limited to 256 colors

Large file sizes for animations

Poor quality for photographs

WEBP is better in every way

Compress Image Convert to WEBP

Format Decision Table

Use this table to quickly find the right format for any use case:

Use Case	Recommended	Fallback	Why
Website hero image (photo)	WEBP	JPEG 80%	Best performance + quality
Product photo (ecommerce)	WEBP	JPEG 80%	Fastest load, best conversion
Company logo	SVG	PNG	Scalable, transparent
Blog post image	WEBP	JPEG 75%	PageSpeed optimization
Screenshot / UI image	PNG	WEBP lossless	Sharp text and edges
Social media post	JPEG 85%	PNG	Platform compatibility
Email attachment	JPEG 70%	PNG	Small file size
Animated content	WEBP	GIF	Smaller file, better quality
Icon / favicon	SVG	PNG	Scalable at any size
Print / archiving	PNG or TIFF	JPEG 95%	Maximum quality

Free Format Conversion Tools

PNG to JPG

Convert PNG to JPEG — reduce file size by 70–80%

JPG to WEBP

Convert JPEG to WEBP — 25–35% smaller files

WEBP to JPG

Convert WEBP back to JPEG for compatibility

JPG to PNG

Convert JPEG to PNG for lossless quality

Frequently Asked Questions

Should I use JPEG or PNG for my website?

Use JPEG (or WEBP) for photographs and realistic images — it achieves much smaller file sizes. Use PNG for logos, icons, and graphics with text or sharp edges where lossless quality is required. For maximum performance, convert both to WEBP.

Is WEBP better than JPEG?

Yes, for web use. WEBP achieves 25–35% smaller file sizes than JPEG at equivalent visual quality. It also supports transparency (unlike JPEG) and animation. The only downside is that very old browsers don't support it, but 95%+ of users have WEBP-compatible browsers.

When should I use PNG instead of JPEG?

Use PNG when you need: (1) transparency/alpha channel, (2) lossless quality for logos or text, (3) screenshots or UI images where sharp edges matter. For photographs, JPEG or WEBP is always better.

What is the best image format for SEO?

WEBP is the best format for SEO because it produces the smallest file sizes, which directly improves page load speed and Core Web Vitals scores — both Google ranking factors. Use WEBP with a JPEG fallback for maximum compatibility.

Can I convert JPEG to PNG without quality loss?

Converting JPEG to PNG won't recover lost quality — the data discarded during JPEG compression is gone permanently. However, the PNG file will be a lossless copy of the JPEG. The file size will be much larger, but no additional quality will be lost in the conversion.

What image format does Google recommend?

Google recommends WEBP for web images in their PageSpeed Insights and Core Web Vitals documentation. WEBP provides the best balance of quality and file size for web use.