Is WebP better than JPEG?

For file size, yes. WebP produces files 25-35% smaller than JPEG at equivalent visual quality. Browser support is now 97%+ globally. The main reason to still use JPEG is compatibility with very old systems or email clients.

When should I use PNG instead of JPEG?

Use PNG when you need transparency (logos, icons, overlays) or for screenshots and graphics with sharp text and lines. JPEG introduces artifacts on sharp edges and text. PNG is lossless and preserves every pixel exactly.

Does converting JPEG to WebP lose quality?

Converting between lossy formats (JPEG to WebP) involves re-encoding, which can introduce a very small additional quality loss. For best results, convert from the original source image rather than re-encoding an already-compressed JPEG.

What image format loads fastest on websites?

WebP loads fastest for photos because it produces the smallest files at equivalent quality. For simple graphics with few colors, SVG (vector) is even smaller. The fastest-loading image is always the smallest file that maintains acceptable quality.

Should I convert all my images to WebP?

For web use, yes — WebP is smaller and supported by 97%+ of browsers. Serve JPEG as a fallback using the HTML picture element for the remaining 3%. Keep original files for archival purposes.

JPEG vs PNG vs WebP: Real File Size Comparison With 10 Test Images

Actual data, not opinions — we tested 10 common image types across all 3 formats

By Ben Praveen J · March 23, 2026

The "JPEG vs PNG vs WebP" debate has been going on for years, but most articles give you theory without data. We took 10 real-world images — the kinds you actually use on websites, social media, and documents — and saved each one in all three formats at comparable quality settings. Here are the actual file sizes.

Test Setup

All source images were 1920x1080 pixels. JPEG and WebP were saved at 80% quality (a standard web setting that balances size and visual quality). PNG was saved as-is (lossless — PNG does not have a quality slider). All images were processed through the same pipeline for a fair comparison.

We chose 10 images that represent the most common web use cases: product photography, portraits, screenshots, landscapes, logos, infographics, food photography, real estate, social graphics, and technical diagrams.

Results: File Size by Format

Image Type	JPEG (80%)	PNG	WebP (80%)	Best
Product photo (white bg)	184 KB	1,420 KB	138 KB	WebP
Portrait / headshot	210 KB	2,180 KB	152 KB	WebP
Screenshot (UI + text)	285 KB	245 KB	198 KB	WebP*
Landscape photo	320 KB	4,650 KB	228 KB	WebP
Logo (flat colors)	42 KB	18 KB	22 KB	PNG
Infographic	195 KB	380 KB	142 KB	WebP
Food photo	245 KB	3,200 KB	178 KB	WebP
Real estate listing	275 KB	3,850 KB	195 KB	WebP
Social media graphic	165 KB	520 KB	118 KB	WebP
Technical diagram	98 KB	65 KB	72 KB	PNG

*Screenshot: PNG preserves text perfectly (lossless). WebP is smaller but lossy. If text clarity is critical, use PNG. If file size matters more, WebP wins.

Key Findings

WebP Wins for Photos (25-35% Smaller Than JPEG)

Across all 6 photographic images (product, portrait, landscape, food, real estate, social graphic), WebP was 27% smaller than JPEG on average at the same quality setting. The savings ranged from 25% (product photo) to 29% (landscape). This is consistent with Google's own research showing WebP achieves 25-34% better compression than JPEG. For websites where images drive page weight, switching from JPEG to WebP can reduce total image payload by a quarter or more.

PNG is Essential for Certain Graphics

PNG won for logos (18 KB vs JPEG's 42 KB) and technical diagrams (65 KB vs JPEG's 98 KB). These images share a key characteristic: large areas of solid color and sharp edges. PNG's lossless compression excels here because it can encode repeated color patterns very efficiently. JPEG introduces visible artifacts around sharp text and lines, making it unsuitable for these image types regardless of file size.

PNG is Dramatically Larger for Photos

For photographic content, PNG is 7-15x larger than JPEG and 10-20x larger than WebP. A landscape photo at 4,650 KB in PNG was just 228 KB in WebP — a 20:1 ratio. This is because PNG preserves every pixel exactly (lossless), which is unnecessary for photos where the human eye cannot distinguish individual pixel differences. Never use PNG for photographs unless you specifically need lossless quality for editing workflows.

WebP Supports Transparency (Unlike JPEG)

A significant WebP advantage not shown in our table: WebP supports transparency like PNG but at much smaller file sizes. In our testing, a transparent product photo was 890 KB as PNG and only 165 KB as WebP with transparency — an 81% reduction. If you need transparent backgrounds for product images or overlays, WebP with transparency is the clear winner over PNG. Use our background remover to create transparent images, then convert to WebP for optimal file size.

When to Use Each Format

Based on our data, here is a practical decision guide:

Use WebP for all photos on your website (products, portraits, hero images, social graphics). It produces the smallest files at any quality level. Browser support is 97%+ globally in 2026.
Use PNG for logos, icons, technical diagrams, and screenshots where text clarity is critical. Also use PNG when you need lossless quality for editing workflows or archival.
Use JPEG as a fallback for older email clients and systems that do not support WebP. Also acceptable when WebP is not available in your toolchain.
Use SVG (not tested here) for vector graphics like logos and icons that need to scale to any size. SVG files are typically smaller than any raster format for simple graphics.

How to Convert Between Formats

Use our free Image Format Converter to switch between JPEG, PNG, and WebP. For batch optimization, compress your images with our Image Compressor which automatically outputs the optimal format. For iPhone photos saved as HEIC, use our HEIC to JPG converter first, then convert to WebP for web use. For a deeper dive into format differences, see our guide on JPEG vs PNG vs WebP.

Convert your images now: Image Format Converter — switch between JPEG, PNG, and WebP instantly. Free, no signup.

FAQ

Is WebP better than JPEG?: For file size, yes. Our tests show WebP is 25-35% smaller than JPEG at equivalent visual quality. Browser support is 97%+ globally in 2026. The main reason to still use JPEG is compatibility with very old systems or email clients that do not render WebP.
When should I use PNG instead of JPEG or WebP?: Use PNG when you need transparency (logos, icons, overlays) or for screenshots and graphics with sharp text and clean lines. JPEG introduces visible compression artifacts on sharp edges and text. PNG is lossless and preserves every pixel exactly.
Does converting JPEG to WebP lose quality?: Converting between lossy formats involves re-encoding, which can introduce a very small additional quality loss. For best results, convert from the original source image rather than re-encoding an already-compressed JPEG. The quality difference from a single re-encode is typically imperceptible.
What image format loads fastest on websites?: WebP loads fastest for photos because it produces the smallest files at equivalent quality. For simple graphics with few colors, SVG (vector) is even smaller. The fastest-loading image is always the smallest file that maintains acceptable visual quality for its display size.
Should I convert all my website images to WebP?: For web display, yes. WebP is smaller and supported by virtually all modern browsers. Use the HTML <picture> element to serve JPEG as a fallback for the remaining 3% of browsers. Keep original high-quality files for archival and future editing.

← Blog index | Convert Image | Compress Image | JPEG vs PNG vs WebP Guide | All tools