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

Three formats dominate web images: PNG, JPG, and WebP. Each was designed for a different purpose, and choosing the wrong one costs you either file size or quality. Here is how to decide quickly.

How Each Format Handles Compression

• PNG uses lossless compression — every pixel is preserved exactly. Files are larger, but there is no degradation on re-save.
• JPG uses lossy compression — it discards subtle detail to shrink the file. Each re-save compounds the loss.
• WebP supports both lossless and lossy modes, plus transparency, and produces smaller files than PNG or JPG at comparable quality.

Quick Decision Guide

• Logo, icon, or screenshot with text → PNG (lossless, sharp edges) or WebP lossless.
• Photograph for the web → WebP lossy (smallest) or JPG if WebP is unavailable.
• Image with transparency (alpha channel) → PNG or WebP; JPG cannot store transparency.
• Image for an old email client or legacy system → JPG or PNG (broadest compatibility).
• Animated image → WebP (supports animation) or GIF (wider support but poor quality).

File Size Comparison (Typical)

• A 1 MB photo as PNG: ~3–5 MB (lossless).
• The same photo as JPG at 85% quality: ~200–400 KB.
• The same photo as WebP at equivalent quality: ~150–300 KB — roughly 25–35% smaller than JPG.

How to Convert Between Formats

1. Open the Image Converter tool.
2. Upload your image (PNG, JPG, or WebP).
3. Select the output format.
4. For JPG or WebP lossy, set quality between 80 and 90 for a good size-to-quality balance.
5. Click Convert and download the result.

Common Mistakes

• Saving photographs as PNG — you get lossless quality but files that are 10x larger than necessary.
• Converting screenshots or diagrams to JPG — sharp text and solid-color areas turn blurry due to lossy compression artifacts.
• Assuming converting JPG → PNG improves quality — the pixel data lost by JPG compression is gone; PNG just stores the already-degraded result without further loss.