JPEG vs PNG vs WebP: Which Format Should You Use?

Quick comparison: JPEG vs PNG vs WebP

Image formats differ in how they compress data. Lossy compression discards some data to achieve smaller sizes, while lossless compression preserves every pixel. Understanding this distinction helps you pick the right format every time.

JPEG — lossy compression for photographs

JPEG reduces file size by discarding high-frequency color detail that the human eye is less sensitive to. Saving at 70–80% quality typically produces an image indistinguishable from the original at a fraction of the size.

• No transparency support
• Quality degrades with each re-save (generation loss)
• Best for photos, landscapes, portraits

PNG — lossless compression with transparency

PNG stores pixel data perfectly with no quality loss. It supports an alpha channel for transparency, making it ideal for graphics with sharp edges. However, photographs saved as PNG can be 3–5× larger than their JPEG equivalents.

• Full alpha-channel transparency
• Keeps sharp edges clean (text, line art, icons)
• Best for logos, screenshots, UI elements

WebP — next-generation format

WebP supports both lossy and lossless modes. At equivalent quality, WebP files are roughly 25–35% smaller than JPEG. It also supports transparency like PNG. Most modern browsers and image tools support it, though compatibility with older software may be limited.

Choosing the right format

Key takeaways

• Save photos as JPEG at 70–80% quality for a great size-to-quality balance.
• Use PNG when you need a transparent background.
• Choose WebP for modern web projects to get the smallest files.
• Always keep your original in PNG or a raw format; JPEG re-saves accumulate quality loss.