Image format guide
JPEG vs PNG vs WebP: choose for the image, not the trend
A photo, a logo, and a software screenshot do not compress the same way. The best image format is the one that preserves the details your image needs at a size and compatibility level the destination accepts.
Reviewed July 31, 2026 · 9 min read
Short answer
The practical choice
Use JPEG for broadly compatible photographs when transparency is not needed. Use PNG for lossless screenshots, diagrams, interface graphics, and images that need alpha transparency. Use WebP for web delivery when you want modern lossy or lossless compression and your publishing system supports it. Keep an editable or lossless master before creating smaller delivery copies.
JPEG works well for continuous-tone photographs
JPEG was designed around photographic images with gradual color and brightness changes. Lossy compression can reduce a photo dramatically, but stronger settings may create blocking, ringing near edges, and smeared fine texture.
JPEG does not provide the alpha transparency used for soft transparent edges. It is a dependable choice for photos in email, documents, older systems, and publishing workflows that expect .jpg files.
- Good fit: photographs and camera images
- Weak fit: logos, small text, flat diagrams, transparent graphics
- Best practice: export once from a clean master instead of repeatedly saving the JPEG
PNG protects exact edges and transparency
PNG uses lossless compression, so decoded pixels are not changed by the compression step. That makes it useful for screenshots, line art, interface elements, charts, and graphics where crisp edges matter.
Lossless does not mean small. A full-color photograph saved as PNG can be much larger than a visually acceptable JPEG or WebP. PNG earns its size when exact pixels or transparency matter.
- Good fit: screenshots, logos, diagrams, text-heavy graphics
- Supports alpha transparency
- Often inefficient for large photographs
- Useful as an intermediate asset when more editing is expected
WebP offers two different compression modes
WebP supports both lossy and lossless image coding, plus transparency. A lossy WebP can be a compact delivery format for photos, while lossless WebP can suit graphics that need exact reconstruction.
Browser support is broad, but the receiving application, print vendor, CMS, or document workflow may still prefer JPEG or PNG. Check the destination rather than assuming browser support settles the question.
Use a master and delivery-copy workflow
Keep the original camera file, design source, or lossless export. Create JPEG, PNG, or WebP copies for a specific website, email, document, or upload field.
Changing the extension is not conversion, and converting a small JPEG to PNG cannot restore detail already removed. The PNG may be larger while showing exactly the same JPEG artifacts.
- Photo for broad sharing: JPEG
- Website photo with a modern pipeline: WebP
- Screenshot with text: PNG or lossless WebP
- Logo with transparency: PNG or lossless WebP
- Unknown recipient requirements: confirm accepted formats first