Image Formats Explained: JPG vs PNG vs WebP
Compare JPG, PNG, WebP, SVG, and GIF formats: compression algorithms, transparency, quality tradeoffs, and ideal web use cases.
Key Takeaways
- JPEG is best for complex photographic images without transparency.
- PNG offers lossless compression and full alpha transparency, ideal for screenshots and graphics.
- WebP combines the best of both: 30% smaller sizes, transparency, and high fidelity.
- SVG is the only format suitable for infinite vector scaling (logos/icons).
Filter by format in ImgEx
Easily separate JPG, PNG, WebP, and SVG images with one click.
Choosing the correct image format directly impacts website loading speeds and visual sharpness. When you extract images from websites, you will encounter multiple file extensions. Here is how they compare.
Format Breakdown: Pros and Cons
• **JPEG (.jpg / .jpeg):** Lossy compression. Great for natural photographs. No transparency support.
• **PNG (.png):** Lossless compression. Supports crisp text and alpha transparency. Larger file size.
• **WebP (.webp):** Next-gen format developed by Google. Supports both lossy and lossless modes, animation, and transparency at 25–35% smaller sizes than JPG.
• **SVG (.svg):** Scalable Vector Graphics based on XML code. Never pixelates, perfect for logos and UI icons.
• **GIF (.gif):** 8-bit color palette (max 256 colors). Primarily used for short looping animations.
Summary Comparison Table
| Format | Transparency | Best Use Case | Compression |
|---|---|---|---|
| JPEG | No | Photos, hero headers | Lossy |
| PNG | Yes | Screenshots, sharp graphics | Lossless |
| WebP | Yes | All web imagery | Lossy & Lossless |
| SVG | Yes | Logos, icons, UI | Vector (Lossless) |
Frequently Asked Questions
Why did a site serve me a WebP when I thought it was a JPG?
Many CDNs automatically detect your browser's WebP compatibility and dynamically serve WebP files even if the image URL ends in .jpg.