---
title: "JPEG vs PNG: When to Use Each Format"
description: "JPEG and PNG are two of the most common image formats. Learn the differences, when to use each, and how they compare for photos and graphics."
url: https://dblabsapps.com/glossary/jpeg-vs-png/
date: 2026-04-07
---

# JPEG vs PNG: When to Use Each Format

**JPEG** uses lossy compression and is best for photographs, where small file sizes matter and minor pixel-level loss is invisible. **PNG** uses lossless compression and supports transparency, making it the right choice for screenshots, logos, icons, and any graphics with sharp edges or text.

## JPEG: The Photo Format

JPEG (Joint Photographic Experts Group) was created in 1992 specifically for photographs. It uses a compression technique called Discrete Cosine Transform that discards visual information humans are unlikely to notice, producing files 5–10 times smaller than uncompressed images. Every save reduces quality slightly because compression is lossy, so JPEGs degrade with repeated edits.

## PNG: The Graphics Format

PNG (Portable Network Graphics) was created in 1996 as a free, lossless replacement for GIF. It preserves every pixel exactly, supports millions of colors, and includes an alpha channel for transparency. PNGs can be re-saved infinitely without quality loss but produce much larger files than JPEG for photographic content.

## Side-by-Side Comparison

- **Compression:** JPEG lossy | PNG lossless

- **Best for:** JPEG photos | PNG graphics, screenshots, logos

- **Transparency:** JPEG no | PNG yes

- **Typical file size (12MP photo):** JPEG 3 MB | PNG 30 MB

- **Quality after re-saves:** JPEG degrades | PNG identical

- **Color depth:** JPEG 8-bit | PNG 8 or 16-bit

- **Browser support:** Both universal

## iPhone Screenshots Are PNG

Screenshots taken on iPhone are saved as PNG by default. This is intentional: screenshots usually contain text, sharp lines, and UI elements that would look blurry if saved as JPEG. PNG keeps every pixel crisp. The trade-off is that screenshot files are much larger than HEIC photos. If your iPhone is filling up with screenshots, deleting them is one of the fastest ways to recover space.

## When to Use Which

- **Use JPEG for:** Photos shared online, photo email attachments, anywhere file size matters

- **Use PNG for:** Screenshots, logos, icons, charts, anything with text, anything needing transparency

- **Use HEIC for:** iPhone photos when storage matters and recipients support HEIC

## Related Terms

- [HEIC](https://dblabsapps.com/glossary/heic/)

- [HEIF](https://dblabsapps.com/glossary/heif/)

- [Image Compression](https://dblabsapps.com/glossary/image-compression/)

- [Lossless Compression](https://dblabsapps.com/glossary/lossless-compression/)

- [RAW Photo Format](https://dblabsapps.com/glossary/raw-photo-format/)

## Frequently Asked Questions

### **Is JPEG or PNG better for iPhone photos?**

JPEG is better for photos due to smaller file sizes. PNG is best for screenshots, logos, and graphics with transparency.

### **Why are PNG files larger than JPEG?**

PNG uses lossless compression, preserving every pixel. JPEG uses lossy compression, producing files 5-10 times smaller.

### **Does PNG support transparency?**

Yes. PNG supports an alpha channel for transparency. JPEG does not.

## Screenshots Filling Your iPhone?

Swype Photo Cleaner finds and removes screenshot clutter fast. All on-device.