How to Convert PNG to JPG Online (and When You Should)
2025-12-18 4 min read
PNG and JPG serve different purposes. Learn when to convert between them, how to do it without quality loss, and why this choice affects file size and rendering.
PNG files are often 5–10× larger than an equivalent JPEG. Converting PNG to JPG is one of the quickest ways to reduce image file size — but it comes with trade-offs you need to understand before converting.
Why PNG Files Are Larger
PNG uses lossless compression — every pixel is stored exactly. This means the file size grows with image complexity. A photograph saved as PNG can easily be 5–20 MB. The same photograph as a JPEG at 85% quality might be 500 KB.
What You Lose When Converting
- Transparency:JPEG doesn't support transparency. If your PNG has a transparent background, it will be replaced with white (or the color you specify) when converting to JPG.
- Lossless quality: JPEG is lossy — some image data is permanently discarded. For photographs, this is barely noticeable. For screenshots with text, you may see compression artifacts.
When Converting Makes Sense
- You have a photograph saved as PNG and need to reduce file size
- You're preparing images for email, social media, or a website
- The image has no transparent elements
- Exact pixel-perfect quality isn't critical (not for print production)
When to Keep PNG
- The image has transparency (logos, icons, UI elements)
- It's a screenshot with text or thin lines (compression artifacts ruin readability)
- You plan to edit and re-save the image multiple times
Convert images with our free Image Converter — choose your output quality and format.