In this article
PNG vs JPEG: Key Differences
PNG (Portable Network Graphics) is a lossless format that supports transparency, making it ideal for graphics, logos, and screenshots. JPEG (Joint Photographic Experts Group) uses lossy compression optimized for photographs, producing much smaller files at the cost of some quality.
Converting PNG to JPEG is common when you need smaller file sizes for web uploads, email attachments, or social media posts — especially when the image doesn't require transparency.
How Our Converter Works
CheckTown's PNG to JPG converter runs entirely in your browser — no files are uploaded to any server:
- Upload a PNG image (up to 50 MB) via drag-and-drop, file picker, or clipboard paste
- Adjust the JPEG quality slider and choose a background color to replace transparent areas (default: white)
- Click Convert and see the result with a side-by-side file-size comparison
Try it free — no signup required
Convert PNG to JPG →When to Convert PNG to JPEG
PNG-to-JPEG conversion is helpful in many practical situations:
- Web optimization — JPEG files are significantly smaller than PNGs for photographic content, improving page load times
- Email and messaging — reduce file size so images stay below attachment limits without noticeable quality loss
- Platform requirements — some services only accept JPEG uploads, especially for profile photos or product images
Frequently Asked Questions
What happens to transparent areas?
JPEG does not support transparency. Transparent areas are filled with the background color you choose (white by default). You can pick any color using the color picker.
Will converting to JPEG reduce quality?
JPEG is a lossy format, so there is a small quality trade-off. At 80–92 % quality the difference is usually imperceptible for photographs, while file size drops by 50–80 %.
Is my image uploaded to a server?
No. The conversion uses the browser's Canvas API. Your image never leaves your device.