When to Use JPG
JPG (also called JPEG) is the most widely supported image format on the internet. It uses lossy compression, which means it reduces file size by discarding some image data. This makes JPG ideal for photographs, social media uploads, and email attachments where smaller file sizes matter more than pixel-perfect quality. Most government portals and online forms specifically request JPG files.
When to Use PNG
PNG uses lossless compression, preserving every pixel of your original image. This makes it perfect for graphics with text, logos, screenshots, and any image that needs transparency. PNG files are typically larger than JPGs, so they're best used when quality and transparency are priorities — for example, in web design, professional presentations, and digital artwork.
When to Use WebP
WebP is a modern format developed by Google that offers both lossy and lossless compression. It produces files that are 25–35% smaller than equivalent JPG or PNG files, making it the preferred format for website performance optimization. Most modern browsers support WebP, though some older software and devices may not open WebP files natively — which is why converting WebP to JPG or PNG is so common.
What About HEIC?
HEIC (High Efficiency Image Coding) is Apple's default photo format on iPhones and iPads running iOS 11 and later. HEIC files are roughly half the size of equivalent JPGs with no visible quality loss. The main drawback is compatibility: Windows PCs, Android devices, and many online services don't support HEIC natively. Converting HEIC to JPG ensures your iPhone photos can be opened and shared anywhere.