Image Converters

Format mismatches come up all the time. You copy photos from your iPhone to a PC and find HEIC files that won't open. A client sends a transparent PNG logo but your CMS only accepts JPG. A page speed audit flags your JPGs as too large and suggests WebP. Each format has tradeoffs. JPG compresses photos well but has no transparency, PNG keeps every pixel but makes large files, WebP is smaller than both but some older software can't open it, AVIF compresses best but needs current browsers, and HEIC saves space on Apple devices but causes trouble elsewhere.

Converting solves these mismatches, as long as you know what changes. Transparency is lost when converting to JPG, and transparent areas are filled with a color you choose. Lossy formats such as JPG, WebP and AVIF give up a little detail each time they're saved. iPhone photos often use a wider color space than standard web images, so colors can shift slightly after conversion.

The converters process images in your browser with the browser's own image encoders and WebAssembly codecs, including a built-in HEIC decoder for browsers that can't read HEIC. Your files are never uploaded, so nothing waits on an upload or download, and each converter handles up to 30 files of up to 50 MB at a time.

Frequently Asked Questions

What happens to image quality during conversion?

Lossy formats (JPG, most WebP and AVIF) discard some detail to make files smaller, and converting from one lossy format to another adds a little more loss. Converting to a lossless format such as PNG adds no loss, but the file gets larger. Converting a lossless image to a lossy format, such as PNG to JPG, introduces compression artifacts.

Why does transparency disappear when converting to JPG?

JPG can't store transparency. When you convert a transparent image to JPG, the transparent areas have to be filled with a solid color. The converters here use white by default and let you pick black or any custom color. Keep PNG, WebP or AVIF if you need the transparency.

Should I convert HEIC to JPG or PNG?

JPG for photos and everyday sharing: the files are small and open everywhere. PNG if you plan to edit the photo several times or need an exact copy without new compression, at the cost of much larger files.

Is WebP better than JPG?

For websites, usually. WebP files are typically smaller than JPG at similar quality, and all current browsers, including Chrome, Firefox, Edge and Safari, display them. Stick with JPG for email, documents, print and older software.