How to Convert Images Between WebP, JPG, and PNG

2026-05-013 min read

Choosing the right image format makes a real difference for web performance. WebP, JPG, and PNG each have distinct strengths, and converting between them is easier than most people think.

Understanding the Three Formats

PNG: Lossless compression, supports transparency (alpha channel). Best for screenshots, logos, icons, and images with text.
JPG: Lossy compression, no transparency. Best for photographs and images where a small file size matters more than pixel-perfect quality.
WebP: Google's modern format. Supports both lossless and lossy compression, and transparency. Typically 25–35% smaller than equivalent JPG or PNG at similar quality.

When to Convert

PNG → WebP: Reduce file size for web use while keeping transparency support.
JPG → WebP: Cut bandwidth on photo-heavy pages without noticeable quality loss.
WebP → PNG or JPG: When compatibility with older tools or systems is required.
PNG → JPG: When you need the smallest possible file for a photo and transparency is not needed.

Tip: Converting a JPG to PNG does not restore lost quality — JPG compression is permanent. The PNG will simply be a lossless copy of the already-compressed JPG.

How to Convert Images in Your Browser

Open the Image Converter tool.
Drag and drop your image or click to upload.
Select the output format: PNG, JPG, or WebP.
For JPG or WebP, adjust the quality slider (80–90% is a good default).
Click Convert and download the result.

Common Mistakes

Setting JPG quality too low (below 70%) causes visible artifacts, especially around text and edges.
Converting a screenshot to JPG — text becomes blurry because JPG struggles with sharp color boundaries.
Forgetting that WebP support is universal in modern browsers but may cause issues in some older email clients.

Quality Settings Explained

The quality slider controls the tradeoff between file size and visual fidelity. For JPG: 90–95 is near-lossless, 75–85 is a good web balance, below 65 introduces noticeable compression artifacts. For WebP lossy mode, the same rough scale applies, but the resulting file will be noticeably smaller than JPG at the same quality value.