Image Converter

PNG, JPG, and WebP — What's the Difference?

Choosing the right image format affects file size, visual quality, and browser compatibility. PNG uses lossless compression, meaning every pixel is preserved exactly — making it ideal for logos, icons, screenshots, and anything with sharp edges or transparency. JPG (JPEG) uses lossy compression that discards fine detail to achieve much smaller file sizes, which is why it is the standard for photographs and complex imagery where minor quality loss is imperceptible. WebP is a modern format developed by Google that provides both lossless and lossy compression at 25–35% smaller file sizes than equivalent PNG or JPG files, with full support in all major browsers.

When to Use Each Format

• PNG — Logos, icons, UI screenshots, images with text, or anything requiring a transparent background. Use PNG when pixel-perfect accuracy matters more than file size.
• JPG — Photographs, product images, and any image with many colours and gradients where some quality loss is acceptable. JPG produces the smallest files for photographic content.
• WebP — The best choice for the web in almost every case. WebP replaces both PNG and JPG with smaller files and equivalent or better quality. Use it for any image served on a website or app.

How the Converter Works

The converter runs entirely in your browser using the HTML5 Canvas API. When you upload an image, it is drawn onto an off-screen canvas and then exported in the target format using the browser's native encoding engine. No image data is sent to any server — conversion happens locally on your device in milliseconds. You can adjust the quality slider for JPG and WebP outputs to balance file size against visual fidelity.

How to Convert PNG to WebP

1. Drag your PNG onto the drop zone above, or click to browse for it.
2. Select WebP as the output format.
3. Adjust the quality slider if you want a smaller file, then download the converted image.

The same three steps convert JPG to PNG, PNG to JPG, WebP back to PNG, or any other combination — just pick a different output format. Transparency is preserved when both the source and target support an alpha channel (PNG ↔ WebP).

Convert Images Without Uploading Them

Most online converters upload your file to a server, process it there, and send it back — which means your private screenshots or client work briefly live on someone else's machine. This converter never uploads anything. The HTML5 Canvas API reads and re-encodes the image entirely on your device, so there is no upload, no queue, and no size limit beyond your browser's available memory. It also works offline once the page has loaded.

Frequently Asked Questions

Will converting to JPG lose quality?

Yes, converting to JPG applies lossy compression. The higher the quality setting (closer to 100), the less quality is lost and the larger the file. Converting a JPG back to PNG does not restore quality already lost in a previous compression step — the conversion is one-directional in terms of fidelity.

Does converting PNG to WebP preserve transparency?

Yes. WebP supports an alpha channel just like PNG, so transparent areas are preserved when converting PNG to WebP. Converting a transparent PNG to JPG will lose transparency because JPG does not support an alpha channel — the transparent areas will typically become white or black.

Is my image uploaded to a server?

No. All conversion happens locally in your browser. Your image is never sent to any server, stored anywhere, or seen by anyone else. This makes it safe to convert confidential screenshots, watermarked designs, or private photos.

Why is WebP smaller than PNG for the same image?

WebP uses a more advanced compression algorithm (based on VP8 video encoding) that analyses the image in blocks and applies predictive compression. PNG uses DEFLATE compression on raw pixel data. For most images, WebP achieves 25–34% smaller files at equivalent visual quality, making it the preferred format for web performance.

How do I convert PNG to WebP?

Drop your PNG onto the tool, choose WebP as the output format, and download the result. Conversion is instant and runs locally in your browser. Transparency is preserved because WebP supports an alpha channel just like PNG.

Is there a file size or count limit?

There is no artificial limit. Because nothing is uploaded, the only constraint is your device's memory. You can also select multiple images at once and convert them in a single batch, then download them individually or together.

Can I convert HEIC or AVIF images?

Support depends on your browser's built-in image decoding. Most modern browsers can read AVIF and can output PNG, JPG, and WebP. HEIC (the iPhone photo format) is not decoded by most desktop browsers, so convert those to JPG on the device first, then use this tool.