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Image Format Converter

Convert between PNG, JPG, and WebP instantly in your browser.

100% Private — Your files never leave your device.

All processing happens in your browser. Nothing is uploaded to any server.

Drop files here or click to browse

Supports: JPG, PNG, WebP

Max 50MB per file

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10%100%

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How it works

Why Convert Image Formats?

Different situations call for different image formats:

  • Uploading to a website that only accepts JPG? Convert your PNG.
  • Need transparency for a logo? Convert JPG to PNG (you’ll get a white background, but can edit later).
  • Optimizing for web speed? Convert to WebP for 25-34% smaller files.
  • Sharing with someone who can’t open WebP? Convert to JPG for universal compatibility.

Format Comparison

FeatureJPGPNGWebP
CompressionLossyLosslessBoth
TransparencyNoYesYes
AnimationNoNoYes
File size (photo)SmallLargeSmallest
File size (graphic)MediumMediumSmall
Browser supportUniversalUniversalModern browsers
Best forPhotosGraphics, logosWeb optimization

How It Works

This converter uses your browser’s Canvas API to decode the source image and re-encode it in the target format. All processing happens locally — nothing is uploaded to any server.

For JPG and WebP output, you can adjust the quality slider to balance file size against visual quality. PNG output is always lossless (no quality slider needed).

Tips

  • Batch convert: Drop multiple files at once to convert them all with the same settings.
  • Check the output size: After converting, compare the file sizes to make sure you’re actually saving space.
  • JPG to PNG won’t add transparency: The conversion preserves the existing pixel data. To add transparency, you’ll need an image editor like GIMP or Photoshop.

Real-World Examples

1

PNG screenshots to JPG for email

Target Format: JPG Quality: 90

A project manager has 15 PNG screenshots (3-5MB each, 60MB total) to attach to an email report. Converting to JPG at 90% quality reduces each to 300-500KB — the entire set fits under 10MB. No visible quality difference on screen.

2

JPG photos to WebP for website

Target Format: WebP Quality: 85

A web developer converts 40 JPG product photos to WebP for an e-commerce site. Average file size drops from 800KB to 200KB (75% smaller) with no visible quality loss. Page load time improves by 2+ seconds on mobile connections.

3

WebP images to PNG for graphic design

Target Format: PNG Quality: 100

A graphic designer receives WebP images from a client but needs PNG for their Photoshop workflow. Converting to lossless PNG preserves all quality for editing. Files are larger but fully compatible with the design software.

Frequently Asked Questions

What's the difference between PNG, JPG, and WebP?
JPG uses lossy compression — great for photos, small file sizes, but no transparency. PNG uses lossless compression — perfect for graphics, logos, and screenshots with transparency, but larger files. WebP is a modern format by Google that supports both lossy and lossless compression with transparency, producing smaller files than both JPG and PNG.
When should I convert PNG to JPG?
Convert PNG to JPG when you have a photo saved as PNG (unnecessarily large) and don't need transparency. A 5MB PNG photo typically becomes a 500KB JPG at 90% quality with no visible difference. JPG is the standard for photos on the web.
When should I convert JPG to PNG?
Convert JPG to PNG when you need transparency (the JPG will get a white background preserved) or when you need a lossless format for further editing. Note that converting JPG to PNG won't improve quality — the lossy compression from the original JPG is permanent.
Is WebP better than JPG and PNG?
For web use, yes. WebP produces 25-34% smaller files than JPG at equivalent quality, and smaller files than PNG with similar lossless quality. The main drawback is compatibility — while all modern browsers support WebP, some older software and email clients don't. For maximum compatibility, use JPG for photos and PNG for graphics.
Does converting formats lose quality?
Converting between lossy formats (e.g., JPG to WebP or WebP to JPG) loses a tiny amount of quality each time — this is called generation loss. Converting to PNG (lossless) preserves whatever quality the source has. Converting from lossless to lossy (PNG to JPG) loses some quality on the first conversion. Best practice: always work from the highest-quality original.

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