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Image format converter

Convert images between JPEG, PNG, WebP and AVIF formats in your browser. Adjustable quality, instant preview, no server upload. Perfect for optimizing images for the web.

Drop image, click to browse, or Ctrl+V to paste

What is Image Format Converter?

An image format converter changes images from one file format to another. Different formats serve different purposes: JPEG for photographs with small file sizes, PNG for images requiring transparency, and WebP for modern web optimization with 25-35% smaller files than JPEG. This tool converts between all three formats entirely in your browser using the Canvas API — no images are uploaded to any server. You can adjust the output quality for JPEG and WebP formats to balance file size and visual quality. The converter shows a size comparison between the original and converted image, helping you choose the optimal format for your use case. Whether you are converting PNG screenshots to JPEG for email, optimizing images to WebP for faster web pages, or converting WebP images to PNG for compatibility, this tool handles it instantly.

How to Use Image Format Converter

  1. 1

    Upload your image

    Drag and drop any image file or click to browse. The tool shows the original file name, size, and format.

  2. 2

    Select output format and quality

    Choose PNG, JPEG, or WebP as the output format. For JPEG and WebP, adjust the quality slider to control the compression level.

  3. 3

    Convert and download

    Click Convert to process the image. Review the size comparison, then click Download to save the converted file.

Features

  • Convert between JPEG, PNG, WebP and AVIF formats
  • Adjustable quality slider for JPEG and WebP output
  • File size comparison showing savings or increase
  • Drag-and-drop upload with instant preview
  • PNG transparency preservation when converting to PNG
  • Zero server upload — all processing in your browser

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Frequently Asked Questions

Which format should I choose?+
Use JPEG for photographs and complex images (smallest file size). Use PNG for images with transparency, screenshots, or graphics with sharp edges. Use WebP for the best of both worlds — smaller than JPEG with optional transparency support.
Does converting to JPEG lose quality?+
Yes, JPEG is a lossy format. Each conversion may reduce quality slightly. At 90% quality, the loss is imperceptible to most viewers. For lossless quality, use PNG (larger files) or WebP at 100% quality.
Will PNG transparency be preserved?+
Transparency is preserved when converting to PNG. Converting a transparent PNG to JPEG will replace transparent areas with white, since JPEG does not support transparency. WebP supports transparency.
What quality setting should I use?+
For web images: 80-85% offers great quality with significant size savings. For print: 95-100%. For thumbnails: 70-80%. PNG format has no quality setting as it is always lossless.
Is WebP supported by all browsers?+
WebP is supported by all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. Only Internet Explorer and very old browser versions lack WebP support. For maximum compatibility, JPEG remains the safest choice.
Is my image uploaded to a server?+
No. All format conversion happens in your browser using the Canvas API. Your images never leave your device.