Image Format Converter

Convert images locally between JPG, PNG, WebP, AVIF, and Base64. High-speed, private, browser-based converter with instant preview.

A versatile multi-format image converter supporting JPG, PNG, WebP, AVIF, and Base64 strings. Convert individual graphics or batch collections with customized quality settings.

How to use

  1. Select your desired conversion mode (e.g. JPG → PNG, PNG → WebP, or Image → Base64).
  2. Drag & drop or browse to upload one or multiple images (or paste a Base64 string).
  3. Adjust quality or transparent background fill settings if needed.
  4. Review the file size difference and download your converted files instantly.

Frequently asked questions

Are my photos uploaded to any external server?

Never. All image processing occurs directly in your local browser memory using HTML5 Canvas and the Blob API. Zero data leaves your device.

How is PNG transparency handled when converting to JPG?

Since JPEG does not support transparency, transparent areas are cleanly composited over a solid white background to avoid black background artifacts.

Is AVIF conversion supported across all browsers?

Modern Chrome, Edge, Firefox, and Safari support AVIF natively. If your browser lacks AVIF canvas encoding, the tool gracefully notifies you and defaults to WebP.

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