JPG to PNG Converter - Convert JPG to PNG Online Locally

Convert JPG/JPEG images to PNG format directly in your browser. 100% local, privacy-first conversion with no file size limits and no server uploads.

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Drop images here
Supports JPG, PNG, WebP, GIF, BMP, and SVG. Select multiple files; images are not uploaded.

Add images, choose a target format, then start local conversion.

All images are processed locally in your browser and are not uploaded.

Original and output previews will appear here after you add and convert images.

How to Use

  1. Upload JPG: Select or drop your .jpg or .jpeg file.
  2. Format Preset: The target output format is preset to PNG.
  3. Convert File: Click the convert button to run the local canvas transcoder.
  4. Download PNG: Download the output file instantly.

Core Features

  • 100% Private: Your graphics are converted entirely in-browser. No files leave your device, ensuring total asset confidentiality.
  • Support Alpha Channel: Converts static images into a lossless PNG container ready for transparent background editing.
  • Batch Processing: Drop multiple JPG files to render them in sequence in seconds.
  • Free with No Limits: 100% free with no registration or conversion queues.

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Calculation Logic

JPG is a lossy compressed format optimized for photographs, whereas PNG is a lossless format supporting alpha transparency. This tool decodes the JPG pixels onto an HTML5 canvas and serializes it to a PNG container locally.

FAQ

Does converting to PNG make the background transparent?

No. The source JPG lacks alpha channel data. Converting simply prepares the image container to support transparent properties in future editors.