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JPG to PNG Converter

In-browser only Canvas API Batch: up to 50 files
Your images never leave your browser. All processing happens locally.

Your converted PNG files will appear here.

Your images are processed entirely in your browser using the Canvas API.
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Overview

Convert JPG to PNG in your browser

Convert JPG images to PNG format in your browser — batch support, before/after preview, and file-size comparison. Your images never leave your device.

  • Client-side conversion — no uploads
  • Batch conversion up to 50 files
  • Before/after comparison slider
  • Download individually or as ZIP
  • EXIF orientation preserved
  • Images are decoded and converted in your browser
  • Nothing is uploaded to a server
  • Conversion runs via the Canvas API on your device
  • Files never leave your device
  • No copies are kept after you close the tab
  • Convert a JPG photo to PNG before editing it losslessly
  • Get a PNG logo to layer over a colored background
  • Produce a PNG for software that does not accept JPEG
  • Batch-convert a folder of JPG screenshots to PNG
  • Prepare a PNG so you can later add transparency in an editor

Step by step

How to Convert JPG to PNG

  1. 1
    Upload your JPG

    Drag and drop a JPG file onto the upload area, click to browse, or press Ctrl+V (Cmd+V on Mac) to paste from your clipboard.

  2. 2
    Preview your image

    Your image appears in the preview area with its file size. Check that it loaded correctly before converting.

  3. 3
    Click "Convert to PNG"

    The tool processes your image instantly in your browser using the Canvas API — no data is sent to any server.

  4. 4
    Compare before and after

    Use the slider to compare the original JPG with the converted PNG side-by-side.

  5. 5
    Download your PNG

    Click "Download PNG" to save the converted file to your device, or use "Download All as ZIP" for batch results.

Tips and background

Why Convert JPG to PNG?

  • PNG uses lossless compression

    JPEG uses lossy compression, which discards pixel data. PNG preserves every pixel of the decoded image exactly. The PNG output will typically be 2–5× larger, which is expected.

  • PNG output starts fully opaque

    JPEG has no alpha channel, so the converted PNG will have no transparency. To add transparent areas, open the PNG in an image editor after conversion.

  • Batch convert up to 50 files

    Drop multiple JPG files at once to convert them all in one pass. Download results individually or grab everything as a ZIP archive.

JPG to PNG Converter FAQ

Will the PNG look exactly the same as my JPG?
Yes. The PNG output preserves every pixel of the decoded JPEG image. Since PNG uses lossless compression, no additional quality is lost during conversion. However, any quality that was already lost during the original JPEG compression cannot be restored.
Why is my PNG file larger than the JPG?
JPEG uses lossy compression, which discards pixel data to reduce file size. PNG uses lossless compression, which preserves all pixel data. The PNG will typically be larger — often 2–5× the original JPG size — because it stores the full pixel information without discarding anything. This is expected and ensures maximum quality.
Can I convert multiple JPG files at once?
Yes. You can upload and convert multiple JPG files in a single batch (up to 50). Each file is converted individually, and you can download them one at a time or all together as a ZIP archive.
Are my images uploaded to a server?
No. All processing happens entirely in your browser using the Canvas API. Your images never leave your device — they are not uploaded to any server, stored in the cloud, or sent to any third party.
Is EXIF metadata preserved in the PNG?
Image orientation from EXIF is applied during conversion, so the output PNG will be correctly rotated. Other EXIF metadata (camera model, GPS coordinates, exposure settings) is not preserved in the current version.
Can I add transparency to my PNG after conversion?
The converted PNG starts fully opaque because JPEG does not support transparency. To add transparency, you will need to use an image editor after conversion. The PNG format supports alpha channels, so once your image is in PNG format, you can edit it to add transparent areas.
What is the maximum file size?
The recommended maximum is 50 MB per file. Very large images may fail to process on devices with limited memory. If you encounter an error, try a smaller file or reduce the image dimensions first.
Does this work on mobile devices?
Yes. The tool is fully responsive and works on smartphones and tablets. Touch targets are sized for easy tapping, and the layout adapts to your screen size.