BYTETOOLS

JPG to PNG Converter

Convert JPG or JPEG images to PNG format instantly in your browser. Batch convert multiple files at once and download each PNG — free, no uploads.

Drop JPG images here — multiple files supportedConverted locally — never uploaded

What is the JPG to PNG Converter?

The ByteTools JPG to PNG converter turns . jpg and .

  • Batch conversion — drop multiple JPGs at once
  • Lossless PNG output, no further quality degradation
  • Per-file download buttons with size shown
  • Instant conversion, no waiting for uploads
  • Free and unlimited, no sign-up or watermark
  • Private — files never leave your device

How to use the JPG to PNG Converter

  1. 1

    Drop one or more JPG images into the upload area (or click to browse).

  2. 2

    The tool converts each file to PNG automatically.

  3. 3

    Review the converted list showing each file's new size.

  4. 4

    Click Download next to each PNG to save it.

About the JPG to PNG Converter

The ByteTools JPG to PNG converter turns .jpg and .jpeg photos into lossless PNG files. Drop in one image or a whole batch — each file is converted instantly and listed with its own download button.

PNG is the format of choice when you need lossless quality for further editing, screenshots, logos or graphics that will be re-saved multiple times. Converting to PNG stops any further generation loss that repeated JPEG saves would cause.

Conversion runs entirely inside your browser using the canvas API. Your photos are never uploaded to any server, so the tool is safe for personal pictures and confidential work documents.

Frequently asked questions

Does converting JPG to PNG improve quality?

No — quality lost to JPEG compression is gone forever and PNG cannot restore it. What PNG does is prevent any further loss: every subsequent save of the PNG is lossless, which is why it is the right format for images you plan to edit repeatedly.

Why is the PNG file so much bigger than my JPG?

PNG stores photos losslessly, while JPEG discards fine detail to compress heavily. A photographic JPG converted to PNG can grow 5–10×. That is normal — use PNG for editing and graphics, and keep JPG or WebP for sharing photos on the web.

Can I convert multiple JPG files to PNG at once?

Yes. Select or drop as many JPGs as you like — each one is converted in your browser and listed with its own download button, so you can grab exactly the files you need.

Does JPG to PNG conversion add transparency?

The PNG format supports transparency, but converting does not create any — JPEGs have no alpha channel, so the converted PNG is fully opaque. To get a transparent background you would need to remove the background in an editor afterwards.

Is it safe to convert sensitive images here?

Yes. The conversion is done by your own browser using the canvas API — no image data is transmitted, logged or stored anywhere. You can even use the tool offline once the page has loaded.

Guides for JPG to PNG Converter

Related tools