Convert JPG to PNG Online — Free, Lossless

Convert JPG to lossless PNG format — supports transparency.

How It Works

  1. 1Upload your file by dragging it into the drop zone or clicking to browse.
  2. 2Adjust the quality slider to balance file size and visual fidelity (optional).
  3. 3Click Download to save your converted file.

About JPG to PNG

While JPG is the most common image format, there are times when you need a lossless format like PNG — for example, when editing images that will be re-saved multiple times, when you need transparency support, or when working with graphics that have sharp edges and text. This tool converts your JPG files to PNG format entirely in your browser. The resulting PNG is lossless, so no additional quality is lost during conversion.

Frequently Asked Questions

Why convert JPG to PNG?

PNG is a lossless format — converting to PNG prevents further quality degradation if you plan to edit the image multiple times. PNG also supports transparency, which JPG does not.

Is my file uploaded to a server?

No. Transmute processes everything locally in your browser using JavaScript and the Canvas API. Your files never leave your device — there is no server, no upload, no cloud processing.

Will the file be larger after converting to PNG?

Yes, PNG files are typically 2-5x larger than JPGs for photographs because PNG uses lossless compression. This is the trade-off for zero additional quality loss.

Can I add transparency after converting to PNG?

The conversion itself doesn't add transparency — it converts all pixels as-is. But since the result is now a PNG, you can open it in an image editor and add transparency by removing the background.

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