JPG to PNG Converter

Free JPG to PNG converter. Batch up to 10 images, track progress step by step, and download as PNG or ZIP. 100% local in your browser. No account.

How do I convert JPG to PNG?

Add your JPG files, click convert, and download PNG images. Decoding and encoding run entirely in your browser - files are never uploaded to a server.

Can I convert multiple JPG files at once?

Yes. Add up to 10 images per batch. When you convert more than one file, download everything as a single ZIP.

Are my images uploaded?

No. Every step runs locally in your browser. Close the tab and the data is gone. ONNOFF does not receive, store, or log your files.

Will converting JPG to PNG reduce quality?

PNG export preserves full resolution from your source JPG files without extra compression beyond the format itself.

Is this converter free?

Yes. Free, no account, no watermark. Use it for personal or commercial workflows that comply with your local laws and the rights you hold on the images.

JPG → PNG

Free browser tool

Convert JPG to PNG without losing quality

Drop up to 10 JPG images. Convert to PNG in your browser with live progress and final file size. Nothing uploads - download one file or a ZIP.

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How it works

  1. 1

    Add images

    Drop JPG files or browse - up to 10 at a time.

  2. 2

    Convert locally

    Each image is decoded and re-encoded as PNG in your browser. Watch progress at every step.

  3. 3

    Download

    Save a single PNG file or download a ZIP when you converted multiple images.

Other conversions

JPG → HEICJPG → WEBPHEIC → PNGWEBP → PNG

Private by default

Images never leave your browser. No cloud upload, no account. Built by ONNOFF.

FAQ

How do I convert JPG to PNG?
Add your JPG files, click convert, and download PNG images. Decoding and encoding run entirely in your browser - files are never uploaded to a server.
Can I convert multiple JPG files at once?
Yes. Add up to 10 images per batch. When you convert more than one file, download everything as a single ZIP.
Are my images uploaded?
No. Every step runs locally in your browser. Close the tab and the data is gone. ONNOFF does not receive, store, or log your files.
Will converting JPG to PNG reduce quality?
PNG export preserves full resolution from your source JPG files without extra compression beyond the format itself.
Is this converter free?
Yes. Free, no account, no watermark. Use it for personal or commercial workflows that comply with your local laws and the rights you hold on the images.

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