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Change JPEG Photos into Lossless PNG Files

Some design tools, print templates, app stores and forms require PNG, and PNG is the better working format when you plan to edit an image repeatedly, because it never adds new compression each time you save. PDFWix converts JPG and JPEG photos to PNG in your browser, keeping every decoded pixel exactly, so you can edit, annotate or upload without further quality loss.

Change JPEG Photos into Lossless PNG Files

Some design tools, print templates, app stores and forms require PNG, and PNG is the better working format when you plan to edit an image repeatedly, because it never adds new compression each time you save. PDFWix converts JPG and JPEG photos to PNG in your browser, keeping every decoded pixel exactly, so you can edit, annotate or upload without further quality loss.

Why convert JPG to PNG with PDFWix

• Lossless from here on: No more compression artefacts each time you save.
• Meets PNG-only requirements: Design templates, stores and forms accept it.
• Batch conversion: Convert a whole set of photos at once.
• Private: Photos stay on your device.
• Free: No watermark on the output.

When to convert JPG to PNG

• Uploading to design tools, templates or stores that require PNG
• Preparing photos for repeated editing without extra quality loss
• Adding screenshots and diagrams to documentation
• Resizing afterwards with [Resize Image](https://www.pdfwix.com/resize-image)

How to Convert JPEG Pictures to PNG

1. Add JPG files — Drop .jpg or .jpeg photos into the upload box.
2. Click Convert to PNG — Each photo is saved losslessly as PNG.
3. Download — One file downloads directly; batches as a ZIP for signed-in users or one by one.

Tips for JPG to PNG

• No automatic transparency — The background stays as it is; PNG only makes transparency possible.
• Bigger files are normal — Lossless PNG needs more bytes than JPG.
• All formats — Use the [Image Converter](/convert-image) for WebP too.

Should you convert JPG to PNG?

Common goals and the right tool.

Related tools

• PNG to JPG
• Image Converter
• Resize Image
• PDF to PNG

Quick answer

To convert JPG to PNG free: open PDFWix JPG to PNG, add your .jpg or .jpeg files, click Convert to PNG and download the lossless PNG files.

How PDFWix JPG to PNG works

PDFWix JPG to PNG decodes each JPEG with the browser's native decoder and re-encodes it losslessly with canvas.toBlob("image/png"). The PNG preserves the decoded pixels exactly, so no additional quality is lost, but it cannot recover detail discarded by the original JPEG compression. PNG files are typically 2–5× larger than the source JPG. Files are processed locally and never uploaded.

What converting JPG to PNG does (and doesn't) do

Converting to PNG freezes the image in a lossless format: from that point on you can edit and save it as many times as you like without the gradual degradation JPG suffers on every re-save. It also makes the file acceptable to tools and forms that require PNG. What it can't do is add back detail the JPG already threw away, or create a transparent background by itself — the white or coloured background in your photo stays. Because PNG is lossless, expect the file to be two to five times larger. If you only need a smaller photo, Compress Image is the better tool.

At a glance

Output: Lossless PNG · Further quality loss: None · Processing: 100% in your browser

The bottom line

Going the other way? Use PNG to JPG. Need PDF pages as PNG? Use PDF to PNG.

Frequently asked questions

How do I convert JPG to PNG?

Open PDFWix JPG to PNG, add the photos, click Convert to PNG and download.

Does converting JPG to PNG improve quality?

No — it stops further loss but can't restore detail the JPG already discarded.

Will the background become transparent?

No. PNG supports transparency, but the existing background in the photo is kept.

Why is the PNG larger?

PNG is lossless and stores every pixel exactly.

Are files uploaded?

No. Conversion runs in your browser.

Is it free?

Yes, free with no watermark.