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Turn PNG Screenshots into Compact JPEG Photos

PNG is perfect for screenshots and graphics, but photos saved as PNG are often five to ten times larger than they need to be, and many upload forms only accept JPG. Converting PNG to JPG shrinks those files dramatically and makes them universally accepted. PDFWix converts PNG to JPG in your browser with adjustable quality and fills any transparent areas with clean white.

Turn PNG Screenshots into Compact JPEG Photos

PNG is perfect for screenshots and graphics, but photos saved as PNG are often five to ten times larger than they need to be, and many upload forms only accept JPG. Converting PNG to JPG shrinks those files dramatically and makes them universally accepted. PDFWix converts PNG to JPG in your browser with adjustable quality and fills any transparent areas with clean white.

Why convert PNG to JPG with PDFWix

• Much smaller files: Photographic PNGs shrink by 70–90%.
• Accepted everywhere: JPG passes upload forms that reject PNG.
• Clean backgrounds: Transparency becomes white rather than black.
• Private batch conversion: Convert many files on your device.
• Free: No watermark.

When to convert PNG to JPG

• Shrinking phone screenshots of photos before emailing them
• Meeting job, visa and exam portals that only accept JPG
• Reducing the size of product photos exported as PNG
• Preparing images for [JPG to PDF](https://www.pdfwix.com/jpg-to-pdf)

How to Change PNG Files to JPEG

1. Add PNG files — Drop one or several .png images.
2. Choose quality — 92% is near-identical; 80% saves more space.
3. Convert and download — Click Convert to JPG. Files keep their names with a .jpg extension.

Tips for PNG to JPG

• Keep transparent logos as PNG — JPG will add a white background.
• Text-heavy screenshots — Use 95%+ quality to keep small text crisp.
• Exact size limits — Follow up with [Compress Image](/compress-image) and a KB target.

PNG vs JPG

Choosing between the two most common image formats.

Related tools

• JPG to PNG
• Compress Image
• JPG to PDF
• WebP to JPG

Quick answer

To convert PNG to JPG free: open PDFWix PNG to JPG, add your .png files, choose a quality (92% default), click Convert to JPG and download the smaller files.

How PDFWix PNG to JPG works

PDFWix PNG to JPG draws each PNG onto a white canvas and encodes it with canvas.toBlob("image/jpeg") at 50–100% quality (default 92%). For photographic PNGs this typically reduces file size by 70–90%. Transparency is flattened onto white because the JPEG format has no alpha channel. Conversion runs locally; files are not uploaded.

When PNG to JPG makes sense — and when it doesn't

PNG stores every pixel losslessly, which is ideal for text, UI screenshots, diagrams and logos but wasteful for photographs full of subtle colour variation. JPG's lossy compression was designed for exactly those photos, so converting a photographic PNG to JPG usually cuts its size by 70–90% with no visible change. Keep PNG when the image has a transparent background you need, or when it contains small text and sharp edges that JPG would soften. For those cases, Compress Image can shrink it as WebP while keeping transparency.

At a glance

Typical size saving: 70–90% on photos · Background: Transparent → white · Processing: 100% in your browser

The bottom line

Going the other way? Use JPG to PNG. Turn the JPGs into a PDF with JPG to PDF.

Frequently asked questions

How do I convert PNG to JPG?

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

Will converting PNG to JPG reduce quality?

Slightly in theory, but at 92% quality the change is not visible for photos.

What happens to a transparent background?

It becomes white, since JPG has no transparency.

Why is my JPG so much smaller?

JPG uses lossy compression designed for photos, while PNG stores every pixel exactly.

Are files uploaded?

No. Everything runs in your browser.

Is it free?

Yes, free with no watermark.