How to Convert PNG to JPG Online Free

Converting PNG to JPG is one of the most effective ways to reduce image file size. A photograph stored as PNG can be 5–10× larger than the same photograph stored as JPG at quality 80. The reason: PNG is lossless and stores every pixel precisely; JPG uses lossy compression that discards fine details the eye doesn't notice.

When to convert PNG to JPG

Convert if:

• The image is a photograph (people, landscapes, product photos)
• No transparency is needed (JPG doesn't support alpha channels)
• The image will be used for web, email, or social media
• You need a smaller file size

Don't convert if:

• The image has a transparent background (logo, icon, sticker)
• The image contains text, screenshots, or line art (JPG creates visible artifacts)
• You need lossless quality for editing

How much smaller is JPG than PNG?

For photographs:

• A 1200 × 800 PNG photo: ~1–3 MB
• The same image as JPG quality 80: ~100–300 KB (3–10× smaller)
• The same image as JPG quality 60: ~60–150 KB (5–20× smaller)

For graphics with text or flat colors: JPG saves less space (and introduces artifacts) — keep PNG for these.

The quality trade-off

JPG quality settings (typically 0–100) control the compression ratio:

• Quality 90–100: Near-lossless for photographs. File is ~60–80% smaller than PNG but large for web.
• Quality 80: Recommended for web. Good visual quality, ~70–90% smaller than PNG.
• Quality 60–70: Acceptable for thumbnails and previews. ~80–95% smaller than PNG.
• Quality below 50: Visible artifacts. Only use for very small thumbnails.

How to convert PNG to JPG with Resizo

1. Open Resizo in your browser — no account needed.
2. Drop your PNG file onto the tool.
3. Optionally resize: enter new dimensions for the output image.
4. Select JPG as the output format.
5. Download the converted JPG file.

Resizo processes the conversion in your browser — your PNG file is never uploaded to a server.

PNG to JPG vs PNG to WebP

If you can choose, WebP is better than JPG for web use:

• WebP at equivalent quality is 25–35% smaller than JPG
• WebP supports transparency (useful if you later need it)
• All modern browsers (Chrome, Firefox, Safari, Edge) support WebP

JPG is the better choice if compatibility with older tools or systems is required.