How to Convert PNG to JPEG — Free, Online & Without Losing Quality

PNG files are great for quality — but they are often 3–5× larger than they need to be. Converting PNG to JPEG is one of the fastest ways to shrink image files without any visible difference. This guide covers exactly when to do it, what quality setting to use, and how to convert PNG to JPEG free in your browser.

PNG vs JPEG — What Is the Difference?

PNG vs JPEG — Quick Comparison

When Should You Convert PNG to JPEG?

Converting PNG to JPEG makes sense in these situations:

• Sharing photos by email or messaging — JPEG files are 60–80% smaller, so they attach and send faster.
• Uploading images to a website — smaller files mean faster page loads, which improves SEO and user experience.
• Saving storage space — if you have a folder of PNG photos, converting them to JPEG can free up gigabytes.
• Social media uploads — most platforms (Instagram, Facebook, X) re-compress images anyway; sending JPEG avoids a double-compression hit.
• Printing services — many online print labs accept JPEG and prefer it to large PNGs.

When Should You Keep PNG?

Do not convert to JPEG when:

• The image has a transparent background — logos, stickers, cutouts. JPEG replaces transparency with white. Use PNG or WebP instead.
• The image contains text or sharp lines — JPEG compression creates blurry "artifacts" around sharp edges. Screenshots and UI designs look noticeably worse as JPEG.
• You plan to edit the image further — every JPEG save degrades quality. Keep PNG as your working source file and export JPEG only for the final version.
• You need pixel-perfect accuracy — for medical images, technical diagrams, or archival copies, lossless PNG is the right choice.

Understanding JPEG Quality Settings

When you convert PNG to JPEG, you choose a quality level from 1–100%. Higher quality = larger file. Here is what each level means in practice:

File sizes above are approximate for a typical 12-megapixel photo. Actual sizes vary with image complexity.

How to Convert PNG to JPEG Free (Step by Step)

1. Open the converter — click the button below or go to convertlo.pro/png-to-jpeg.html. PNG and JPEG are pre-selected.
2. Drop your PNG file — drag it onto the drop zone or click Browse. Supports files up to 50 MB. You can also drop multiple files for batch conversion.
3. Set the quality — the default is 85%. Drag the slider left for a smaller file or right for higher quality.
4. Click Convert — conversion runs entirely in your browser in under a second. No file is uploaded anywhere.
5. Download your JPEG — the file downloads automatically. The filename keeps the original name with a .jpg extension.

What Happens to Transparent Areas?

This is the most common surprise when converting PNG to JPEG: transparency does not survive. JPEG has no concept of transparent pixels. Every transparent or semi-transparent area is filled with a solid colour — white by default.

This means:

• A logo with a transparent background becomes a logo on a white rectangle.
• A product photo cut out from its background gets a white background.
• Semi-transparent shadows become opaque white blobs.

If transparency matters, keep the file as PNG or convert to WebP, which supports transparency and is still smaller than PNG.

Can You Convert Multiple PNG Files at Once?

Yes. Convertlo supports batch conversion. Enable the Batch convert toggle before selecting files, then drop all your PNGs at once. Each file converts separately and downloads individually with its original filename. There is no limit on the number of files — only the 50 MB per-file maximum applies.

Does Converting JPEG Back to PNG Restore Quality?

No. This is a common misconception. Once a JPEG is created, the discarded detail is gone permanently. Converting JPEG → PNG gives you a lossless container holding already-degraded pixels — a larger file with the same quality as the JPEG. Always keep the original PNG if you may need it later.

Frequently Asked Questions

Does converting PNG to JPEG reduce quality?

Yes — JPEG is a lossy format, so some image data is discarded during compression. At 85% quality the difference is invisible to most people for photographs. For images with text, sharp lines, or flat colours, the compression artifacts can be visible. Use 90%+ quality if sharpness is critical.

What JPEG quality setting should I use?

75–80% for social media and email attachments. 80–85% for website images where page speed matters. 90–95% for product photos or print where near-perfect quality is required. Avoid 100% — it produces very large files with almost no visible benefit over 95%.

What happens to transparent areas when converting PNG to JPEG?

Transparent pixels become white (or another solid colour depending on the tool). JPEG has no alpha channel support. If you need transparency in the output, convert to WebP instead — it is smaller than PNG and fully supports transparency.

Is PNG to JPEG conversion free on Convertlo?

Yes — completely free. Convertlo converts PNG to JPEG entirely in your browser using the HTML5 Canvas API. No file is uploaded to any server, no account is needed, and there is no watermark on the output.

Can I convert PNG to JPG? Is that the same as JPEG?

Yes — .jpg and .jpeg are the same format, just different file extensions. Convertlo outputs .jpg files, which are accepted everywhere a .jpeg file would be.

How much smaller is JPEG compared to PNG?

Typically 60–80% smaller for photographs. A 3 MB PNG photo usually becomes 400–700 KB JPEG at 85% quality. Screenshots and graphics compress less dramatically because PNG already handles those efficiently.

Can I convert PNG to JPEG on my phone?

Yes. Convertlo works in any modern mobile browser — Safari on iPhone or Chrome on Android. Open convertlo.pro/png-to-jpeg.html, tap Browse or drop your PNG, set the quality, and download the JPEG. No app required.

Is it safe to convert PNG to JPEG for print?

At 90–95% quality, yes. Print shops typically require 300 DPI resolution and accept JPEG at high quality. Just make sure the original PNG has sufficient resolution before converting — converting a small PNG to JPEG does not add detail that was never there.