Convert PNG to JPG
The usual reason for this conversion is size. A PNG screenshot or photo can be several megabytes where the equivalent JPG is a few hundred kilobytes, and plenty of upload forms enforce limits that a PNG will not fit under.
Files are decoded and re-encoded inside this browser tab. Nothing is uploaded — you can disconnect from the internet after this page loads and conversion still works.
The conversion is straightforward with one consequence worth understanding before you run it: transparency cannot survive, because JPG has no alpha channel.
How to convert PNG to JPG
- Drag your PNG files onto the box above, or click it to browse.
- Each file converts in place — no upload, no queue.
- Download them one by one, or grab the whole batch as a ZIP.
How much smaller, realistically
For photographic content, expect the JPG to be somewhere between a fifth and a tenth of the PNG's size. The saving comes from JPEG discarding high-frequency detail the eye does not register, which PNG is obliged to store exactly.
For flat graphics, logos and diagrams the saving is much smaller and the result often looks worse. PNG compresses uniform colour regions extremely well, and JPEG produces visible ringing around the hard edges of text and line art. If your PNG is a screenshot containing text, converting it to JPG may make it both blurrier and barely smaller.
Transparent areas become white
Every transparent pixel has to be assigned a colour. This converter fills them with white, which suits the overwhelming majority of cases — documents, print, and upload forms all assume a white ground. A naive conversion that skips this step produces black backgrounds instead, which is why so many hastily-built converters mangle logos.
The change is permanent. If you may need the transparency later, keep the PNG as well.
When to keep the PNG
Keep PNG for anything containing text or sharp-edged graphics, anything with transparency, and anything you will edit repeatedly. Convert to JPG for photographs, for email attachments, and whenever a size limit is the binding constraint.
Frequently asked questions
How much smaller will my file get?
For photographs, typically 80 to 90 percent smaller. For screenshots and flat graphics the saving is much less, and the quality cost is much more visible.
What happens to transparency?
Transparent regions are filled with white, permanently. JPG has no way to store an alpha channel.
Is this conversion lossy?
Yes. PNG is lossless and JPG is not, so some detail is discarded. At quality 0.92 this is not visible on photographic content, but text and line art will soften noticeably.
Should I convert a screenshot to JPG?
Usually not. Screenshots contain text and hard edges, exactly the content JPEG handles worst. You will get modest size savings and visible artefacts around the lettering.
Are my files uploaded?
No. Conversion runs entirely in your browser.