PNG to JPG Converter
Convert PNG images to JPG format to reduce file size. Perfect for photos and images you want to share or upload online.
Drag & drop your PNG file here
or click to browse · Max 10 MB
Why PNG Photos Are So Large in the First Place
PNG compresses losslessly using DEFLATE — the same algorithm behind ZIP. It works by finding repetition: runs of identical pixels, patterns it has seen before. A screenshot of a settings menu is mostly flat colour, so PNG crushes it. A photograph of a beach is a field of subtly different pixels with almost no exact repetition, so there is very little for DEFLATE to find.
That is why the same holiday photo can be 8 MB as a PNG and 900 KB as a JPG with no visible difference. JPG does something fundamentally different: it converts the image into frequency information and discards the high-frequency detail your eye is least sensitive to. For continuous-tone photography that trade is close to free.
The rule of thumb that follows is simple. If the image came from a camera, JPG is almost always the right container. If it came from a design tool or a screenshot, converting to JPG will make it both larger-looking and worse.
Transparency Becomes a Solid Background
JPG has no alpha channel, so any transparent area has to be filled with something before the file can be written. This converter fills it with white. If your PNG is a logo intended to sit on a coloured background, the result will be a logo in a white box — and there is no way to undo it afterwards, because the transparency information is gone from the file. For logos and icons, stay on PNG or use WebP, which keeps transparency and is still small.
When JPG Is the Right Choice
The deciding factor is what the image contains, not where it is going.
- ✓Photographs, including anything from a phone or camera
- ✓Large images slowing down a web page or email
- ✓Uploads to portals that reject PNG or cap file size
- ✓Print submissions and photo-printing services
- ✓Any image with no transparency and no fine text
- ✕Logos, icons and anything with a transparent background
- ✕Screenshots — JPG smears text edges noticeably
- ✕Line art, charts and diagrams with hard colour boundaries
- ✕Master copies you plan to keep editing and re-saving
- ✕Images with large areas of flat, solid colour
Real Size Savings by Image Type
Identical source images exported at 85% JPG quality. Notice how the benefit collapses for flat graphics — the case where you should not be converting anyway.
The screenshot barely shrinks and picks up visible fringing around text. That is the clearest signal that a file should stay in PNG.
Generation Loss: Why You Should Convert Once
JPG re-encodes the image every time it is saved, and each pass discards a little more detail. Converting a PNG to JPG once is fine. Opening that JPG, cropping it, saving it, sending it to someone who edits and saves it again, and repeating — that is generation loss, and it accumulates into visible blockiness and colour banding.
The practical habit is to keep the PNG (or the original camera file) as your master, and treat JPG as an export format you regenerate from the master whenever you need it. Never edit a JPG repeatedly in place if you can avoid it.
How to Convert PNG to JPG
- 1.Upload your PNG. Drag it onto the uploader above or click to browse.
- 2.Convert to JPG. Any transparent areas are flattened onto a white background, since JPG cannot store an alpha channel.
- 3.Download. Keep your original PNG as the master copy — re-saving JPGs repeatedly degrades them.
Frequently Asked Questions
Will converting PNG to JPG reduce quality?
JPG uses lossy compression, so some quality will be reduced. However, at high quality settings the difference is barely noticeable to the human eye, and the file size savings are significant.
What happens to PNG transparency when converting to JPG?
JPG does not support transparency. Any transparent areas in your PNG will be replaced with a white background in the converted JPG.
How much smaller will the JPG be compared to the PNG?
Typically 50–80% smaller, depending on the image content and quality setting used. Photos compress much more efficiently than graphics with flat colors.
Why did my logo end up with a white box around it?
JPG has no transparency support, so the transparent area had to be filled with a solid colour before the file could be written — white, in this case. The transparency cannot be restored from the JPG afterwards. For logos and icons, keep the PNG, or convert to WebP instead, which preserves the alpha channel while still producing small files.
My screenshot barely got smaller. Is that normal?
Yes, and it is a sign you should not convert it. PNG already compresses flat colour and repeated patterns extremely well, so a screenshot is close to its minimum size. JPG has little left to remove, and what it does remove shows up as fringing around text. Screenshots belong in PNG.
Does converting to JPG change the image dimensions?
No. The pixel dimensions stay exactly the same — only the way those pixels are stored changes. If you also need the image to be physically smaller, resize it first and then convert; doing both compounds the file size savings.
Is my PNG file stored on your servers?
No. Your image is processed immediately and deleted from our servers. We never store or share your files.