PNG to JPG converter
PNG screenshots get large fast, and upload forms have opinions about that. Converting to JPG usually cuts the size by most of it, right here on your device.
The size limit that sent you here
Almost everyone doing this conversion has hit a size limit. A full-screen grab on a modern display is easily 5 to 8 MB as a PNG, and job application forms, government portals and email attachments routinely cap out below that.
The size difference is not a small optimisation. The same screenshot as a JPG is often under a tenth of the size, because JPG is allowed to approximate and PNG is not.
The one case where this is the wrong move is a screenshot full of small text. JPG compression works by discarding fine detail, and small text is fine detail — which is worth understanding rather than just avoiding.
Why the text is the first thing to go
JPG does not store a picture as pixels. It cuts the image into 8×8 squares and describes each square as a stack of wave patterns — a flat tone, then progressively finer ripples — and then throws away the finest ones, which is where all the savings come from. On a photograph this is close to free, because photographs have very little in them that is genuinely fine and sharp.
A screenshot is the opposite kind of picture. Its content is black text on white, one-pixel borders, and large areas of perfectly flat colour. Reconstructing a hard black-to-white step out of smooth waves needs the fine ones, and when they are dropped the step comes back with a faint ripple beside it. That is the grey shimmer you see around small text in a compressed screenshot, and it is why the same conversion that is invisible on a holiday photo is obvious on a spreadsheet.
This page writes JPG at a fixed quality of 90 out of 100, which is high — body text and interface labels survive it, and 8-point text, code at a small zoom level, and thin coloured lines on a coloured background are where it starts to show. It is a deliberately conservative setting, because the failure people mind is unreadable text, not a file that is only eight times smaller instead of fifteen.
Which means this page is the wrong tool if you have an exact number to hit — 2 MB for an upload form, 500 KB for a forum avatar. A fixed quality lands where it lands. The image compressor takes the ceiling you type, walks the quality down only as far as it has to in order to get under it, and tells you outright when it cannot rather than handing you a wrecked picture.
Shrinking a screenshot by converting it
- JPG is already selected above.
- Drop your PNG images in, or click to browse.
- Download the result. It never left your device.
If the screenshot has to stay perfectly readable, compare it at 100 percent zoom before you send it, not zoomed out.
The three things that change
- Transparency is lost. PNG can store a transparent background and JPG cannot, so those areas are filled with white. On a screenshot this rarely matters; on a logo it ruins it.
- Sharp edges get slightly fuzzy. Look closely at text and thin lines and you will find faint smudging around them. This is inherent to JPG, not a setting.
- The file gets dramatically smaller, which is the whole point of the conversion.
Screenshot questions
Will my screenshot still be readable?
Body text and interface labels survive fine. Very small text, code at a low zoom level, and thin coloured lines on a coloured background are where it starts to show. If someone has to read the text carefully, keep it a PNG and shrink it another way.
How much smaller will it get?
For a typical screenshot, somewhere between five and fifteen times smaller. Photographs saved as PNG shrink even more dramatically.
Can I choose the quality, or a target size?
Not here — this page converts at a fixed quality of 90. The image compressor is where you type a size in MB and have the quality walked down until the file fits under it.
What if my PNG has a transparent background?
It comes out white. If you need the transparency kept, convert to WebP instead, which is both small and able to store it.
Nothing is uploaded
It runs on your device. Turn the network off mid-conversion and it still finishes — or check any converter yourself.
Free, and no account
No signup, no watermark, no upgrade prompt. No size cap beyond your own device, and up to 50 pictures a go.
If JPG turns out to be the wrong trade
- PNG to WebP Smaller than PNG, and transparency still survives.
- HEIC to JPG The iPhone photo that Windows refuses to open.
- WebP to JPG The image you saved from a website that nothing will open.
- AVIF to JPG The newest web format, turned into the one everything reads.
Or open the image converter to pick any combination, and the image compressor when the problem is size rather than format.