Convert PNG to JPG
A screenshot or exported graphic saved as PNG can weigh five or ten times what it needs to, and plenty of upload forms cap attachments hard. This free converter re-encodes PNGs as compact JPGs on your own machine - no account, no queue, and no copy of your image ever sent anywhere.
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How it works
- Add one or more PNG files by dropping them on the page.
- Set the JPEG quality; 80-85 is a good balance for screenshots and photos alike.
- If your PNG has transparent areas, pick the fill colour they should become. White is the default.
- Click convert and save the JPGs, singly or as a ZIP.
Worth knowing
PNG stores every pixel losslessly, which is exactly right for the moment of capture and exactly wrong for sharing. A full-screen screenshot of a photo-heavy page can run 4-8 MB as a PNG; re-encoded as a JPEG at quality 85 the same image usually lands under 1 MB with no difference you can spot at arm's length. When a portal says "maximum 2 MB" or an email bounces for size, this conversion is almost always the fix.
The trade-off is real but narrow. JPEG compresses by discarding detail the eye is least likely to notice, and it is spectacularly good at photographs, gradients and anything camera-like. It is weakest on razor-sharp single-pixel edges - think tiny text in a screenshot - where aggressive settings can leave faint halos. Keeping quality at 80 or above avoids that for almost all content; if a screenshot is mostly small text and you need it pristine, PNG was already the right format and compressing the PNG is the better move.
One thing JPEG simply cannot represent is transparency. Any see-through region in your PNG has to become an actual colour, and this tool fills those areas with white unless you choose otherwise. That matters for logos and cut-out product shots: on a white page the result looks unchanged, but on a dark background the former transparent zone shows up as a solid box. Pick a fill that matches wherever the JPG will live.
Everything happens in your browser using the canvas encoder, so a 50-image batch converts as fast as your laptop allows and works fine on a plane. The original PNGs on your disk are never touched or altered.
JPEG has no alpha channel at all, so a transparent PNG must gain a background during conversion - this tool fills with white by default and lets you pick any colour. Many converters hard-code black, which is why logos converted elsewhere sometimes come back sitting in an ugly dark rectangle.
What this tool will not do
- It will not keep transparency - that is a limit of the JPEG format itself, not of this tool. Use WebP or keep PNG if you need see-through regions.
- It will not always produce a smaller file: a tiny flat-colour PNG (an icon, a simple chart) can actually grow as a JPG, because PNG is the better format for that content.
- It does not batch-rename output files; each JPG keeps its source name with the extension changed.
Questions people ask
How much smaller will my PNG get as a JPG?
For screenshots and photographic content, expect somewhere between 60% and 90% reduction at quality 80-85. Flat graphics with few colours shrink less, and very simple images may not shrink at all, since PNG already encodes those efficiently.
What happens to the transparent parts of my PNG?
They are filled with a solid colour, white by default, because JPEG cannot store transparency. You can choose the fill colour before converting so the result blends into whatever page or document it is headed for.
What quality setting should I use for a screenshot?
Use 85 or higher if the screenshot contains a lot of text, since JPEG artifacts show up first around sharp letterforms. For screenshots of photos, videos or dashboards, 75-80 is usually indistinguishable and much smaller.
Why does a website tell me to upload JPG when I only have PNG?
Many forms whitelist formats to keep server storage predictable, and JPEG is the safest common denominator for photos. Converting here takes seconds and the resulting file will pass any checker that inspects the actual file type rather than the name.
Is converting PNG to JPG reversible?
No. JPEG throws away fine detail permanently during encoding, and converting back to PNG later cannot recover it. Keep your original PNG if there is any chance you will need to edit the image again.
Can I convert a whole folder of PNGs at once?
Yes - drop them all in together. Each file is processed on your device in turn and you can download the complete set as one ZIP archive when it finishes.
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