Convert PNG to JPG
Photographic PNGs are needlessly enormous. Converting to JPG typically removes 80–95% of the file size with no visible difference — and you choose what happens to any transparency.
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Choose ImageYou can also paste an image with Ctrl+V
Images are processed on your device and never uploaded.
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Runs on your device — nothing is uploaded.
Working…
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- Original
- Result
- Saved
- Quality
How to convert PNG to JPG
- Select your PNG files.
- If any transparency is detected, pick a background colour — white, black or a custom value.
- Choose a quality level and press Convert.
- Download individually or as a ZIP.
The transparency question
JPEG has no alpha channel — the format simply cannot represent a transparent pixel. Something must go behind your image, so the tool asks rather than guessing:
- White — the safe default; matches most documents and pages.
- Black — for dark interfaces and presentations.
- Custom — match the exact background of wherever the image lands.
The choice is irreversible, so if you might need the cut-out again later, keep the PNG as well. Transparency is never silently destroyed here.
How much smaller will it be?
| Source | Typical PNG | As JPG (quality 85) |
|---|---|---|
| 12 MP photograph | 18 MB | 1.4 MB |
| Full-page screenshot | 2.4 MB | 420 KB |
| Flat logo | 48 KB | 96 KB — larger |
Note the last row. For flat-colour graphics, PNG genuinely wins and converting makes things worse while adding artefacts around the edges. Convert photographs, keep logos as PNG.
Common reasons to convert
- An upload form rejects PNG or has a size limit the PNG cannot meet.
- A print service requires JPEG.
- Page weight — a PNG photo hero is one of the most common causes of a poor LCP score.
- Email attachments that would otherwise bounce.
Frequently asked questions
Are my images uploaded to your server?
No. The image is decoded, processed and re-encoded by your own browser using the Canvas and Web Worker APIs. There is no upload endpoint for this tool — open your browser's network panel while you use it and you will see no request carrying image data.
What happens to my transparent background?
It is filled with the colour you choose before encoding. Nothing is removed without asking, and the tool tells you when transparency is detected.
Will my screenshot's text get blurry?
At quality 85 or above, barely. Below that, JPEG ringing shows around sharp letterforms. For screenshots that are mostly text, PNG with palette reduction is the better compressor.
What happens to my file when I close the tab?
It is gone. The image only ever exists in your browser's memory as an object URL; closing or refreshing the page discards it. Nothing is written to our servers, and nothing is stored on your device unless you download the result.