Convert JPG to PNG
Convert JPG images to lossless PNG files in your browser. No upload, no watermark, no sign-up — and an honest explanation of what PNG can and cannot recover.
Runs entirely in your browser — nothing is uploaded
PNG will not repair your JPG
This is worth saying first, because it is the reason most people arrive here disappointed. PNG is a lossless format, which means it preserves precisely what you hand it. If your JPG already has compression artefacts — blockiness in the sky, smearing around edges — the PNG preserves those artefacts perfectly.
You end up with a file several times larger containing the same picture. Lossless means faithful, not restored. No format and no tool can rebuild detail that was thrown away when the JPG was first saved.
Three reasons it genuinely makes sense
You are about to edit it. Every time you save a JPG it is re-compressed and loses a little more. Ten rounds of editing and saving does visible damage. Converting to PNG first freezes the quality where it is, so the editing itself costs nothing further.
You need transparency. JPG cannot store it at all. To cut out a background or place the image over something else, the file has to be in a format with an alpha channel. PNG is the safe choice.
Something demands PNG. Some upload forms, design tools and printing workflows accept nothing else. The reason is often arbitrary, but the requirement is real.
Expect the file to grow, a lot
A 500 KB JPG photograph commonly becomes a 4 MB PNG. That is not a fault — it is the format doing its job. PNG stores every pixel precisely, and a photograph is millions of subtly different pixels with no repetition to exploit.
PNG is efficient for flat colour, sharp edges and line art. It is inefficient for photographs, and always will be.
The background is not transparent yet
A common expectation worth correcting: converting to PNG does not remove anything. Your white background stays white. The JPG had no transparency to carry over, so there is none to appear.
What changes is capability. From now on the file can hold transparency, so erasing the background in an image editor will actually work instead of filling with white.
Which file should you keep?
Keep whichever came first. A photo from a camera or phone is a JPG by origin, and that is your master — converting it to PNG adds size without adding anything else. PNG is the right master for things you made yourself: logos, diagrams, screenshots, illustrations.
Everything runs on your device
Files are decoded and re-encoded by your own browser, with nothing uploaded and no limit on how many you convert at once.
Frequently asked questions
Will converting to PNG improve the quality?
No, and this is the single most common misunderstanding. PNG is lossless, which means it will preserve exactly what you give it — including every compression artefact the JPG already baked in. The blockiness and smearing stay. You get a bigger file containing the same picture, not a better one.
Then why convert at all?
Three good reasons. You are about to edit the image and want no further loss with each save. You need to add transparency, which JPG cannot hold. Or a system you are uploading to accepts only PNG. Outside of those, converting a photograph to PNG usually just wastes space.
Why did my file get so much bigger?
Because PNG has to reproduce every pixel exactly and photographs contain millions of subtly different ones. A 500 KB JPG photo commonly becomes 4 MB as a PNG. That is the format working correctly, not a fault. PNG is efficient for flat colour and line art, and inefficient for photographs.
Does the PNG have a transparent background?
No. The conversion copies the picture as it is, and a JPG has no transparency to carry over. The PNG simply supports transparency from now on, which means you can erase a background in an editor without the format fighting you.
Which format should I keep long term?
Keep whichever the original was. If it started as a JPG from a camera or a phone, that is your master file and converting it to PNG adds nothing. PNG is the right master for graphics you created — logos, diagrams, screenshots.