Convert JPG images into lossless PNG, right in your browser. Nothing is uploaded.
JPG is the standard format for photographs, small and universally supported, but it is lossy and cannot hold transparency. Sometimes you need the opposite, a lossless PNG that will not degrade further when you edit and re-save it, or a file a particular program or platform insists on. Converting JPG to PNG gives you that lossless container, so from that point on the image stops accumulating compression damage.
To use it, load one JPG or several and each is re-saved as a PNG you can download, leaving your originals in place. The PNG will look identical to the JPG you started from, because conversion does not invent detail, it just stores the existing pixels without further loss. That makes it a clean base for editing.
It is important to be realistic about what this does and does not achieve. PNG is lossless, but it cannot undo the compression the JPG already applied, so any softness or blocky artifacts baked into the JPG remain. What you gain is that future saves will not add more loss, plus PNG's support for transparency if you later cut out a background. The cost is a larger file, since PNG does not compress photos nearly as tightly.
Choose PNG when you plan to edit the image repeatedly, when a tool or upload requires PNG, or when you will add transparency. Stick with JPG when the image is a finished photo you just want to share, because the PNG will be much heavier for no visible gain. Match the format to whether you value losslessness or a small size.
Common uses include preparing a JPG for a design program as a lossless working copy, meeting a platform that only accepts PNG, creating a base to erase a background from, and archiving an image where you want no further compression.
Everything runs locally in your browser through the device's encoder, so no image is uploaded. There is no account and no cost, and the only real limit is your device's memory, which matters only for very large files. Your pictures stay entirely on your own machine.
No, PNG cannot restore detail that JPG already discarded, so the picture looks the same, not sharper. What you gain is a lossless file that will not degrade further on future saves. Think of it as freezing the current quality, not upgrading it.
JPG compresses photographs very efficiently, while PNG stores them losslessly, which takes far more space for detailed images. The larger size is simply the cost of keeping every pixel exactly. If small size matters, keep the JPG.
Not automatically, because a JPG has no transparency to carry over, so the PNG starts as a solid image. PNG supports transparency, so you can erase a background afterwards in an editor. The format allows it even though the source did not use it.
It is worth it when you will edit and re-save the image several times, when a tool or site requires PNG, or when you plan to add transparency. For a finished photo you only want to share, PNG offers no visible benefit and a bigger file. Decide based on your next step.
Yes, load several at once and download each PNG. Because PNGs are large and the work is local, big batches use more memory and may run slower on older devices. Most computers handle a large set fine.
No, any blockiness or softness already in the JPG stays in the PNG, because it is part of the pixels being stored. PNG just prevents new loss going forward. To avoid artifacts entirely, you would need the original uncompressed source.
Polished Pixels. All tools. About. Contact. Every tool runs in your browser and your files are never uploaded.