JPG to PNG
Convert JPG photos to lossless PNG images — one at a time or in bulk.
Drop your JPG images hereChoose files to get started
Convert one image or a whole batch · up to 50MB on the free tier.
Processed in your browser — files never leave your device
How to Convert JPG to PNG
JPG is the most common image format on the planet — it's what cameras, phones, and most websites produce. But JPG uses lossy compression, which discards detail every time the file is saved, and it can't be edited without slowly degrading. PNG is lossless: once an image is PNG, it can be edited, cropped, and re-saved as often as you like without losing a single pixel. PDFDoco converts JPG files to PNG instantly in your browser, in batches, with nothing uploaded to a server.
- 1
Add your JPG images
Drop in one photo or a whole folder's worth — batch conversion is built in.
- 2
Review the batch
See thumbnails and file sizes, remove anything you don't need, or add more.
- 3
Convert to PNG
Each image is redrawn pixel-for-pixel and saved in lossless PNG format.
- 4
Download
One image downloads directly; several arrive together in a single ZIP file.
Batch conversion
Convert dozens of images at once with a live progress bar.
Instant and lossless
No re-compression: the PNG holds exactly the pixels of your JPG.
Private by design
Images are converted on your device and never uploaded.
Why convert JPG to PNG?
The main reason is editing. Every time a JPG is opened, changed, and saved again, its compression runs again and throws away a little more detail, producing blocky artifacts around edges and text. Converting to PNG first locks in the current quality, so you can annotate screenshots, add labels to diagrams, or retouch photos repeatedly without the image getting worse. PNG is also the preferred format for many design tools, slide decks, and documentation systems.
Does converting improve quality?
It's worth being clear: converting JPG to PNG preserves the image exactly as it is, but it can't restore detail that JPG compression already removed. Think of it as freezing the quality in place rather than enhancing it. That's also why PNG files are usually larger than the JPG they came from — PNG stores every pixel faithfully instead of approximating them.
Preparing images for transparency
JPG has no transparency at all — every pixel is solid. PNG supports a full alpha channel, so converting is the first step if you want to remove a background, cut out a logo, or create a sticker. Convert your JPG to PNG here, then open it in your favorite editor to erase the background; the transparent areas will be preserved when you save.
Best uses for each format
Use JPG for photographs you'll only share or view, where small file sizes matter most. Use PNG for screenshots, user-interface mockups, diagrams, charts, logos, and any image with sharp edges or text, as well as for images you'll keep editing. If you later need a smaller file for the web, you can always convert back with our PNG to JPG tool.
Pro tip: photos straight from a phone are often several megabytes as JPG and can triple in size as PNG. Convert only the images you plan to edit, and keep the originals for sharing.
Frequently Asked Questions
Will converting JPG to PNG reduce quality?
No. The conversion is lossless — the PNG contains exactly the same pixels as your JPG. It cannot, however, undo compression artifacts that were already in the JPG.
Why is my PNG bigger than the original JPG?
JPG uses lossy compression that approximates the image to save space, while PNG stores every pixel exactly. Photos in particular become noticeably larger as PNG; graphics with flat colors grow much less.
Can I convert many images at once?
Yes. Add as many JPG files as you like — they're converted in one batch and downloaded together as a ZIP file, or you can save each one individually.
Does the PNG have a transparent background?
The PNG keeps the solid background from your JPG, because JPG has no transparency to carry over. You can remove the background afterwards in an image editor and the PNG will preserve it.
Are my photos uploaded anywhere?
No. Conversion happens entirely in your browser using the Canvas API. Your images never leave your device.
Is the photo's orientation preserved?
Yes. Phone photos that rely on an orientation tag are drawn upright before conversion, so the PNG displays the same way the original did.