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Convert JPG to lossless PNG
Convert JPG photos into lossless PNG files ready for editing, processed on your device in batches.
For the best results: PNG is lossless, so the conversion keeps every pixel, but it cannot restore detail JPG already discarded. Expect larger files; that is the format working as intended.
Advanced settingsoptional, defaults work well
Processed entirely in your browser, your photos are never uploaded, logged, or stored.
What is JPG to PNG?
JPG to PNG is a free file converter that converts JPG photos into lossless PNG files ready for editing, processed entirely on your device. Each image is decoded and re-encoded by your own browser's graphics engine, so your photos are never uploaded to a server. There is no queue, no watermark, and no account to create, and it keeps working with your connection off.
- ✦Runs entirely in your browser. Nothing you enter is ever uploaded
- ✦No account, no sign-up, and no data leaves your device
- ✦Works offline once the page has loaded
See it in action
A print shop asks for PNG files, and the client sent JPGs.
What you drop in
Three JPG photos chosen together
What you get
Three PNGs at identical pixel dimensions. From this point on, edits and re-saves lose nothing further.
Tip: Converting JPG to PNG stops future quality loss but cannot restore detail the original JPG compression already discarded. Expect larger files: lossless storage of a photo simply takes more bytes.
Use cases
What people use it for
Convert a JPG product photo to PNG before retouching so repeated saves stop degrading it
Turn a JPG logo scan into a PNG that design software accepts for transparency work
Prepare JPG holiday photos as PNGs for a print shop that only takes lossless files
Who uses JPG to PNG?
Freelance photo retoucher
Converts client JPGs to PNG before editing so every intermediate save stays pixel-perfect through the workflow
Small business owner
Turns supplier product shots into PNGs their website builder accepts without another round of quality loss
University student
Prepares JPG figures as lossless PNGs for a thesis where publishers require non-degrading image formats
How it works
- 1Choose your files. They open in your browser, not on a server.
- 2Your device converts, compresses, or resizes them locally, with no upload.
- 3The converted files download straight back; nothing is kept anywhere.
Tips for the best results
- Convert to PNG before editing, not after, so every save in your editor stays lossless
- Expect the PNG to be noticeably larger than the JPG; that is normal for lossless storage
- For web publishing, convert your finished PNG onward to WebP to claw the size back
- Screenshots and text-heavy images benefit most from PNG; casual photos rarely need it
- Keep the original JPG too, in case you ever need the smaller file for email
FAQ
Frequently asked questions
Does converting JPG to PNG improve the quality of my photo?
No, and it is worth understanding why. JPG is a lossy format: when the photo was first saved, fine detail was permanently discarded to shrink the file. Converting to PNG stops any further loss from future edits and saves, but it cannot recover detail that was thrown away before the file reached this tool. Think of it as freezing the current quality, not restoring the original.
Why is the PNG so much bigger than the JPG I started with?
PNG uses lossless compression, meaning every pixel is stored exactly. JPG achieves its small sizes by approximating areas of similar color, which suits photographs but discards information. When the same photo is re-encoded losslessly, all that approximated detail has to be written out in full, so a several hundred kilobyte JPG can easily become a multi-megabyte PNG. That trade is the whole point of the format.
Is my photo uploaded anywhere during the conversion?
It never leaves your computer. The re-encoding is handled by your browser's own image engine, on your device, so the photo does not travel across the internet at any point. There is no server on the other end receiving files, no queue, and no storage. You could disconnect from the network after the page loads and the converter would carry on working exactly the same.
When should I actually use PNG instead of JPG?
Use PNG when you plan to edit an image repeatedly, need transparency, or are working with graphics that contain sharp edges such as text, logos, or screenshots, where JPG compression creates visible fuzz. Stick with JPG for photographs that will simply be viewed or shared, because the size savings are enormous and the quality difference is rarely visible in a finished photo.
Can I convert several JPGs in one session?
Yes, convert as many as you need, one after another. Because the work runs on your own machine rather than a metered server, there is no daily cap, no file limit to purchase around, and no account required. Each conversion takes roughly as long as your device needs to decode and re-encode the pixels, which for typical photos is a moment or two.
How do I convert JPG to PNG without losing quality?
Use a lossless converter such as this one: it decodes the JPG once and writes every pixel into the PNG unchanged, so nothing further is lost. Keep in mind the JPG format already discarded some detail when the photo was originally saved, and no converter can bring that back.
Is it safe to convert JPG to PNG online?
It depends on where the work happens. Many converter sites upload your photo to their servers, which matters for private or client images. Here the conversion runs inside your own browser tab, so the file is never transmitted, logged, or held anywhere beyond your device. Nothing to intercept, nothing to delete later.
Does JPG or PNG have transparency?
Only PNG supports transparency. JPG has no alpha channel at all, which is why transparent logos saved as JPG end up on a white or black background. Converting a JPG to PNG gives you a format that can hold transparency, though you still need an editor to actually erase the background afterwards.
Are there any usage limits?
None. Everything is generated locally in your browser, so there is no server cost, no metering, and no daily cap, use it as many times as you like, completely free.
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