Convert JPG to PNG
Convert JPG to PNG when the image is about to be edited, annotated, or needs a transparent background added.
Drop your JPG files here
or click to browse · paste with Ctrl+V · files never leave your device
Nothing queued yet. Add as many files as you like — everything runs on your own device.
Nothing is uploaded
Conversion runs in your browser. Your files never touch a server, so there is no copy of them to leak.
No sign-up, no watermark
No account, no email, no daily limit, and nothing stamped across your image.
Batch and folders
Drop a hundred files at once and download the results as a single ZIP.
Works offline
Once this page has loaded you can disconnect entirely and it still works.
Converting JPG to PNG does not improve an image — that is the most useful thing to know before you start. PNG is lossless, so it will store the JPG exactly as it is, compression artefacts and all, in a substantially larger file. What it does is stop the damage accumulating from here on.
That is genuinely worth doing in three situations: the image is about to be edited and re-saved repeatedly, something in the pipeline demands PNG, or you need to add transparency. Every save of a JPG re-compresses the whole image, so an annotated screenshot that has been through four rounds of edits looks visibly worse than the original. Convert once to PNG and every subsequent save is exact.
The conversion runs in your browser, so nothing is uploaded and there is no file limit.
How to convert JPG to PNG
- Add your JPG files. Drag them onto the box above, click to browse, or paste an image straight from your clipboard. You can add as many at once as you like.
- Adjust the settings if you need to. The defaults suit most images. PNG is lossless, so there is no quality setting to adjust.
- Download the PNG file. Each file gets its own download button as soon as it finishes, and you can pull the whole batch down as a single ZIP.
What changes when you convert JPG to PNG
Every format conversion involves trade-offs, and vague tools hide them. Here is exactly what happens to your image in this particular conversion.
- PNG is lossless, so nothing further is lost — but it also cannot restore detail that JPG already threw away. Expect the PNG file to be considerably larger than the original despite containing the same visible image.
This will not give your image a transparent background
This is the most common misunderstanding about the conversion, and it is worth being blunt about. PNG is capable of storing transparency; converting to PNG does not create any. Your JPG has no transparent pixels — JPG cannot store them — so the PNG that comes out is fully opaque, exactly as the JPG was.
What the conversion does is give you a format that can hold transparency, so you can then erase a background in an image editor and have it stay erased. Removing the background itself is a separate job requiring a tool that decides which pixels to cut, which this converter deliberately does not attempt.
Expect the file to get considerably bigger
A photograph converted from JPG to PNG typically grows five to ten times. This surprises people who reasonably assume that a "better" format should be more efficient, but the two formats are solving different problems. JPG throws away information the eye will not miss; PNG throws away nothing and compresses what remains.
Worse, PNG compresses photographs poorly by design — its algorithm is tuned for flat colour and repeated patterns, and photographic noise is neither. If the resulting file is impractically large, and you only need lossless output rather than PNG specifically, WebP in lossless mode is usually a good deal smaller.
What happens to the file size
Measured, not estimated: two 1200 x 800 pixels references — a photograph and a flat-colour graphic — put through this converter.
| Reference image | As JPG | As PNG | Change |
|---|---|---|---|
| Photograph | 211 KB | 2.16 MB | +946% |
| Graphic with text | 21 KB | 121 KB | +470% |
Yours will differ: size depends more on what is in the picture than on the formats involved.
About JPEG (Joint Photographic Experts Group)
JPG is the lossy photographic format that has been the default for digital cameras and the web since 1992.
Where you probably got it: Photos from cameras, phones, and almost any website.
Strengths
- Opens in literally every image viewer, editor, printer and web form ever made
- Very small files for photographs, with a quality dial you control
- Hardware-accelerated decoding on every phone and camera
Limitations
- No transparency — transparent areas have to be flattened onto a solid colour
- Lossy: each re-save discards a little more detail permanently
- Blocky artefacts around sharp edges, text and flat colour
About PNG (Portable Network Graphics)
PNG is the lossless format of choice for screenshots, logos and any image that needs a transparent background.
Support: Universal across browsers, operating systems and design software.
Strengths
- Completely lossless — pixels survive unlimited re-saves untouched
- Full 8-bit alpha transparency, including soft edges and drop shadows
- Perfect for text, screenshots, line art and flat colour
Limitations
- Much larger than JPG or WebP for photographs
- No animation (APNG exists but is patchily supported)
- No quality dial — you cannot trade detail for size
Is it safe to convert JPG online?
Here, yes — and you can check rather than trust. Open your browser’s developer tools, switch to the Network tab and convert a JPG file: no request carrying your image is made. Disconnect from the internet after this page has loaded and the converter still works, which would be impossible if a server were doing the conversion.
That is worth verifying wherever you convert, because most online converters do upload, and JPG files are so often scans of passports, driving licences and signed forms, which is most of what gets converted to send somewhere. Once a file is on somebody else’s server you are relying on a privacy policy rather than on anything you can observe. We wrote up how to tell a safe converter from a risky one in more detail.
Frequently asked questions
Does converting JPG to PNG improve the quality?
No. Nothing can restore detail that JPG has already discarded — the information is gone from the file. PNG preserves the image exactly as it currently is, including any visible compression artefacts, which is valuable going forward but changes nothing about what you already have.
Will this remove the background from my photo?
No. Converting to PNG gives you a format that supports transparency, but it does not add any: the output is as opaque as the input. You need a background-removal tool for that, and then PNG is the right format to save the result in.
How do I convert JPG to PNG?
Drag your JPG file onto the box above, or click it to browse. The conversion starts immediately in your browser and the PNG download appears within a second or two for most images. You can drop in a whole folder of files at once and download them together as a ZIP.
Are my JPG files uploaded to a server?
No. The conversion happens locally in your browser, so your files are never transmitted anywhere — the tool even works with the network disconnected once the page has loaded. That is also why there is no file size or file count limit: nothing costs us anything per conversion. The practical ceiling is your own device's memory, which on a phone means very large images may fail.
What is the difference between JPG and PNG?
JPG is the lossy photographic format that has been the default for digital cameras and the web since 1992. PNG is the lossless format of choice for screenshots, logos and any image that needs a transparent background. In practice the choice comes down to compatibility: universal. If a program can open an image at all, it can open a JPG. Meanwhile universal across browsers, operating systems and design software.