JPG to PNG converter
Drop in one or more JPG pictures and download them as PNG files. The conversion happens in your browser, so nothing is uploaded.
Free · no signup Runs in your browser
What does converting a JPG to a PNG do?
It re-saves the picture as a lossless PNG. The pixels you see now are kept exactly, so you stop losing quality each time you edit and save, but the detail the JPG already threw away does not come back. Expect a bigger file: a PNG of a photograph is usually several times the size of the JPG it came from.
Why convert JPG to PNG
A JPG is saved with lossy compression, which discards fine detail to make the file small, and every time you open, edit and save it again it loses a little more. A PNG stores the pixels without that loss. Converting before you start editing gives you a working copy that will not degrade, which is useful for screenshots, logos with text and anything you will touch up more than once.
PNG also supports transparent areas, which JPG does not. This tool does not make a background transparent for you, because a JPG has no transparency to keep, but the PNG it produces can be opened in an editor where you cut out the background and keep the see-through result.
It runs in your browser. Your pictures are never uploaded, and there is no account to make.
How the conversion works in detail
Your browser does the work. When you add a JPG file, the page reads it with the browser's File API (the file is not uploaded), asks the browser to decode it into raw pixels, and draws those pixels on a canvas of the same size. The canvas is then saved as PNG with the browser's own encoder, and the result is offered as a download. A JPG file is the most common photo format: it stores each picture as a compressed, lossy approximation of the original, with no transparency; a PNG file is a lossless format: it stores every pixel exactly and supports transparency. PNG is lossless, so the pixels are written exactly as they were decoded and there is no quality setting. Everything is processed one picture at a time, in your browser's memory, which is why several pictures at once work well but pictures over about 100 megapixels are refused.
How to convert, step by step
- Add your JPG files: drop them on the box, press the box to choose them, or paste a picture.
- Nothing else to set: PNG is saved exactly as decoded.
- Wait a moment: each picture shows its new size and how much smaller or larger the file became.
- Press Download next to one picture, or Download all to save every converted file in turn.
- Open a converted file to check it before you delete the original JPG file.
What changes in the conversion
What stays the same and what does not when JPG becomes PNG.
| Aspect | What happens |
|---|---|
| Pixels and size in pixels | Kept exactly: the width and height do not change |
| File size | Usually much larger: PNG stores every pixel, while JPG compresses photographs far better |
| Quality | No further loss: PNG is lossless, but any loss already in the JPG stays |
| Transparency | Not applicable: JPG has no transparency |
| Animation | Not applicable: JPG is a single picture |
| Camera details, date and GPS location | Removed. A canvas holds only pixels, so the new file carries none of the original's metadata, which also helps privacy |
| Orientation | Applied: a photo that was rotated by a camera setting is turned upright in the new file |
| Colours | Converted to the standard sRGB range. Pictures with a wider colour range (some AVIF, HEIC and WebP files) may look a touch less saturated |
When to use it
- Making a lossless working copy before several rounds of edits
- Uploading to a site or form that only accepts PNG
- Keeping text and line art crisp in a screenshot saved as JPG
- Preparing a picture for an editor where you will remove the background
Problems you may run into
Most problems come from the formats involved, not from the tool.
| What you see | Likely cause | What to do |
|---|---|---|
| A JPG file will not open or shows an error | The file is damaged, is not really JPG (it was only renamed), or your browser cannot decode it | Open the file in another program to check it, or try Chrome, Edge or Firefox |
| The PNG is much bigger than the JPG | JPG compresses photographs far better than PNG does | That is expected. Use PNG for editing and transparency, and JPG or WebP for sharing photos |
| Colours look a little different | The picture was converted to the standard sRGB range | Compare at full size; for colour-critical work convert in a colour-managed editor |
| The camera date or GPS location is gone | Metadata is not copied, by design | Keep the original if you need it, or write the details in the file name |
| 'Too large to process' | The picture is above about 100 megapixels | Reduce it first with the image resizer |
| Several downloads are blocked | The browser asks before saving many files at once | Allow multiple downloads for this site, or download the pictures one by one |
Mistakes it helps you avoid
- Expecting the picture to look better: the detail a JPG discarded cannot be restored.
- Expecting a smaller file: PNG files of photographs are larger.
- Expecting a transparent background: a JPG has none to keep.
- Using PNG for photographs on a web page, where WebP or JPG load faster.
How the conversion works
Four steps, all inside your browser.
1. The file you choose is read by your browser. It is not sent to a server.2. The picture is decoded to pixels and drawn on a canvas the same size as the original.3. The browser's encoder saves the canvas in the new format, at the quality you set for JPG and WebP.4. The new file is offered as a download. Metadata such as camera details and location is not carried over.
Browsers decode the picture to pixels and re-encode a canvas with the format and quality you choose (MDN: HTMLCanvasElement.toBlob). Because the picture is redrawn, camera details and location data are not copied to the new file, and an animated picture keeps only its first frame. Very large pictures (over about 100 megapixels) are refused, since many phones cannot hold them in memory.
Example: photo.jpg to photo.png
You have photo.jpg and need a PNG file.
- You choosephoto.jpg
- You getphoto.png
- SettingPNG has no quality setting; the pixels are kept as they are
The PNG is usually much larger than the JPG, because it stores every pixel without loss.
Sizes depend on the picture, so this tool shows the before and after size for each file instead of promising a percentage.
Terms on this page
- Lossy
- A format that discards some detail to make the file smaller, such as JPG.
- Lossless
- A format that stores the pixels without losing detail, such as PNG.
Common questions
Does converting JPG to PNG improve quality?
No. The PNG keeps what the JPG shows, but it cannot restore detail that JPG compression removed. What you gain is that further edits will not lose more.
Why is my PNG bigger than my JPG?
JPG discards detail to save space and PNG does not, so a PNG of a photograph is normally larger.
Can I convert many JPG files at once?
Yes. Choose or drop several pictures and download each result, or use Download all.
Is my picture uploaded?
No. Your browser reads and converts the file on your own device, and nothing is sent over the network.
Will the camera information be kept?
No. The picture is redrawn and saved fresh, so details such as camera model and location data are not copied into the PNG.
Where these numbers come from
- MDN Web Docs — HTMLCanvasElement.toBlob() How a browser encodes a canvas as PNG, JPEG or WebP, and what the quality argument does.
- MDN Web Docs — Using files from web applications How a page reads a file you choose without uploading it.
- MDN Web Docs — Image file type and format guide Which formats are lossy or lossless, which support transparency, and where they are best used.
Last verified 2026-10-25 The method on this page is checked against the sources above at least once a year. Spotted something out of date? Tell us and we will fix it.
Related tools
PNG to JPG
Convert PNG pictures to JPG in your browser. Many files at once, nothing uploaded.
Open toolWebP to JPG
Convert WebP pictures to JPG in your browser. Many files at once, nothing uploaded.
Open toolWebP to PNG
Convert WebP pictures to PNG in your browser. Many files at once, nothing uploaded.
Open toolJPG to WebP
Convert JPG pictures to WebP in your browser. Many files at once, nothing uploaded.
Open toolImage resizer
Change a picture's size in pixels by width, height, percentage or exact size. Many files at once, nothing uploaded.
Open toolHEIC to JPG
Convert iPhone HEIC photos to JPG or PNG in your browser. Many at once, with nothing uploaded.
Open toolGIF to PNG
Convert GIF pictures to PNG in your browser. Many files at once, nothing uploaded.
Open toolBMP to JPG
Convert BMP pictures to JPG in your browser. Many files at once, nothing uploaded.
Open tool🖼️ Image tools
Convert between JPG, PNG and WebP, shrink a picture to a size limit, resize it or turn pictures into a PDF. Your files never leave your device.
See all 30 tools in this section