PNG to JPG converter
Drop in PNG pictures, set the quality and the background colour for any transparent areas, and download JPG files. It all happens in your browser.
Free · no signup Runs in your browser
How do I convert a PNG to a JPG?
Add your PNG files, pick a quality (90 is a good starting point) and download the JPG. A JPG cannot hold transparency, so any see-through areas are filled with white or black, which you choose. Photographs usually get much smaller; flat graphics with sharp text can get larger or show fuzzy edges.
Why convert PNG to JPG
PNG keeps every pixel, which makes photographs large. JPG compresses them by discarding detail the eye is least likely to notice, so a photograph saved as a PNG will normally shrink a lot when converted. That is why many upload forms, email systems and web pages ask for JPG.
The catch is transparency. A PNG can have see-through pixels and a JPG cannot, so the converter paints the picture on a solid background first. White suits most logos and cut-outs; black suits light artwork. Choose the one that matches where the picture will be placed.
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 PNG 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 JPG (JPEG) with the browser's own encoder, and the result is offered as a download. A PNG file is a lossless format: it stores every pixel exactly and supports transparency; a JPG file is the most common photo format: it stores each picture as a compressed, lossy approximation of the original, with no transparency. Because JPG has no transparency, any see-through area is first filled with the background colour you choose (white by default), and the quality slider sets how much detail is traded for a smaller file. 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 PNG files: drop them on the box, press the box to choose them, or paste a picture.
- Choose the background colour and quality (JPG is lossy: 90 is a good balance, 100 is the largest and 70 is noticeably smaller).
- 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 PNG file.
What changes in the conversion
What stays the same and what does not when PNG becomes JPG.
| Aspect | What happens |
|---|---|
| Pixels and size in pixels | Kept exactly: the width and height do not change |
| File size | Often smaller for photographs; screenshots and graphics may grow |
| Quality | A small loss: JPG is lossy, so each conversion discards a little detail. Keep the original |
| Transparency | Lost: JPG has no transparency, so see-through areas are filled with your background colour |
| Animation | Not applicable: PNG 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
- Shrinking a photograph that was saved as a PNG
- Meeting a form that accepts only JPG
- Sending a screenshot by email at a smaller size
- Putting a cut-out picture on a plain white page
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 PNG file will not open or shows an error | The file is damaged, is not really PNG (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 background turned white (or the colour I chose) | JPG cannot store transparency | Choose another background colour, or convert to PNG or WebP to keep it see-through |
| The result looks softer or has fuzzy edges | JPG is lossy, and text or sharp lines show compression most | Raise the quality to 95 to 100, or use PNG for screenshots and text |
| 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
- Converting a logo or screenshot with fine text: JPG can blur sharp edges, so raise the quality or keep the PNG.
- Forgetting the background: transparent areas become white or black.
- Converting repeatedly: each JPG save loses a little more detail, so keep your PNG original.
- Setting the quality very low to save space and getting visible blocks.
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: scan.png to scan.jpg
You have scan.png and need a JPG file.
- You choosescan.png
- You getscan.jpg
- SettingQuality 90, transparent areas filled with white
The JPG is usually far smaller for a photograph, and close to the PNG in appearance.
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
What quality should I choose for JPG?
Start at 90. Lower values make smaller files with more visible compression; 70 to 80 is often fine for photographs on the web.
What happens to transparent areas?
A JPG cannot store transparency, so they are filled with the background colour you choose, white or black.
Why did my file get bigger?
Flat graphics with large areas of one colour compress very well as PNG, so a JPG of the same picture can be larger. Keep the PNG in that case.
Is anything uploaded?
No. The conversion runs in your browser on your own device.
Can I convert several PNG files together?
Yes. Drop in as many as you like and download them one by one or with Download all.
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
JPG to PNG
Convert JPG pictures to PNG 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 compressor
Make pictures smaller by setting a size limit or a quality.
Open toolSVG to PNG
Turn an SVG file or pasted SVG code into a PNG at the width you choose, with a transparent or coloured background.
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