JPG to PNG converter
Turn JPG pictures into PNG, many at once, on your own device.
or drop them here. It stays on your device: nothing is uploaded.
How to convert JPG to PNG
- 1Choose your filesPress Choose images, or drop JPG files on the box: up to 30 at a time, from a phone or a computer.
- 2Check the settingsPNG is chosen on this page. You can switch to JPG, PNG, WEBP or PDF, and set the quality; the files are done again at once.
- 3DownloadEach file has its own Download button, and Download all saves them in one ZIP.
What is a JPG file?
JPG (also written JPEG) is the most common photo format. Its files are small because it leaves out detail the eye barely sees, and it cannot have a transparent background.
Why PNG?
A PNG keeps every pixel exactly, so it loses no more detail however often it is edited and saved, and it keeps transparency. Print-on-demand suppliers such as Printful ask for PNG print files for that reason.
Nothing is uploaded
Converters that upload your photos keep a copy on someone else’s server, at least for a while. This one does the work in your browser, on your own device, so private photos stay private. The pictures are also saved fresh, so the camera details and GPS position phones write into every photo are not copied into the new files.
Printing the photo
A 12 MP iPhone photo (4032 × 3024 pixels) prints sharp up to about 13 × 10 inches at 300 DPI, and about twice that as a poster seen from a step back. The print size calculator works it out for any picture. Then put it on a poster or a mug.
Read more on the blog
- Best DPI and Upscaling Settings for Midjourney and AI T-Shirt Prints
- How to Fix White Halos Around Transparent PNGs on Dark Hoodies
Questions people ask
How do I convert JPG to PNG?
Choose or drop your JPG files above. Each is converted on your device as soon as it is added. Download them one at a time, or all at once as a ZIP.
What is a JPG file?
JPG (also written JPEG) is the most common photo format. Its files are small because it leaves out detail the eye barely sees, and it cannot have a transparent background.
Does converting a JPG to PNG improve it, or make it transparent?
No. The PNG loses nothing more when it is edited and saved again, but it cannot bring back detail the JPG already lost, and its background stays as it is. To make the background transparent, use the background remover.
Will the PNG be larger than the original?
Usually, yes. PNG keeps every pixel without loss, so a photo can come out three to five times larger than as a JPG or WEBP. Nothing is lost on the way to PNG, and a transparent background stays transparent.
Are my files uploaded?
No. The converter runs in your browser: files are opened and saved on your own device and never sent to SlapMake or anyone else.
How many files can I convert at once?
Up to 30 at a time, each up to 50 MB and 100 megapixels. Camera data and GPS position are not copied into the new files. A picture larger than a phone browser can hold is made as large as it allows, and the page says so.
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