JPG and PNG are the two most common image formats, and while they look similar at a glance they are built for different things. Converting from JPG to PNG takes seconds with a free online tool — but it is worth knowing when the conversion actually helps and when it does not, so you can make the right choice for your particular use case.
How to convert JPG to PNG for free
The fastest way is to use Filero's JPG to PNG converter. It runs entirely in your browser — no file is uploaded to any server.
- Open the JPG to PNG tool.
- Click "Upload JPG" or drag your image onto the page. You can convert multiple files at once.
- The conversion happens instantly in your browser.
- Download your PNG file.
The process is lossless from the point of conversion — the PNG output is an exact pixel-for-pixel copy of your JPG. No quality is lost in the JPG-to-PNG step itself, though any compression artefacts already present in the source JPG will remain.
JPG vs PNG: what is the difference?
Understanding the difference helps you decide which format to use:
- JPG uses lossy compression. It is excellent for photographs and images with gradients because it produces small file sizes. However, each time you save a JPG, some quality is lost permanently. JPG does not support transparency — every pixel has a fully opaque background.
- PNG uses lossless compression. File sizes are larger, but the image quality is preserved exactly across saves. PNG supports transparency (an alpha channel), making it the standard format for logos, icons, screenshots, and any image that needs a transparent background.
When should you convert JPG to PNG?
Convert JPG to PNG when:
- You need to edit and re-save the image multiple times. Each save in JPG format degrades quality slightly. Switching to PNG means subsequent saves are lossless, so the image stays crisp no matter how many times you edit it.
- The image needs to be placed on a coloured background. PNG supports transparency, so logos and product images can be placed over any background without a white box around them.
- You are using the image in a design or document where quality is critical. Screenshots, UI mockups, and technical diagrams all look sharper in PNG because there is no compression artefacting.
- A platform or tool specifically requires PNG. Many apps, design platforms, and APIs only accept PNG for certain types of uploads.
When JPG is still the better choice
PNG is not always superior. For photographs and images with complex colour gradients, JPG produces dramatically smaller files — a high-quality photograph that is 800 KB as a JPG might be 6 MB as a PNG. For web use where page load speed matters, and for images that will not be edited again, JPG is usually the right format. Converting a photograph from JPG to PNG does not improve its quality — it just makes the file much larger.
Can you add transparency when converting JPG to PNG?
Not automatically — a JPG has no transparency information to carry over. When you convert a JPG to PNG, you get a PNG with the same fully opaque pixels as the original JPG. To remove a background and make it transparent, you need a background removal tool after the conversion step. Once you have a PNG, you can open it in an image editor and delete or replace the background.
How to convert JPG to PNG on iPhone or Mac
On a Mac, you can convert JPG to PNG without any additional software. Open the JPG in Preview, then go to File → Export and choose PNG from the format dropdown. On iPhone, the Files app and Photos app do not natively convert formats, but any image conversion website works in Safari — the browser-based approach is the easiest option.
Frequently asked questions
Does converting JPG to PNG improve image quality?
No. Converting to PNG prevents any further quality loss from future saves, but it cannot recover detail already lost by the original JPG compression. The PNG will be a lossless copy of whatever the JPG currently looks like.
Why is my PNG file larger than the original JPG?
This is normal. PNG uses lossless compression, which stores more image information than JPG's lossy compression. A photograph that is 500 KB as a JPG might be 3 to 8 MB as a PNG. For photographs, the larger PNG file size is rarely worth it unless you need lossless editing.
Can I convert multiple JPGs to PNG at once?
Yes. Filero's JPG to PNG tool accepts multiple files in a single upload. Each image is converted independently and you can download them all. For very large batches, a desktop tool like ImageMagick or XnConvert may be faster.
Ready to try it?
Use Filero's free JPG to PNG tool. No account needed, works on any device.
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