JPG to PNG Converter Online
Move a JPG into a lossless container so that further edits stop compounding compression damage.
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JPG, PNG, WebP, BMP · Multiple files supported
How to Convert JPG to PNG?
Nothing is uploaded. The jpg file is decoded and re-encoded as png inside this tab.
Add your JPG files
Drag them in or use Choose Files. Batches are fine.
PNG is already selected
PNG is lossless, so the quality slider does nothing here. Every pixel the JPG decoder produced is carried across exactly.
Convert and download
Everything runs locally, so the png file saves straight to your device.
Why Convert JPG to PNG?
PNG uses lossless compression, every pixel is preserved exactly. Convert JPG to PNG when you need to edit the image further without quality loss, or when the destination requires a format with transparency support.
About JPG
JPG (JPEG) is the most common photo format. It uses lossy compression to keep file sizes small, making it ideal for photographs and social media. It does not support transparency.
About PNG
PNG (Portable Network Graphics) uses lossless compression, no pixel data is lost. It supports full alpha transparency, making it the go-to format for logos, UI assets, icons, and any image that needs a transparent background.
What Happens to Transparency
JPG has no alpha channel, so there is no transparency to recover. The PNG you get back is fully opaque. If you need a transparent background you have to erase it in an image editor first, no converter can invent transparency that was never in the file.
File Size: What to Expect
Expect the PNG to be larger, usually 3 to 5 times the size of the JPG. PNG stores photographic detail losslessly, and photographs are the worst case for lossless compression. A 400 KB JPG photo commonly lands between 1.5 MB and 2.5 MB once it is a PNG.
When Not to Convert JPG to PNG
Do not convert JPG to PNG hoping to improve quality. JPG compression artifacts are already baked into the pixel data. PNG will preserve those artifacts perfectly rather than remove them, and hand you a much larger file for the privilege.
How the Conversion Works
The JPG is decoded to raw RGB pixels, then re-encoded through PNG's DEFLATE filter chain. Every pixel the JPG decoder produced is written out exactly, which is why the result is lossless from this point forward while still carrying the original JPG's artifacts.
Other JPG and PNG Conversions
Every pairing runs on the same browser-based converter.
Need a pairing that is not listed? The full image converter covers every combination of JPG, PNG, WebP and BMP.
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Frequently Asked Questions
Common questions about converting JPG to PNG online.
Why convert JPG to PNG?
PNG uses lossless compression, every pixel is preserved exactly. Convert JPG to PNG when you need to edit the image further without quality loss, or when the destination requires a format with transparency support.
What happens to transparency when converting JPG to PNG?
JPG has no alpha channel, so there is no transparency to recover. The PNG you get back is fully opaque. If you need a transparent background you have to erase it in an image editor first, no converter can invent transparency that was never in the file.
How much will the file size change?
Expect the PNG to be larger, usually 3 to 5 times the size of the JPG. PNG stores photographic detail losslessly, and photographs are the worst case for lossless compression. A 400 KB JPG photo commonly lands between 1.5 MB and 2.5 MB once it is a PNG.
When should I not convert JPG to PNG?
Do not convert JPG to PNG hoping to improve quality. JPG compression artifacts are already baked into the pixel data. PNG will preserve those artifacts perfectly rather than remove them, and hand you a much larger file for the privilege.
Will converting JPG to PNG remove compression artifacts?
No. The artifacts are part of the decoded pixel data by the time any converter sees them. PNG stores them losslessly. The only real fix is to re-export from the original uncompressed source.
Why is my PNG bigger than the JPG it came from?
That is expected and correct. JPG discards detail to stay small, PNG keeps every pixel. For photographic content a PNG is typically 3 to 5 times larger.
Are my JPG images uploaded to a server?
No. The conversion runs entirely in your browser. Your JPG files never leave your device and are never sent anywhere.