JPG to PNG Lossless
Click or Drag & Drop
Supported formats: .JPG, .JPEG
How It Works
1
Upload File
Select or drag & drop your .jpg, .jpeg file into the upload box.
2
Convert
Our secure servers instantly convert your file to .png.
3
Download
Download your converted file. All files are automatically deleted for your privacy.
Frequently Asked Questions
Yes, completely safe. utool processes your files locally inside your browser using WebAssembly. Your data is never sent to our servers, logged, or stored anywhere.
utool reads the source file's raw binary data and re-encodes it using lossless algorithms. No pixel values are approximated, averaged, or discarded during conversion.
Lossless is the highest quality tier — it means zero information is lost during conversion. "High quality" may still apply gentle compression, while lossless applies none.
Usually yes. Lossless files retain all data, which produces larger file sizes than lossy-compressed formats. If file size matters, consider using the high-quality (not lossless) option.