JPG to PNG converter
Convert JPG and JPEG images into lossless PNG format right in your browser tab. Perfect for graphic editors, image layering, or platforms that require PNG format. Decoding and re-encoding run entirely on your computer through HTML5 Canvas, ensuring complete privacy with zero server uploads. Convert single photos or batch process multiple files and download them individually or bundled in a ZIP archive.
100% Client-Side ConversionLossless PNG decoding and encoding in HTML5 Canvas. No server upload.
Drag and drop JPG / JPEG images here
Select one or multiple JPG files to convert to PNG
Example
Converting camera JPEG to PNG format
A camera JPEG photo is converted to lossless 24-bit PNG format for editing in a raster design application without re-compressing lossy JPEG blocks.
Related: HEIC converter, Image compressor, WebP converter, PNG to JPG converter
FAQ
- Does this tool upload my JPG files to any server?
- No. All image processing happens 100% on your device in the browser tab using HTML5 Canvas. No files are uploaded to any server or cloud service.
- Will converting a JPG to PNG improve its image quality?
- No. PNG is a lossless format, so it perfectly preserves whatever pixel data was in the JPG without introducing further compression artifacts, but it cannot restore detail lost during original JPEG compression.
- Why does the converted PNG file sometimes have a larger file size than the JPG?
- JPEG uses lossy discrete cosine transform compression optimized for photographs, discarding high-frequency visual details that humans barely perceive. PNG uses lossless Deflate compression, which stores all pixel data exactly, resulting in larger file sizes for photographs.
- Can I convert multiple JPG files in a single batch?
- Yes. Drop or select multiple JPG/JPEG files at once. You can download each converted PNG separately or click 'Download All (ZIP)' to download everything together.
- What image formats are accepted by this converter?
- You can upload standard JPEG files with extensions .jpg or .jpeg, as well as .jfif images. All standard JPEG color formats are supported.
- How do I convert JPG to PNG programmatically without a server?
- In the browser, load the JPG into an Image object, draw it to an HTMLCanvasElement context, and call canvas.toBlob(blob => ..., 'image/png'). In Node.js or Python, use libraries like Sharp or Pillow.