Skip to content
Plaintools

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

JPG to PNG converter 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.

JPG to PNG converter how-to

  1. Stay on this page. JPG to PNG converter runs in the tab.
  2. Enter or drop your input here. The file or text is not posted to a server.
  3. Copy or download the result when it appears.

Related tools

Convert

HEIC converter

Convert iPhone HEIC/HEIF photos to JPEG or PNG in the browser.

Convert

Image compressor

Compress JPEG, PNG, and WebP images with adjustable quality, scaling, and live file size preview.

Convert

WebP converter

Convert PNG, JPG, and GIF images to WebP, or convert WebP to PNG/JPG in your browser using canvas. Files never leave your device.

Convert

PNG to JPG converter

Convert PNG images to JPG/JPEG in your browser using canvas. Quality slider, background color for transparency, zero server upload.

People also use

Convert

GIF compressor

Compress animated and static GIFs in your browser by downscaling dimensions, quantizing colors, and dropping frames.

Convert

PDF to JPG converter

Convert PDF pages into high-resolution JPG images client-side. Download single pages or a multi-page ZIP.

Convert

Video compressor

Compress and shrink MP4, MOV, and WebM videos client-side using WebAssembly. Files never leave your device.

Convert

Picture to text converter

Extract text from images using optical character recognition (OCR) client-side with Tesseract.js. Files never leave your device.

JPG to PNG 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.