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JPG to PNG Converter

Convert JPG images to PNG online for free, with no added compression artifacts. Batch convert multiple images at once, with no sign-up or software required.

  • Free to use
  • No file stored beyond 1 hour
  • Encrypted over TLS 1.2/1.3
  • No watermarks

Drag and drop your files here or click to upload.

Maximum file size is 1GB

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How it works

Three steps to your converted file

Everything happens in your browser tab - upload, pick a format, download. The heavy lifting runs on our servers.

  1. 01

    Upload your file

    Drag and drop, click to browse, or paste a URL. Batches take up to 20 files at once - 230+ input formats across video, audio, image, document, and archive types.

  2. 02

    Choose an output format

    Pick from over a hundred output formats. Filter by category or search by name - every option is open to everyone, no account needed.

  3. 03

    Convert & download

    Hit Convert and grab your download link moments later. Originals are erased when the job completes; results are cleared within about an hour.

JPG to PNG

Why convert JPG to PNG?

JPG is a lossy format, while PNG is a lossless format. PNG can have a transparent background, JPG can't.

  • No further quality loss

    PNG is lossless, so from here on the file keeps every detail - good for editing and archiving.

  • Where PNG works best

    Logos, screenshots, graphics and images with text or transparency.

JPG vs PNG: what's the difference?

PropertyJPGPNG
TypeImageImage
CompressionLossy (smaller files, some quality loss)Lossless (no quality loss)
Transparent backgroundNoYes
AnimationNoNo
Opens inEvery browser, phone and computerEvery browser, phone and computer
Best forPhotos, sharing, email, social mediaLogos, screenshots, graphics and images with text or transparency

What is a JPG file?

Joint Photographic Experts Group

Developed By
Joint Photographic Experts Group
Initial Release
1992
MIME Type
image/jpeg

JPG is functionally identical to the JPEG format, differing only in the file extension length, a legacy constraint from the MS-DOS 8.3 filename limit (which allowed only three characters for extensions). It implements the same ISO/IEC 10918 standard, using lossy compression based on Discrete Cosine Transform (DCT) and Huffman coding to store photorealistic images. The file structure contains markers such as Start of Image (SOI) and End of Image (EOI) and supports color spaces like sRGB and CMYK, making it interchangeable with .jpeg files in all software contexts.

How to open a JPG file

As one of the most ubiquitous file types in computing, JPG files open natively on Windows, macOS, and Linux without external software. Default viewers like Microsoft Photos, Apple Preview, and Linux image viewers handle the format automatically. For editing or conversion, industry-standard tools including Adobe Photoshop, Paint.NET, and XnView provide extensive support. Web browsers universally render JPGs without plugins.

What is a PNG file?

Portable Network Graphics

Developed By
PNG Development Group
Initial Release
1996
MIME Type
image/png

Portable Network Graphics (PNG) is a raster graphics file format that supports lossless data compression, created as a patent-free replacement for the Graphics Interchange Format (GIF). Standardized as ISO/IEC 15948:2004, PNG utilizes the DEFLATE compression algorithm (a combination of LZ77 and Huffman coding) and supports palette-based images, grayscale, and full-color non-palette-based RGB/RGBA images. A defining feature is its alpha channel support, allowing for variable transparency levels, unlike the binary transparency of GIF. It does not support animation but offers gamma correction and interlacing via the Adam7 algorithm.

How to open a PNG file

PNG files possess near-universal compatibility across all major operating systems (Windows, macOS, Linux, Android, iOS) and web browsers (Chrome, Firefox, Safari) without requiring additional software. Default image viewers such as Microsoft Photos, Apple Preview, and virtually all graphics editing software including GIMP, Adobe Photoshop, and Paint.NET natively handle the format.

More tools

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Why RunConvert

The fastest way to convert any file

Purpose-built for speed, privacy, and breadth of format support.

  • Convert JPG to PNG in seconds

    Every JPG to PNG conversion runs on our servers, so your device stays fast and the output quality stays intact.

  • Fast, cloud-powered

    No queue, no waiting. Files are processed on high-performance servers and returned in seconds, even for large files.

  • Secure & private

    Encrypted in transit and never shared with anyone. Uploads are erased the moment your job completes, and results shortly after.

  • Free - no account needed

    Convert without creating an account - no credit card, no trial clock. Sign in only if you want history and higher daily limits.

Developer API

Convert JPG to PNG via API

Automate JPG to PNG conversions in three steps: create a job, upload your file, then poll for the result.

Replace YOUR_API_KEY with your RunConvert API key. Get your free API key at runconvert.com/api.

# 1. Create job
curl -X POST https://api.runconvert.com/v3/jobs \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "tag": "jpg-to-png",
    "tasks": {
      "upload-file": {
        "operation": "import/upload"
      },
      "convert": {
        "operation": "convert",
        "input": "upload-file",
        "output_format": "png"
      },
      "export-result": {
        "operation": "export/url",
        "input": "convert"
      }
    }
  }'

# 2. Upload your file (use upload_url from the response)
curl -X PUT "$UPLOAD_URL" --upload-file input.jpg

# 3. Poll for result
curl https://api.runconvert.com/v3/jobs/$JOB_ID?include=tasks \
  -H "Authorization: Bearer YOUR_API_KEY"

FAQ

Frequently asked questions

Common questions about converting JPG to PNG with RunConvert.

Upload your JPG file, select PNG as the output format, and click Convert. Your PNG downloads instantly.

PNG uses lossless compression, so it's a good choice when you need to edit, layer, or repeatedly resave an image without compounding quality loss, or when you plan to add transparency.

Converting won't restore detail lost from JPG's original compression, but the new PNG file itself won't lose any further quality during future edits or resaves.

No. JPG has no transparency information to begin with, so a converted PNG still has a solid background - you'd need a separate background-removal tool to add transparency.

PNG's lossless compression generally produces larger files than JPG's lossy compression, especially for photos - this is expected and is the trade-off for not losing any additional quality.

Yes, completely free with no account required, and you can upload multiple JPG files to convert them all to PNG in one go.

Ready to convert JPG to PNG?

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