PNG Compressor

This free online PNG compressor converts your lossless PNGs or high quality JPEGs into lossy PNGs with the smallest filesize possible.

  1. Select a file

    For best results use high quality source material that hasn't been compressed before.

  2. Drag & Drop

    Drag your image file onto this website. You can do this anytime.

  3. Paste image URL

    Paste an image URL from your clipboard into this website. You can do this also on the image processing page.

  4. Paste Base64 Data URI

    Paste a Base64 Data URI from your clipboard into this website. You can do this also on the image processing page.

  5. Paste image data

    Paste an image from your clipboard into this website. You can do this also on the image processing page.

  6. Use this Photoshop JSX-Script

    Use the script to send an image from Photoshop to compress-or-die.
    Copy it to the Photoshop Scripts folder. Overwrite what’s there if you’re asked.
    Windows: C:\Program Files\Adobe\Photoshop CS...\Presets\Scripts
    Mac OS X: Applications/Photoshop CS.../Presets/Scripts
    Restart Photoshop.

Allowed file formats: JPEG, PNG, GIF, WebP, SVG (max. 8 MiB)

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Features

  • State-Of-The-Art PNG compression algorithm
  • 8 bit and 24 bit PNG output
  • Fuzzy whitespace trimming
  • Lossless auto-rotation based on EXIF meta data (on JPEG input)
  • Selective Blur preprocessing
  • Clean color space conversion from CMYK
  • Converts to standard color profile sRGB-IEC61966-2.1
  • Gamma correction to 2.2
  • Compression view
  • For the technical enthusiats: Uses imagemagick, pngquant, zopflipng, posterize, exiftran, puppeteer and a lot of custom code.

ArticleThe big image compression tool comparison

There are a lot of articles about online image compression tools in the net, most of them are very superficial. Usually they end with a simple: "It generates smaller pictures, so it's got to be better."

Learn why such statements are most of the time meaningless, understand the technical background, and find out which tool you should use as of today.

18 min read

Read article

News

Thanks to your images sent to me for review, I was now able to solve the problem of many GIFs. A large part of the GIFs sent in were ... cut off. The end of the file was simply missing. I now discarded the last invalid frame of the file and added an end marker, making ... [1/2]

2021-08-2505Bielefeld, Germany