PNG ToolKit  v1.0             

PNG ToolKit Professional main window


Png ToolKit Professional logo

Png ToolKit is a built-in application designed for Windows Operating System containing a set of useful, user-friendly and low-cost tools to process bitmap images. Thanks to its friendly interface and low resource consumption, it guarantees excellent results both to experienced and beginner users, even using old PCs.

Photographers, Web Designers, Graphics, and anyone uses PNG, Tiff or Jpeg images for their creative work, will appreciate the many features available in Png ToolKit, a useful toolkit that you can always keep on hand.

The application is available in two editions:

  • Free Edition
  • Professional

The Free Edition can be used free for both personal and business purpouses; the only tool available in this edition is the optimization of PNG images for web publishing.

The Professional version, complete with all features, can be used for both personal and commercial purposes. It is distributed as a Shareware (try-before-you-buy) and provides a free 14-day evaluation period, after which you will need to purchase your license to continue to use the application.

Compare Editions                   14-day free trial (Pro Edition)               download free edition

  The most important features:

  • Intuitive and user friendly multilanguage interface

  • Batch processing capability of multiple files

  • Fast and powerful images optimization for the Web

  • All the essential for images correction

  • Tools to make easier Rotation, Resize, Cropping and Cut of the images

  • Watermark tool

  • Filters and Artistic Effects

  • Slideshow creation

  • Image Editing to print or create Images Gallery, Catalogs, Photographic Archives

  • Perpetual license

  • Designed to work with Windows  XP, Vista, 7, 8, 10 (32/64 bit)

  • Low resources consumption

  • Complete User Guide

  IMAGes compatibility

File Format



JPEG Data URI(1)
PNG Data URI(1)

 system requirements

ProcessorIntel Pentium / AMD Athlon  or equivalent - 700 MHz or faster
Monitor Resolution1024 x 768 px
HDD free disk spaceAt least 70 MB for installing
Operating System                    Microsoft Windows 10, 8, 7, Vista, XP
Some application features may require more resources to be used


  • Png ToolKit - Resize tool
  • PNG ToolKit - Rotate and Flip tool
  • PNG ToolKit - Watermark tool
  • PNG ToolKit - Images Gallery tool
  • PNG ToolKit - Slideshow tool
  • PNG ToolKit - Optimize and Export tool
  • PNG ToolKit - Correction and Effects tool
  • PNG ToolKit - Correction and Effects tool
  • PNG ToolKit - MD5, SHA-1 and CRC32 Hash Codes

 compare editions




Images amount for worklist
Rotate and Flip
Crop a selected area
Texts and Images as a Watermark
Images editing to create Images Gallery, Catalogues, Photographic Archives
PNG images optimization for web publishing
Images Import Formats
TIFF, Data URI(1)
TIFF, Data URI(1)
Images Export Formats
JPEG Data URI(1),
PNG Data URI(1)
Jpeg quality comparison
Correct Brightness, Contrast, Saturation, Gamma, Color Temperature
Filter and Artistic Effects
Convert 24 bit images to 32 bit (with alpha channel)
Hash Codes creation
MD5, SHA1, CRC32
Backup of original images
Fast Data URIs( 1 ) creation
Create and save Worklists
Multilanguage User Interface( 2 )
Customize Application Settings

Worklist autostart


Strumenti di PNG ToolKit

  file resize

File Resize Options

You can change the image size by manually entering values or by using the Zoom slider to increase or decrease the percentage


For example, through the File Resize tool you can quickly create images thumbnails

  canvas resize

Canvas Resize Options

Type the new size in pixels and choose the direction to apply to increase or reduce the canvas




Crop tool

This tool allows to easily crop an image


Rotate tool

Choose relative or absolute rotation with 0.1 ° steps, set the clockwise or counterclockwise rotation, and PNG ToolKit will make the rest.

PNG ToolKit easily corrects the horizon alignment in the landscape photos



Would you like to publish your images on the Web? Are you a graphic designer or a photographer and do you have a creative work to show to your customer?

This tool allows to protect the images intellectual property applying texts and logos as a watermark; thanks to many customization options, you can get endless combinations with a few easy steps.


Watermark tool

   images  gallery

Editing tool to print or create Images Gallery, Catalogs, Photos Archives, etc.

Images Gallery



This tool creates a slideshow also adding a soundtrack; the built-in player allows to run the slideshow on any PC with Windows Operating System (XP, Vista, 7, 8, 10)

Download the Slideshow demo created through PNG ToolKit by clicking on this link:

Extract files from the zip archive and run the PngTKShow.exe player to start the slideshow.

   png  optimization

PNG Optimization

This tool optimizes* the PNG images by compressing data without loss of quality.
Images can be published on the Web by improving site performance and reducing data usage.


PNG image with  256 x 256 px (32-bit)

Before optimization:     63,1 Kbyte

After optimization:  55,5 Kbyte (reduction: 12,1%)

* PNG ToolKit uses the great OptiPNG application (version 0.7.6) to optimize the images



PNG ToolKit can simultaneously convert the images in 7 different file formats.

The Jpeg Quality Comparison allows to easily choose the best compression level suitable for your needs.

  images  CORREctION

Correction of Brightness, Contrast and Saturation

Essential tool to correct:  Brightness, Contrast, Saturation, Gamma and Color Temperature

   filters and effects

There are 19 different artistic effects to transform the images:  Sepia, Grayscale, Bitmap, Invert, Psychedelic, Emboss, etc.

Filters and Effects

   hash codes creation:  md5, sha1, crc32

Png ToolKit quickly creates (from any files type) the most common Hash Codes (MD5, SHA-1, CRC32) used for assuring integrity of the transmitted data.

Hash codes creation (MD5, SHA1 and CRC32)

   backup  restore

PNG ToolKit automatically makes a backup copy of each processed image to ensure maximum security and prevent loss of original images. From the Backup Restore tool, you can easily retrieve the original versions of your images.

This default setting of the application can be enabled or disabled on any tools window.

   Feature not available                                                     Feature available

1) Data URI:

The data URI scheme (Uniform Resource Identifier) is a way that provides to include data in-line in web pages as if they were external resources. Since 2015 the data URIs are supported by the most important browsers. This solution allows to add small images directly in the web pages encoding such images in ASCI format using the Base64 scheme that encodes binary data to text.

2) Multilanguage User Interface:

Currently available languages for both editions of PNG ToolKit are: Italian, English.