Paint.NET image - Revision history

Sembiance: /* Specifications */

2026-02-13T13:23:53Z

‎Specifications

Sembiance: /* Software */

2026-02-13T13:22:50Z

‎Software

Sembiance: sample files

2024-12-14T01:27:17Z

sample files

Pinata: fixing binaryformatter security guide url

2023-11-12T15:48:36Z

fixing binaryformatter security guide url

Pinata: adding info from the format quote unquote specifications

2023-11-12T14:55:21Z

adding info from the format quote unquote specifications

PaulWise: lazpaint can open these http://alanhorkan.livejournal.com/61645.html

2015-05-16T08:08:31Z

lazpaint can open these http://alanhorkan.livejournal.com/61645.html

Dan Tobias: /* Software */

2014-07-27T02:53:30Z

‎Software

Jsummers: Created page with "{{FormatInfo |formattype=electronic |subcat=Graphics |extensions={{ext|pdn}} }} '''Paint.NET image''' (or '''PDN''') is the native graphics file format of the Paint.NET image ..."

2013-06-13T21:02:46Z

Created page with "{{FormatInfo |formattype=electronic |subcat=Graphics |extensions={{ext|pdn}} }} '''Paint.NET image''' (or '''PDN''') is the native graphics file format of the Paint.NET image ..."

New page

{{FormatInfo
|formattype=electronic
|subcat=Graphics
|extensions={{ext|pdn}}
}}
'''Paint.NET image''' (or '''PDN''') is the native graphics file format of the Paint.NET image editor for Microsoft Windows.

== Identification ==
Files begin with a signature: the ASCII characters "<code>PDN3</code>".

== Software ==
* [http://www.getpaint.net/ Paint.NET]

== Links ==
* [[Wikipedia:Paint.NET|Wikipedia: Paint.NET]]

@@ Line 20: / Line 20: @@
 * [https://github.com/rivy/OpenPDN/blob/cca476b0df2a2f70996e6b9486ec45327631568c/src/Data/Document.cs Source code for the Document class in C#]
 * [https://web.archive.org/web/20051230140736/http://blogs.msdn.com:80/rickbrew/archive/2005/01/18/355571.aspx Information on the first version of the PDN format]
 == Software ==

@@ Line 25: / Line 25: @@
 * [http://wiki.freepascal.org/LazPaint Lazpaint]
 * [https://www.irfanview.com/ IrfanView]
 == Sample files ==

@@ Line 25: / Line 25: @@
 * [http://wiki.freepascal.org/LazPaint Lazpaint]
 * [https://www.irfanview.com/ IrfanView]
 == Links ==
 * [[Wikipedia:Paint.NET|Wikipedia: Paint.NET]]

@@ Line 7: / Line 7: @@
 == Format ==
-A PDN file mainly consists of .NET serialized data, which reflects the <code>Document</code> class in Paint.NET's C# code. Because of this, parsing a PDN file requires either parsing the .NET binary format, or if you're in a .NET environment, simply including some of the Paint.NET .dll files in your project and letting .NET do the rest (although [https://learn.microsoft.com/en-us/dotnet/api/system.runtime.serialization.formatters.binary.binaryformatter Microsoft advises against it]).
+A PDN file mainly consists of .NET serialized data, which reflects the <code>Document</code> class in Paint.NET's C# code. Because of this, parsing a PDN file requires either parsing the .NET binary format, or if you're in a .NET environment, simply including some of the Paint.NET .dll files in your project and letting .NET do the rest (although [https://docs.microsoft.com/en-us/dotnet/standard/serialization/binaryformatter-security-guide Microsoft advises against it]).
 There seems to be two versions of the PDN format; the older one simply compresses the .NET data through [[Gzip]]. The current one features its own file format signature, the ASCII characters "<code>PDN3</code>", as well as some metadata (width, height, thumbnail) in [[XML]] format, prefixed with its length as a little-endian 24-bit integer. The .NET serialized data can still be compressed, but it's now optional, denoted by the {{magic|0x1F 0x8B}} prefix for Gzip compression, or {{magic|0x00 0x01}} for uncompressed.

@@ Line 5: / Line 5: @@
 }}
 '''Paint.NET image''' (or '''PDN''') is the native graphics file format of the Paint.NET image editor for Microsoft Windows.
 == Identification ==
-Files begin with a signature: the ASCII characters "<code>PDN3</code>".
+Files begin with a signature: the ASCII characters "<code>PDN3</code>". The older version of the PDN format starts with the [[Gzip]] signature bytes, {{magic|0x1F 0x8B}}.
 == Software ==
 * [http://www.getpaint.net/ Paint.NET official site] (which, confusingly enough, isn't actually at '''paint.net''' itself, which belongs to an actual paint company!)
 * [http://wiki.freepascal.org/LazPaint Lazpaint]
 == Links ==
 * [[Wikipedia:Paint.NET|Wikipedia: Paint.NET]]