Was ist PNG? Vollständige Anleitung zum PNG-Format

Erfahren Sie alles über das PNG-Format - verlustfreie Kompression, Unterstützung von Transparenz und wann man PNG gegenüber JPG oder WebP verwenden sollte.

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PNG

Was ist PNG? Vollständige Anleitung zum PNG-Format

PNG (Portable Network Graphics) ist ein verlustfreies Bildformat, das Transparenz unterstützt und sich ideal für Grafiken, Logos und Webbilder eignet, die scharfe Kanten und pixelgenaue Qualität erfordern.

Zuletzt aktualisiert:

Year1996
TypeVerlustfrei
UsageTop 3

What is it?

PNG (Portable Network Graphics) ist ein verlustfreies Rasterbildformat, das 1996 als offene Alternative zum patentierten GIF-Format geschaffen wurde. Im Gegensatz zu JPG verwirft PNG während der Kompression niemals Bilddaten und bewahrt jeden Pixel genau so, wie er aufgenommen wurde.

PNG unterstützt vollständige Alpha-Kanal-Transparenz, was bedeutet, dass Pixel vollständig transparent, vollständig undurchsichtig oder in jedem dazwischenliegenden Grad sein können. Dies macht es zur Standardwahl für Logos, Icons, UI-Elemente und jedes Bild, das einen transparenten Hintergrund benötigt.

Technical Specifications

DeveloperPNG Development Group
File Extension.png
MIME Typeimage/png
CompressionLossless (DEFLATE)
Color DepthUp to 48-bit
TransparencyFull alpha channel

Pros & Cons

Advantages

Verlustfreie Qualität

Every pixel is preserved exactly - no quality loss on repeated saves.

Transparenzunterstützung

Full alpha channel allows transparent and semi-transparent backgrounds.

Scharfer Text und Kanten

Perfect for screenshots, UI elements, logos, and text-heavy graphics.

Breite Kompatibilität

Supported by every browser, image editor, and operating system.

Disadvantages

Große Dateigrößen

Significantly larger than JPG for photographic content - not ideal for photos.

Keine Animation

Static format only. Use APNG or GIF for animated images.

Keine EXIF standardmäßig

Limited metadata support compared to JPG or TIFF.

Langsame Ladezeiten bei großen Größen

High-resolution PNG files can slow down web page loading.

When to Use It

PNG glänzt, wenn Bildqualität und Transparenz wichtiger sind als die Dateigröße.

Logos und Branding

Transparent backgrounds make PNG the go-to format for logos used on varied backgrounds.

Screenshots

Captures screen content with perfect sharpness - no compression artifacts.

UI und Icons

Interface elements, buttons, and icons require pixel precision that only lossless formats deliver.

Grafiken mit Text

Charts, infographics, and annotated images stay crisp and readable.

How to open a PNG file

PNG files are widely used for their lossless compression and support for transparency, making them popular among graphic designers, web developers, and photographers. Software for handling PNG files can be categorized into professional tools, free/open-source applications, browser-based editors, and built-in operating system utilities. Professional tools are suited for users needing advanced editing capabilities, while free/open-source options are ideal for those on a budget. Browser-based tools offer convenience and accessibility, and built-in utilities provide quick viewing and basic editing without additional installations.

When choosing software for PNG specifically, several factors come into play, including feature fidelity, whether the focus is on editing or viewing, and the cost model. Users should consider the platform compatibility, as some applications are exclusive to certain operating systems. Additionally, understanding export needs is crucial, as some tools may limit output formats, while others may offer extensive conversion options. In cases where editing is not required, lightweight viewers may suffice, while more complex tasks may necessitate robust editing software.

Adobe Photoshop 2023

Windows, macOSSubscription

Adobe Photoshop is a leading professional image editing software that provides extensive capabilities for working with PNG files. It allows users to edit, create, and manipulate PNG images with high fidelity, supporting layers, transparency, and various color modes.

Hauptfunktionen
  • Full layer and mask editing
  • Advanced color correction tools
  • Support for transparency and alpha channels
  • Extensive filter and effect options
  • Batch processing for multiple PNGs
Stärken
  • Industry-standard for professional editing
  • Comprehensive toolset for image manipulation
  • Regular updates with new features
Einschränkungen
  • Subscription model can be expensive
  • Steep learning curve for beginners

Exportiert nach: PNG, JPG, TIFF, PSD, PDF

Am besten für: Choose Adobe Photoshop for professional-grade PNG editing and extensive feature sets.

Besuchen Adobe Photoshop →

GIMP 2.10.34

Windows, macOS, LinuxFree (GPL)

GIMP is a powerful open-source image editor that provides a robust set of tools for working with PNG files. It supports advanced editing features, including layers and masks, making it suitable for both casual users and professionals.

Hauptfunktionen
  • Layer and mask support
  • Customizable brushes and tools
  • Advanced selection tools
  • Scripting support for automation
  • Wide range of plugins available
Stärken
  • Completely free and open-source
  • Highly customizable interface
  • Active community for support
Einschränkungen
  • User interface can be confusing
  • Performance may lag on large files

Exportiert nach: PNG, JPG, TIFF, GIF, BMP

Am besten für: GIMP is ideal for users seeking a free, feature-rich alternative to Photoshop for PNG editing.

Besuchen GIMP →

Paint.NET 5.0

WindowsFree / Paid

Paint.NET is a user-friendly image editing software that offers essential features for working with PNG files. It provides a balance between simplicity and functionality, making it suitable for users who need basic editing capabilities without the complexity of professional tools.

Hauptfunktionen
  • Layer support and blending modes
  • Basic image adjustment tools
  • Simple user interface for quick edits
  • Support for plugins to extend functionality
  • Undo history for easy corrections
Stärken
  • Lightweight and fast performance
  • Intuitive interface for beginners
  • Free with optional paid features
Einschränkungen
  • Limited advanced editing features
  • Windows-only platform

Exportiert nach: PNG, JPG, BMP, TIFF, GIF

Am besten für: Paint.NET is perfect for casual users needing straightforward PNG editing without a steep learning curve.

Besuchen Paint.NET →

Photopea 2023

All (browser)Free / Paid

Photopea is a web-based image editor that mimics the functionality of Photoshop, allowing users to work with PNG files directly in their browser. It supports layers, masks, and a variety of editing tools, making it a versatile option for users on any platform.

Hauptfunktionen
  • Layer and mask editing
  • Supports PSD and other formats
  • Advanced selection and transformation tools
  • Real-time collaboration features
  • No installation required
Stärken
  • Accessible from any device with a browser
  • No installation needed, instant access
  • Free to use with optional premium features
Einschränkungen
  • Dependent on internet connection
  • Performance may vary with browser

Exportiert nach: PNG, JPG, PSD, GIF, SVG

Am besten für: Photopea is ideal for users needing a powerful, browser-based PNG editor without installation hassles.

Besuchen Photopea →

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Quellen

  1. PNG Specification (Third Edition) - W3C
  2. PNG image type - MDN Web Docs
  3. RFC 2083: PNG (Portable Network Graphics) Specification Version 1.0 - IETF
  4. Portable Network Graphics - Library of Congress
  5. Portable Network Graphics - Wikipedia