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Webseitenerweiterungen - erklärt von Semalt Expert

Zuerst definieren wir, was ein Dateityp ist. Es ist eine bestimmte Spezifikation (eine von vielen), die die tatsächliche Struktur einer Datei beschreibt. Gemäß dieser Struktur wird die Datei gespeichert, von Programmen verarbeitet und angezeigt. Der sichtbare Teil des Dateityps für einen Benutzer ist die Dateierweiterung.

Die Dateierweiterung ist eine bestimmte Zeichenfolge (Buchstaben und Ziffern), die dem Dateinamen nach dem Punktsymbol "." und verwendet, um einen Dateityp nach Programmen und Benutzern zu identifizieren. Wenn die Person oder das Programm die Erweiterung der Datei sieht, versteht sie, welche Art von Daten in einer bestimmten Datei gespeichert sind, welche Funktionen sie hat und was notwendig ist, um sie auszuführen.

Es ist anzumerken, dass Dateierweiterungen normalerweise für eine bestimmte Datei charakteristisch sind, nicht für Dateien, die zu einer Gruppe gehören. Zum Beispiel haben nicht alle Bilder die gleiche Erweiterung.

.html und .htm

HTML ist eine Standard-Hypertext-Auszeichnungssprache für Dokumente, die Webseiten bilden. In HTML geschriebene Dateien haben normalerweise eine selbstbetitelte Erweiterung.

.htm ist eine Dateierweiterung, die manchmal für HTML-Dateien verwendet wird.

Der Unterschied zwischen .html und .htm besteht nur in einem fehlenden Buchstaben in einer Dateierweiterung. Früher wurde es durch die Notwendigkeit diktiert, die Anzahl der Buchstaben in der Dateiendung zu begrenzen: altes OS konnte nur drei Symbole lesen. Heute gibt es keinen wirklichen Unterschied.

..php

Eine Datei mit der Erweiterung .php ist eine Textdatei mit einem Code der Skriptsprache PHP (Personal Home Page Tools). PHP-Sprache wird häufig zur Entwicklung von Web-Anwendungen und Webseiten verwendet. Basierend auf php-Dateien erstellt der Webserver dynamische Webseiten. Also, PHP-Datei ist ein Programm mit PHP geschrieben und .php ist seine Erweiterung.

Web Bilder

Eine große Popularität für Web-Grafiken erhalten zwei Formate mit Erweiterungen mit dem gleichen Namen - GIF und JPEG. Ihre Multifunktionalität, Vielseitigkeit, geringe Anzahl von Quelldateien mit ausreichender Qualität für eine Webseite machten sie zu einem Standard für Web-Bilder. Es gibt auch ein PNG-Format, das auch von Browsern beim Hinzufügen von Bildern unterstützt wird. Die Beliebtheit von PNG ist jedoch viel schlechter als bei GIF- und JPEG-Formaten.

GIF (Graphics Interchange Format) ist ein Format von Grafikdateien, die häufig zum Erstellen von Websites und zum Posten auf Webseiten verwendet werden. GIF verwendet 8-Bit-Farbe und komprimiert effektiv ganze Farbbereiche, während die Details eines Bildes beibehalten werden. GIF unterstützt eine Frame-für-Frame-Änderung von Bildern, wodurch dieses Format zum Erstellen von Bannern und einfachen Animationen beliebt ist.

JPEG (Joint Photographic Experts Group) ist ein weiteres beliebtes Format für Web-Bilder. JPEG unterstützt 24-Bit-Farben und behält die Helligkeit und Farbschattierungen von Fotos unverändert bei. Dieses Format wird hauptsächlich für Fotos verwendet. JPEG-Format kann .jpeg und .jpg Erweiterungen haben - wie bei .html und .htm, der ganze Unterschied ist in einem fehlenden Buchstaben.

PNG (Portable Network Graphics) ist ähnlich wie GIF. Laut den Entwicklern verwendet PNG ein verbessertes Format für die Datenkomprimierung.

Zum Schluss, in den meisten Fällen .gif-Dateien sind Animationen und Bilder, die starke Komprimierung und geringe Größe erfordern, .jpg und .jpeg sind Fotos und .png-Dateien sind der Rest.

Max Bell
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Max Bell
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Max Bell
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Max Bell
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Max Bell
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Max Bell
Dylan, thank you for your feedback. Boosting knowledge and sharing expertise is at the heart of what we aim to achieve. If you have any further questions or specific aspects you'd like to explore in the realm of website extensions or web development, please feel free to reach out. Semalt is here to support you in expanding your knowledge. Thank you for your support!

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