gif

.gif — Graphics Interchange Format

CompuServe · 1987

開発者

CompuServe

カテゴリ

画像

MIMEタイプ

image/gif

初回リリース

1987

オープンフォーマット

はい

ファイルシグネチャ

47 49 46 38 (GIF8)

.gifファイルとは？

GIF (Graphics Interchange Format) is a bitmap image format famous for its support of animations and transparency. Created by CompuServe in 1987, GIF uses lossless LZW compression but is limited to 256 colors per frame. This makes it ideal for simple animations, icons, and graphics with flat colors, but poor for photographs. GIF animations have become a cultural phenomenon on social media, messaging apps, and meme culture.

.gifファイルを開くプログラム

プラットフォーム	プログラム
Windows	Windows Photos	無料
	Adobe Photoshop	有料
	GIMP	無料
macOS	Preview	無料
	Adobe Photoshop	有料

.gifファイルのよくある問題

⚠️ Cannot open .gif file

Install one of the recommended programs listed above. For a free option, try the first free program in the list.

⚠️ .gif file is corrupted

Try re-downloading the file. If the file was transferred, ensure the transfer completed without errors.

よくある質問

What program opens .gif files?▼

.gif files can be opened with several programs. Windows Photos is one of the most popular choices.

Is .gif a safe file format?▼

Generally yes, .gif files are safe to open with appropriate software.

Can I convert .gif to another format?▼

Yes, there are many online and offline tools available to convert .gif files. Check the conversion section above for specific methods.

技術詳細

Graphics Interchange Format files use the image/gif MIME type and were first introduced in 1987 by CompuServe. The file can be identified by its signature: 47 49 46 38 (GIF8).

豆知識

Graphics Interchange Format was first released in 1987 by CompuServe

セキュリティ情報

.gif files are generally safe to open. However, always ensure your software is up to date to protect against potential vulnerabilities.