How do I convert ICO to GIF?

Upload your ICO file above. It is converted to GIF automatically (change the output format or quality in the Settings tab if you need to), then click Download. There is nothing to install.

Does converting ICO to GIF lose quality?

GIFはフレームあたり256色に制限されるため、写真では色のディテールが失われます。色数の少ないグラフィックはきれいに変換されます。

Will the GIF keep the transparent background?

Partly. GIF keeps transparency as on or off per pixel, so soft edges and shadows become hard-edged.

ICOファイルとは？

An ICO file bundles one picture at several sizes, from 16 to 256 pixels, so browsers and Windows can pick the sharpest version for a tab, bookmark or desktop shortcut.

Is the ICO to GIF converter free?

Yes. Convert, preview and download a single result without creating an account. Premium adds batch conversion (many files into one ZIP) and larger uploads.

Convert ICO to GIF — GIFs for Chat, Email and Web

Convert ICO to GIF online for a simple GIF for chat, email and the web. No software to install. Preview one free or batch-convert with Premium.

Drop your ICO file or click to browse

Why convert ICO to GIF?

GIF is supported far more widely than ICO, so the file is easier to open, share and upload.
GIF is made for short animations, stickers and flat-color graphics.

What to expect when converting ICO to GIF

GIF transparency is on or off per pixel, so soft edges and shadows become hard-edged.
GIFはフレームあたり最大256色しか表示できないため、写真やグラデーションにはディザリングがかかり、バンディングが出ることがあります。

ICOとGIFの比較

機能	ICO	GIF
氏名	Windowsアイコン	Graphics Interchange Format
由来	Created by Microsoft for Windows icons	Introduced by CompuServe in 1987
圧縮	Lossless images at several sizes	可逆圧縮だが、256色まで
透過	Yes — smooth, partial transparency	オン/オフのみ（透明色は1色）
アニメーション	いいえ	はい
色	透過対応のフルカラー	フレームあたり最大256色
開けるアプリ	Browsers (as favicon.ico), Windows and icon editors	All browsers, email apps and messaging apps
こんな方に最適	website favicons and Windows app or shortcut icons	短いアニメーション、ステッカー、ベタ塗りのグラフィック
主な欠点	icons are square and at most 256 × 256 pixels	256色のみ、透過はオン/オフのみ

In short: choose ICO for website favicons and Windows app or shortcut icons; choose GIF for short animations, stickers and flat-color graphics.

Frequently asked questions

How do I convert ICO to GIF?: Upload your ICO file above. It is converted to GIF automatically (change the output format or quality in the Settings tab if you need to), then click Download. There is nothing to install.
Does converting ICO to GIF lose quality?: GIFはフレームあたり256色に制限されるため、写真では色のディテールが失われます。色数の少ないグラフィックはきれいに変換されます。
Will the GIF keep the transparent background?: Partly. GIF keeps transparency as on or off per pixel, so soft edges and shadows become hard-edged.
ICO or GIF: which should I use?: Use ICO for website favicons and Windows app or shortcut icons. Use GIF for short animations, stickers and flat-color graphics. Keep in mind the main drawback of GIF: only 256 colors and on/off transparency.
ICOファイルとは？: An ICO file bundles one picture at several sizes, from 16 to 256 pixels, so browsers and Windows can pick the sharpest version for a tab, bookmark or desktop shortcut.
Is the ICO to GIF converter free?: Yes. Convert, preview and download a single result without creating an account. Premium adds batch conversion (many files into one ZIP) and larger uploads.

ICOからGIFへでできること

始める前に、主な機能を確認してください。

Convert ICO files to GIF online
Keep animation when the source is an animated GIF or WebP
Switch to any other output format in Settings
Batch-convert many ICO files into one ZIP
Preview the result before you download

このツールを使用する

設定リファレンス

ICOからGIFへで使用可能なコントロール。

設定

出力形式ドロップダウン: Chooses the file type you download. The page opens on its own output format; switch to any other format before converting.オプション: JPGPNGWebPAVIFGIFTIFFBMPICOPDF
品質スライダーレンジ: 20–100 · デフォルト: 90: For JPG, WebP, AVIF and image-to-PDF output: higher keeps more detail but makes a bigger file; 60–80 suits most photos. Documents (Publisher, XPS, EPS…) become PDFs with every page and sharp text, with no quality setting.
ロスレスモードオン/オフ: For WebP and AVIF output: keeps every pixel exactly (best for logos, graphics and transparency) at the cost of a larger file.
背景の塗りつぶしカラーピッカー: 透過を保存できないJPG、BMP、画像からPDFへの出力用：透明な部分を塗りつぶす色（既定は白）。