How do I convert HEIC to ICO?

Upload your HEIC file above. It is converted to ICO 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 HEIC to ICO lose quality?

Each icon size is scaled down from your image and stored without further compression, so small sizes stay crisp.

HEIC or ICO: which should I use?

Use HEIC for saving storage space on iPhones and iPads. Use ICO for website favicons and Windows app or shortcut icons. Keep in mind the main drawback of ICO: icons are square and at most 256 × 256 pixels.

HEICファイルとは？

HEICはiPhoneやiPadが写真を保存する標準の形式です。同程度の画質ならJPGの最大半分の容量で済みますが、多くのWindowsパソコン、Androidアプリ、Webサイトではまだ開けません。

What sizes does the ICO file include?

The standard icon sizes of 16, 32, 48, 64, 128 and 256 pixels, skipping any larger than your image. Browsers and Windows pick the best size automatically.

Is the HEIC to ICO 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 HEIC to ICO — Favicons and Windows Icons

Convert HEIC to ICO online to make a favicon or Windows icon in several sizes. No software to install. Preview one free or batch-convert with Premium.

Drop your HEIC file or click to browse

Why convert HEIC to ICO?

ICO is supported far more widely than HEIC, so the file is easier to open, share and upload.
One ICO bundles the standard 16 to 256 px icon sizes (up to the size of your image), ready for a favicon.ico or a Windows shortcut.

What to expect when converting HEIC to ICO

アイコンは正方形のため、正方形でない画像は透明な正方形の中央に配置されます。元の画像より大きなサイズは作成されないため、256 × 256ピクセル以上の画像から始めてください。
ハイダイナミックレンジや広色域のディテールは、標準の8ビットカラーに変換されます。

HEICとICOの比較

機能	HEIC	ICO
氏名	High Efficiency Image Container	Windowsアイコン
由来	iOS 11（2017年）以降のAppleの標準写真形式	Created by Microsoft for Windows icons
圧縮	非可逆（HEVC）	Lossless images at several sizes
透過	iPhoneの写真では使われない	Yes — smooth, partial transparency
アニメーション	いいえ	いいえ
色	チャンネルあたり8または10ビット、広色域	透過対応のフルカラー
開けるアプリ	Apple devices; many Windows PCs, Android apps and websites need extra software	Browsers (as favicon.ico), Windows and icon editors
こんな方に最適	saving storage space on iPhones and iPads	website favicons and Windows app or shortcut icons
主な欠点	limited support outside Apple devices	icons are square and at most 256 × 256 pixels

In short: choose HEIC for saving storage space on iPhones and iPads; choose ICO for website favicons and Windows app or shortcut icons.

Frequently asked questions

How do I convert HEIC to ICO?: Upload your HEIC file above. It is converted to ICO 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 HEIC to ICO lose quality?: Each icon size is scaled down from your image and stored without further compression, so small sizes stay crisp.
HEIC or ICO: which should I use?: Use HEIC for saving storage space on iPhones and iPads. Use ICO for website favicons and Windows app or shortcut icons. Keep in mind the main drawback of ICO: icons are square and at most 256 × 256 pixels.
HEICファイルとは？: HEICはiPhoneやiPadが写真を保存する標準の形式です。同程度の画質ならJPGの最大半分の容量で済みますが、多くのWindowsパソコン、Androidアプリ、Webサイトではまだ開けません。
What sizes does the ICO file include?: The standard icon sizes of 16, 32, 48, 64, 128 and 256 pixels, skipping any larger than your image. Browsers and Windows pick the best size automatically.
Is the HEIC to ICO 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.

HEICからICO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 HEIC files to ICO online
Bundle standard icon sizes from 16 to 256 px in one file
Switch to any other output format in Settings
Batch-convert many HEIC 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

HEICからICO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）。