How do I convert ICO to PDF?

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

The image is embedded in the PDF as a high-quality JPEG at its full pixel size.

Will the PDF keep the transparent background?

いいえ。PDFは透過を保存できないため、透明な部分は「設定」で選んだ背景色（既定は白）で塗りつぶされます。

ICO or PDF: which should I use?

Use ICO for website favicons and Windows app or shortcut icons. Use PDF for emailing, printing and attaching images to forms and applications. Keep in mind the main drawback of PDF: the picture isn't editable as an image until you convert it back.

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.

Can I put several ICO images into one PDF?

This converter makes one PDF page per image. To combine several images into one PDF, use the Image to PDF tool.

Is the ICO to PDF 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 PDF — One-Page PDF to Print or Email

Convert ICO to PDF online to get a one-page PDF you can print, email or upload. No software to install. Preview one free or batch-convert with Premium.

Drop your ICO file or click to browse

Why convert ICO to PDF?

PDF is supported far more widely than ICO, so the file is easier to open, share and upload.
The PDF page is sized to your image, so it prints and previews without cropping or extra borders.

What to expect when converting ICO to PDF

PDFは透過を保存できないため、透明な部分は「設定」で選んだ背景色（既定は白）で塗りつぶされます。
You get one page per image, with the picture embedded as a high-quality JPEG. To combine several images into one PDF, use the Image to PDF tool.

ICOとPDFの比較

機能	ICO	PDF
氏名	Windowsアイコン	Portable Document Format
由来	Created by Microsoft for Windows icons	Created by Adobe in 1993; an ISO standard since 2008
圧縮	Lossless images at several sizes	Document page with the image embedded at high quality
透過	Yes — smooth, partial transparency	No — transparent areas get a solid background
アニメーション	いいえ	いいえ
色	透過対応のフルカラー	フルカラー
開けるアプリ	Browsers (as favicon.ico), Windows and icon editors	Built-in viewers in browsers, phones and computers
こんな方に最適	website favicons and Windows app or shortcut icons	emailing, printing and attaching images to forms and applications
主な欠点	icons are square and at most 256 × 256 pixels	元の形式に戻すまで、画像として編集できない

In short: choose ICO for website favicons and Windows app or shortcut icons; choose PDF for emailing, printing and attaching images to forms and applications.

Frequently asked questions

How do I convert ICO to PDF?: Upload your ICO file above. It is converted to PDF 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 PDF lose quality?: The image is embedded in the PDF as a high-quality JPEG at its full pixel size.
Will the PDF keep the transparent background?: いいえ。PDFは透過を保存できないため、透明な部分は「設定」で選んだ背景色（既定は白）で塗りつぶされます。
ICO or PDF: which should I use?: Use ICO for website favicons and Windows app or shortcut icons. Use PDF for emailing, printing and attaching images to forms and applications. Keep in mind the main drawback of PDF: the picture isn't editable as an image until you convert it back.
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.
Can I put several ICO images into one PDF?: This converter makes one PDF page per image. To combine several images into one PDF, use the Image to PDF tool.
Is the ICO to PDF 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PDF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 PDF online
Get a one-page PDF sized to your image
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PDF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）。