文字化けしたときにPDFファイルを修復する方法
文字化けしたときにPDFファイルを修復する方法
Windows 10で文字化けしたときにPDFファイルを修正する方法は次のとおりです。
PDF 内の文字が四角形やその他の記号に文字化けしている
PDF内の文字が正方形やその他の記号に文字化けした場合の基本的な解決策を紹介します。
アドビアクロバットリーダーDCを閲覧する
Google ChromeなどのPDFビューア内蔵ブラウザやアドビ製品以外の閲覧ソフトウェアでPDFを開くと、PDF内の文字が正しく表示されないことがあります。
この場合は、Adobe Acrobat リーダー DC で PDF をもう一度開いてみて、文字化けした文字が改善されるかどうかを確認します。
Adobe Acrobat Reader DC のインストール方法については、次の記事を参照してください。
Adobe Acrobat Reader DC を最新の状態に保つ
以前のバージョンの Adobe Acrobat Reader DC で新しい規格の PDF を開くと、互換性の問題により文字化けすることがあります。
Adobe Acrobat Reader DC を最新バージョンにアップデートしてから、もう一度参照してみてください。
Adobe Acrobat Reader DC をアップデートする方法については、次の記事「Adobe Acrobat Reader DC をアップデートする方法」を参照してください。
フォントを変更する
pdf変換前の文書を持っていて変更できる場合は、フォントをOS標準フォントに変更し、再度PDFに変換してみてください。
Windowsならゆうゴシックや明晰フォントがおすすめですが、特にゆうゴシックはMacに標準でインストールされているので、文字化けなどの対策として適しています。
フォントを埋め込む
PDFにフォント情報が埋め込まれていない場合、別のPCでPDFを開いたときに文字化けすることがあります。
PDF 変換前の文書があり、文字を変更せずに文字化けした文字をなくすには、次の手順に従って PDF のフォント埋め込み設定を行います。
※今回は、Wordでフォント埋め込み設定を有効にする方法を説明します。
Word にフォントを埋め込む文書を開きます。
[[File]タブを画面の左上に配置します。
選ぶ[Options]画面の左下にあります。
Word オプションダイアログボックスが表示されます。
(1) 選択[Save]タブ、および(2)チェック[Embed font in file].
(3)[OK]ボタンをクリックして完了します。
もう一度PDFに変換してみてください。
フォントのインストール
pdf変換前の文書がなく、PDFが保護されている場合など、フォントを変更できない場合があります。
このような場合、アドビアクロバットリーダーDCは、PDFに使用されているフォントを確認し、そのフォントをPCにインストールすることで、文字化けを解消できる場合があります。
PDFで使用されているフォントは、以下の手順で確認できます。
Adobe Acrobat Reader DC でフォント情報を表示する PDF を開きます。
(1) 選択[File]タブを画面左上に、(2)[Properties].
ドキュメントのプロパティダイアログボックスが表示されます。
(1) 選択[Font]タブ。
(2)から[In the red frame]フォント情報を確認できます。
確認したフォントが PC にインストールされていない場合は、フォントをインストールしてみてください。
PC にフォントをインストールする方法については、次の記事を参照してください。
フォントキャッシュを削除する
Windows OSは、さまざまなプログラムやアプリケーションを起動するときに読み込みを高速化するために、フォント情報を一時的にキャッシュとして保存します。
ディスクエラーやウイルスなどにより蓄積されたフォントキャッシュが破損し、フォントが正しく表示されない場合は、フォントキャッシュを再構築すると問題が改善することがあります。
フォントキャッシュを再構築するには、次の手順を実行してフォントキャッシュを削除し、自動的に再生成し、破損を修正します。
タスク バーから[エクスプローラー]を選択します。
エクスプローラダイアログボックスが表示されます。
赤枠で「C:WindowsSystem32」と入力します。入るキーを押します。
(1) 検索ボックスで、「FNTCACHE」をクリックします。DAT」とプレス (2)[→]ボタン。
(1)【FNTCACHE.ダット。
(2) 選択[Home]タブ, (3)[Delete].
[ファイル アクセスの拒否]ダイアログ ボックスが表示されます。
続行ボタンを押します。
削除が完了したら、PCを再起動して完了です。
テキストをコピーして貼り付けると文字化けする
閲覧に成功した場合でも、PDF内のテキストをコピーして貼り付け(貼り付け)すると文字化けすることがあります。
フォント情報がPDFに埋め込まれていない、またはフォント情報が破損しているためにテキストを正常にコピー&ペーストできない場合は、PDFからテキストを抽出してコピー&ペーストする方法があります。
PDF からテキストを抽出する方法については、次の記事を参照してください。
Word または Excel に変換すると文字化けする
PDF形式での閲覧に成功しても、Word(単語)やExcel(エクセル)への変換が文字化けすることがあります。
PdfからOfficeへのドキュメント変換は、もともと再現性が保証されているわけではなく、注釈やブックマークなどのいくつかの要素を含むPDFは、変換時に問題が発生することがわかっています。
したがって、マイクロソフトサポートはPDFをOfficeドキュメントに変換することをお勧めしませんが、本当に変換を行う場合は、サードパーティの変換ソフトウェアを使用しても問題ない場合があります。
PDFをWord形式に変換できるフリーソフトについて知りたい方は、以下の記事を参照してください。
無料でPDFを単語に変換する7つの方法(PDFを単語に変換する)
PDFをExcel形式に変換できるフリーソフトについて知りたい方は、以下の記事を参照してください。
pdf の宛先が文字化けしている
pdfハイパーリンクが文字化けした場合、ファイル名は日本語になっている可能性があります。
ファイル名を英数字に変更し、リンクに再度アクセスしてみてください。
電子メールで添付されたPDFが文字化けした
メールに添付されているPDFのファイル名が日本語で書かれている場合、文字化けすることがあります。
このような場合は、送信者にファイル名を半角英数字に訂正してもらい、再送してもらう必要があります。
また、ブラウズ時にAdobe Acrobat Reader DCを使用すると、正常にブラウズできる場合があります。
Adobe Acrobat Reader DC のインストール方法については、次の記事を参照してください。
PDF の印刷時に文字化けした文字
フォントが埋め込まれていない PDF を印刷すると、文字化けが発生する可能性があります。
PDF にフォントが埋め込まれているかどうかを確認するには、「フォントのインストール」を参照してください。
また、フォントの埋め込み設定を有効にする方法については、上記の「フォントを埋め込む」セクションを参照してください。
Mac用
MacでPDFを印刷するときに文字化けが発生した場合は、フォントの埋め込みにも問題がある可能性があります。
以下の手順でPDFを再度書き出すと、フォントを正しく埋め込むことができますので、お試しください。
PDF をプレビューで開きます。
(1) 選択[File]タブ, (2)[Export as PDF].
ダイアログボックスが表示されます。
(1)「任意のファイル名」を入力し、(2)を押します。[Save]ボタン。
フォントが正しく埋め込まれた PDF が書き出されました。
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