Extract Text from PDF は何をしますか？
Extract Text from PDF はブラウザ上でデータを調査するツールで、結果と制限を明確に示します。 検証済みの機能： Page-by-page extraction, Selectable text, Copy-ready output, Explicit no-OCR boundary.
Text extraction and OCR are different operations
Use extraction when you can already select text in a PDF viewer. Use OCR for scans and photographed documents, then review the recognized text because OCR can introduce character errors.
使い方
- Open a PDF that contains selectable text and select Process.
- Review the output separated by --- Page N --- markers.
- Copy the text or download a .txt file; verify reading order for columns and complex layouts.
実際の入出力例
Extract one page with a text layer
入力
One-page PDF whose selectable text is: Invoice 1042出力
--- Page 1 ---
Invoice 1042The extractor joins text items already stored in the PDF; it does not recognize letters from pixels.
一般的なエラーと対処
| 症状 | 原因 | 対処 |
|---|---|---|
| A scanned page produces an empty page marker. | The page contains only an image and no selectable text layer. | Use OCR software; converting the page to an image does not create searchable text. |
| Words appear in an unexpected order. | PDF stores positioned text items rather than a guaranteed semantic reading sequence. | Review multi-column, table, and bidirectional text against the rendered page. |
Important behavior of PDF Text Extractor
このツール固有の制限： Scanned PDFs contain pixels rather than selectable text and require OCR, which this page does not claim to perform.
標準と実装の参考資料
- Mozilla PDF.js documentation (opens in a new tab)Documents the PDF parser and text-content API used by this page.
PDF Text Extractor — FAQ
Does the PDF Text Extractor upload my input?
No. Processing runs in the current browser tab, and the page does not send tool input to a KitLumi processing endpoint.
What input does the PDF Text Extractor accept?
It accepts one PDF with a text layer. The workspace checks the input and reports malformed or unsupported values before it produces a result.
What does the PDF Text Extractor produce?
It produces plain text separated by page markers. Copy and download controls appear when the output format supports them.
What limitation should I know?
Scanned PDFs contain pixels rather than selectable text and require OCR, which this page does not claim to perform.
更新内容
実質的な更新： PDF Text Extractor: Added Page-by-page extraction, Selectable text, Copy-ready output, Explicit no-OCR boundary, responsive controls, explicit runtime disclosure, and task-specific examples and limitations.