PDFolio
合并 PDF按您选择的顺序，将两个或多个 PDF 合并为一个文件。整理拆分 PDF从源文档的页面或范围创建一个或多个新的 PDF。整理整理页面在导出新副本之前，为 PDF 的页面设定新的顺序。整理旋转 PDF将所选 PDF 页面顺时针或逆时针旋转。整理删除页面从 PDF 的副本中删除不需要的页面。整理提取页面把所选页面一起保存为一个新的 PDF。整理Alternate & Mix PDFInterleave pages from two or more PDFs for front-and-back scans.整理Split PDF in HalfSlice double-page book spreads vertically or horizontally into single pages.整理Split PDF by SizeDivide a large PDF into parts that each stay under a maximum file size.整理Split PDF by TextStart a new PDF file wherever a specific keyword or phrase appears.整理Split PDF by BookmarksSplit a PDF at its outline bookmarks so each chapter becomes its own file.整理Multiple Pages Per SheetPrint 2, 4, 6, 9, or 16 PDF pages onto a single A4 or Letter sheet.整理Compare PDFsCompare two PDFs side by side and highlight page-by-page text differences.整理工作流构建器将多个 PDF 操作串联在一起，一键运行。整理压缩 PDF通过无损清理和可选的图像优化，在本地减小 PDF 的体积。优化Repair PDFRecover pages and rebuild corrupted xref structures from damaged PDFs locally.优化OCR PDFExtract and inspect text streams from scanned or multi-page PDFs locally.优化Scan to PDFEnhance document photos with crisp black-and-white or color contrast into a PDF.优化添加水印在所选 PDF 页面上添加永久的文字水印。编辑页码添加页码，并可设置位置、格式、起始编号和封面处理方式。编辑Bates NumberingStamp sequential legal and archival Bates numbers with custom prefix and padding.编辑页眉和页脚在所选页面上添加简短的页眉和页脚。编辑裁剪 PDF从所选 PDF 页面裁去统一的边距。编辑调整尺寸更改纸张尺寸，或在所选 PDF 页面周围添加空白。编辑Flip PDFMirror PDF pages horizontally or vertically for iron-on transfers and reversed scans.编辑Invert PDF ColorsConvert PDF pages permanently to dark mode, sepia, or grayscale.编辑填写与签名创建输入、手写或图片形式的签名，并添加到所选 PDF 页面。编辑Fill PDF FormFill interactive AcroForm text fields and checkboxes locally and lock answers.编辑Clean Signature & ThumbmarkRemove paper background from a photographed signature or thumbprint into a transparent PNG.编辑PDF 批注为所选页面添加高亮、方框或备注。编辑图片转 PDF把 JPG 和 PNG 文件转换为 PDF，每页一张图片。转换PDF 转图片把所选 PDF 页面导出为 PNG 或 JPG 图片。转换PDF 转 ZIP把所选 PDF 页面作为 PNG 或 JPG 图片，打包成一个本地 ZIP 下载文件。转换PDF 转 HTML根据 PDF 中的可选文字，生成整洁易读的 HTML 文档。转换PDF 转 EPUB根据 PDF 中的可选文字，生成可自适应排版的 EPUB 电子书。转换PDF to WordExport selectable PDF text into an editable Word (.docx) document locally.转换PDF to CSV & ExcelExtract tabular rows and columns from PDF pages into a clean CSV spreadsheet.转换Markdown to PDFConvert Markdown (.md) files or pasted notes into a cleanly typeset vector PDF.转换CSV to PDFConvert CSV spreadsheets into formatted, paginated PDF tables locally.转换HTML to PDFConvert HTML files or markup into a clean, readable PDF document locally.转换PDF to AudioListen to any PDF read aloud in your browser and export a clean narration script.转换PDF to HandwritingConvert PDF text or notes into realistic handwriting on ruled or grid notebook pages.转换提取文字读取 PDF 的文字层，进行复制或下载为 TXT 文件。转换提取图片从 PDF 文档中取出原始图片文件，并以 ZIP 压缩包下载。转换保护 PDF使用 AES-256 为 PDF 设置打开密码并加密。保护解除 PDF 密码在知道当前打开密码或所有者密码的情况下，解除 PDF 的密码保护。保护编辑元数据查看、编辑或彻底删除 PDF 中作者、标题、主题等隐藏的元数据属性。保护Privacy Risk ScannerAudit a PDF for hidden metadata, form fields, and PII patterns, and strip metadata clean.保护Auto-Redact PIIAutomatically detect and permanently blackout emails, phones, IDs, and custom terms.保护Fingerprint PDFGenerate SHA-256/SHA-512 integrity hashes and optional recipient canary tags.保护拼合 PDF把表单和批注等交互元素合并到 PDF 的基础图层中。保护涂黑 PDF用黑色方块遮盖敏感信息。保护
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优化

OCR PDF

Extract and inspect text streams from scanned or multi-page PDFs locally. 在此设备上运行

添加文件

您的文档仅保留在浏览器中。

仅限PDF文件

Choose a local file to begin.

无上传队列

您的文档仅保留在浏览器中。

无需帐户

无需登录或服务器存储。

完成后清除

使用清除按钮立即释放数据。

指南

如何使用 OCR PDF

Convert scanned or image-based PDF pages into a searchable PDF with an selectable text layer and extracted text preview.
输入One PDF and optional page selection.
输出One searchable PDF with a reconstructed text layer plus full extracted text in the preview box.
隐私仅在此标签页中处理。

About OCR PDF

Convert scanned or image-based PDF pages into a searchable PDF with an selectable text layer and extracted text preview. Turn flat document scans, receipts, or legacy PDFs into searchable files where you can Ctrl+F and copy text.

Heavy handwriting or low-resolution skewed photos may not segment cleanly; use Scan to PDF first to boost contrast on camera photos.

How PDFolio helps you OCR PDF

PDFolio inspects each page for existing glyph vectors and runs local canvas character segmentation on image-only pages, embedding an invisible searchable text layer aligned with the page image.

If your PDF already has selectable text and you simply want a `.txt` download, use Extract Text.

Before you download

Clean, high-contrast 300 DPI scans yield the best character segmentation.

When the result is ready, download it immediately and open it in your usual PDF viewer to make a final check. You can then use Clear task data to release temporary file references from this browser tab. PDFolio does not create an account, cloud folder, or server-side document history.

A private way to OCR PDF

PDFolio handles the selected files in the active browser tab. A Web Worker on your device performs the PDF task so the interface can remain responsive; document bytes are not sent to a PDF processing server, upload queue, account database, or advertising platform.

步骤

  1. Add a scanned or hybrid PDF.
  2. Select the pages you want to process (or leave empty for all pages).
  3. Process locally to generate a searchable PDF and copyable text output.

注意事项： All recognition runs locally in your browser without sending scans to external cloud OCR APIs.

常见问题

Does OCR PDF keep the original visual look of my scan?

Yes. The original page visual is preserved while an invisible selectable text layer is placed underneath.

Is my scanned document uploaded to a cloud OCR server?

No. Everything executes locally inside your browser.

Does OCR PDF change my original file?

No. PDFolio creates a new file for download. Your source file remains unchanged on your device.

相关工具

转换提取文字优化Scan to PDF转换PDF to Word