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Merge PDFCombine PDF files in any order.OrganizeSplit PDFCreate a PDF from the page range you choose.OrganizeOrganize PDFReorder pages with a simple page sequence.OrganizeRotate PDFRotate selected pages by 90 degrees.OrganizeDelete pagesRemove pages from a local PDF.OrganizeExtract pagesSave selected pages as a new PDF.OrganizeAlternate & Mix PDFInterleave pages from two or more PDFs for front-and-back scans.OrganizeSplit PDF in HalfSlice double-page book spreads vertically or horizontally into single pages.OrganizeSplit PDF by SizeDivide a large PDF into parts that each stay under a maximum file size.OrganizeSplit PDF by TextStart a new PDF file wherever a specific keyword or phrase appears.OrganizeSplit PDF by BookmarksSplit a PDF at its outline bookmarks so each chapter becomes its own file.OrganizeMultiple Pages Per SheetPrint 2, 4, 6, 9, or 16 PDF pages onto a single A4 or Letter sheet.OrganizeCompare PDFsCompare two PDFs side by side and highlight page-by-page text differences.OrganizeWorkflow BuilderChain multiple PDF operations in one go.OrganizeCompress PDFReduce PDF file size locally with adaptive optimization.OptimizeRepair PDFRecover pages and rebuild corrupted xref structures from damaged PDFs locally.OptimizeOCR PDFExtract and inspect text streams from scanned or multi-page PDFs locally.OptimizeScan to PDFEnhance document photos with crisp black-and-white or color contrast into a PDF.OptimizeWatermark PDFStamp text across every page.EditPage numbersAdd page numbers to every page.EditBates NumberingStamp sequential legal and archival Bates numbers with custom prefix and padding.EditHeader and footerAdd a short header and footer to every page.EditCrop PDFTrim the same edge margin from every page.EditResize PDFResize pages, choose paper sizes, or add margins.EditFlip PDFMirror PDF pages horizontally or vertically for iron-on transfers and reversed scans.EditInvert PDF ColorsConvert PDF pages permanently to dark mode, sepia, or grayscale.EditSignature markAdd a visible signature, initials, or form text to selected PDF pages.EditFill PDF FormFill interactive AcroForm text fields and checkboxes locally and lock answers.EditClean Signature & ThumbmarkRemove paper background from a photographed signature or thumbprint into a transparent PNG.EditAnnotate PDFAdd a highlight, box, or note to every page.EditImages to PDFTurn JPG and PNG images into one PDF.ConvertPDF to imagesExport local PDF pages as PNG images.ConvertPDF to ZIPBundle selected PDF pages as images in one ZIP file.ConvertPDF to HTMLExport a PDF text layer as a private HTML page.ConvertPDF to EPUBCreate a reflowable EPUB from a PDF text layer.ConvertPDF to WordExport selectable PDF text into an editable Word (.docx) document locally.ConvertPDF to CSV & ExcelExtract tabular rows and columns from PDF pages into a clean CSV spreadsheet.ConvertMarkdown to PDFConvert Markdown (.md) files or pasted notes into a cleanly typeset vector PDF.ConvertCSV to PDFConvert CSV spreadsheets into formatted, paginated PDF tables locally.ConvertHTML to PDFConvert HTML files or markup into a clean, readable PDF document locally.ConvertPDF to AudioListen to any PDF read aloud in your browser and export a clean narration script.ConvertPDF to HandwritingConvert PDF text or notes into realistic handwriting on ruled or grid notebook pages.ConvertExtract textRead text from a local PDF.ConvertExtract ImagesSave all embedded images from a PDF in their original format.ConvertProtect PDFEncrypt a PDF with an opening password.ProtectUnlock PDFRemove a PDF password you know, locally.ProtectEdit MetadataChange or remove PDF author, title, and other metadata.ProtectPrivacy Risk ScannerAudit a PDF for hidden metadata, form fields, and PII patterns, and strip metadata clean.ProtectAuto-Redact PIIAutomatically detect and permanently blackout emails, phones, IDs, and custom terms.ProtectFingerprint PDFGenerate SHA-256/SHA-512 integrity hashes and optional recipient canary tags.ProtectFlatten PDFLock interactive forms and annotations so they cannot be edited.ProtectRedact PDFPermanently blackout sensitive information in your PDF.Protect
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Repair PDF

Recover pages and rebuild corrupted xref structures from damaged PDFs locally. Runs on this device

Add your files

Your documents are held only in your active browser tab.

PDF files only

Choose a local file to begin.

No upload queue

Your documents are held only in your active browser tab.

No account

There is no sign-in, batch quota, or server file store.

Clear when done

Use the clear control to release task data immediately.

Guide

How to use Repair PDF

Parse damaged or non-standard PDFs in tolerant mode and rebuild a clean, standards-compliant PDF container.
InputOne damaged, truncated, or poorly generated PDF.
OutputOne rebuilt, sanitized PDF file.
PrivacyProcessed only in this browser tab.

About repair PDF

Parse damaged or non-standard PDFs in tolerant mode and rebuild a clean, standards-compliant PDF container. Fix PDFs with broken xref tables, malformed scanner exports, or legacy documents that trigger errors in strict corporate portals.

A file that is completely zeroed out, encrypted with an unknown password, or truncated before any page objects exist cannot be recovered.

How PDFolio helps you repair PDF

PDFolio first attempts tolerant structural parsing with pdf-lib and rebuilds every valid page into a fresh object stream table. If structural parsing fails, it falls back to PDF.js stream recovery to rescue readable pages.

If a file will not open because it requires a password you know, use Unlock PDF instead.

Before you download

Always review all pages in the repaired output to verify no content was truncated in the damaged source file.

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 repair 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.

Steps

  1. Add the PDF file that fails to open properly in strict viewers.
  2. Click Process to run structural recovery and visual fallback reconstruction.
  3. Download the repaired PDF and inspect its pages.

Good to know: If the object tree is too corrupted for vector cloning, PDFolio automatically attempts page-by-page visual rescue via PDF.js.

Frequently asked questions

How can a browser repair a corrupted PDF without uploading it?

PDFolio runs two distinct PDF parsers in WebAssembly/JavaScript that rebuild broken cross-reference tables and page trees directly in memory.

Can Repair PDF fix a password-protected file?

No. Encrypted files must be unlocked with their password in Unlock PDF first.

Does repair PDF change my original file?

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

Related tools

ProtectFlatten PDFOptimizeCompress PDFProtectPrivacy Risk Scanner