Deskew PDF
Automatically straighten scanned or tilted PDF pages. Fix skewed documents with precision angle detection.
Încărcați fișiere PDF scanate
Despre acest instrument
Deskew PDF automatically detects and straightens skewed scanned pages, so crooked text runs level again. It analyzes page angle and rotates content to compensate — ideal for scanner jams, phone-photo scans, and misfed documents. Each page is measured independently, so a mixed stack straightens correctly page by page.
Anyone digitizing paper archives, onboarding old forms, or scanning receipts into an accounting system hits crooked pages constantly. This tool batch-processes multiple scans in one pass, and heavier handwritten documents survive especially well. Museums and libraries use the same correction before OCR, since straight text is dramatically easier for text-recognition software to read.
Combining it with an OCR step is a common workflow: straighten first, then extract text for searchability. Correction happens locally in your browser, so the scanned originals — which may be signed or sensitive — never leave your device. Free, unlimited, and it makes a scanned archive dramatically more readable.
Practical guidance before you use Deskew PDF
Best for real document workflows
Use Deskew PDF when you need a quick browser-based result without creating an account or sending routine documents through an unnecessary upload workflow. Scanned Documents is a common example: Fix pages that were scanned at an angle from document feeders.
Privacy and file handling
EasyPDFNex prioritizes local processing in your browser. That means supported PDF operations run on your device, not in a public cloud queue. For sensitive files, review the output before sharing it, close the browser tab after downloading, and avoid processing documents you are not authorized to edit.
Quality checks after processing
After you process and download, open the result and check page order, text readability, signatures, links, and form fields. If the source file is scanned, encrypted, very large, or damaged, try a related workflow such as compress pdf, ocr pdf, repair pdf before repeating the task.
Start with a clean source file whenever possible. For Deskew PDF, the first step is usually "Upload Your PDF": Drag and drop your scanned PDF file or click to select. This simple preparation step prevents most failed exports, missing pages, and formatting surprises.
Editorial review note
This guidance is maintained by the EasyPDFNex editorial team and reviewed for practical PDF workflow accuracy. Tool pages are written to explain when a feature is useful, what to check before download, and where browser-based processing has limits.
Cum se utilizează
Upload Your PDF
Drag and drop your scanned PDF file or click to select.
Configure Settings
Adjust threshold sensitivity and DPI if needed for better detection.
Process and Download
Click Deskew to straighten pages and download the corrected PDF.
Cazuri de utilizare
Scanned Documents
Fix pages that were scanned at an angle from document feeders.
Mobile Scans
Correct tilted photos of documents taken with smartphones.
Archive Restoration
Straighten old scanned archives for better readability.
Întrebări frecvente
How accurate is the angle detection?
The tool uses projection profile variance analysis to detect skew angles up to ±10 degrees with high accuracy. It automatically skips pages with angles less than 0.3 degrees.
Will text quality be affected?
For rotations at multiples of 90 degrees, no quality loss occurs. For other angles, the tool rounds to the nearest degree and maintains good quality.
Can I deskew specific pages only?
The tool analyzes all pages but only corrects those with detected skew above the sensitivity threshold. Pages with minimal skew are left unchanged.
What is the sensitivity threshold?
Values 1-10 correct obvious tilts only, 11-20 detect moderate skew, and 21-30 catch subtle angles. Default is 10 for balanced detection.
How long does processing take?
Processing time depends on file size and DPI. 150 DPI (default) provides good balance between speed and accuracy. Higher DPI is more accurate but slower.