Deskew PDF
Automatically straighten scanned or tilted PDF pages. Fix skewed documents with precision angle detection.
Clear file handling
Built for real workflows
Progress and feedback
Useful options, not clutter
Upload Scanned PDF Files
Drag and drop PDF files here. You can process up to 10 files at once.
Smart workflow
Do more in the same workflow
Build from the job you started: batch compatible files, keep the right output format, then move straight into the next useful step without hunting through the site.
Input
Output
Batch
10 files per run
10 files per run. Use one run when the files share the same task.
Choose a related operation below instead of starting from scratch.
Results stay focused on download, preview and the next useful action.
No fixed file-size limit per configured tool limit.
Natural next steps
Continue with a related tool using the same file workflow.
Smart workflows
Finish the job, not just the file
Use the existing tool graph to continue into useful next steps. Bulk and output-packaging capabilities are surfaced automatically where the underlying tool supports them.
Continue with Compress Pdf
Bulk-readyFinish the job after Deskew Pdf with a relevant MAXScanner tool, without creating a duplicate converter page.
- Deskew Pdf
- Compress PdfBulk processing · ZIP-ready output · Smart size controls
Best when Deskew Pdf is only the first step in your workflow.
ContinueContinue with Repair Pdf
Bulk-readyFinish the job after Deskew Pdf with a relevant MAXScanner tool, without creating a duplicate converter page.
- Deskew Pdf
- Repair PdfBulk processing · ZIP-ready output · Workflow-ready
Best when Deskew Pdf is only the first step in your workflow.
ContinueMake the next step easier
Use Deskew Pdf as part of a complete document workflow: process the file, review the result, then continue into the next useful step instead of returning to a generic tools catalogue.
Clear file-to-result workflow
Useful controls without unnecessary clutter
Mobile-friendly processing experience
Continue directly into related tools
A smoother workflow
- 1Add the file for Deskew Pdf
- 2Choose only the settings that matter for the destination
- 3Process and review the result
- 4Continue to the next useful tool when the job is not finished
A human tip
The useful version of Deskew Pdf
A conversion tool is most valuable when it removes the work around the conversion. People usually arrive with a destination in mind—an upload, a submission, an email, a report, a website or another editing step. The page should make that destination obvious, keep the interface focused, and offer a sensible next action when the first operation is only part of the job.
About This Tool
Deskew PDF automatically detects and corrects tilted or skewed pages in your PDF documents using advanced projection profile variance analysis. This is essential for scanned documents that were fed into the scanner at an angle.
The tool analyzes the text and content alignment at different angles to find the optimal rotation, then applies the correction. You can adjust the sensitivity threshold (1-30) and DPI settings (72-300) for optimal results.
All processing happens locally in your browser using WebAssembly technology, ensuring your documents remain private and secure.
How to Use
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.
Use Cases
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.
Frequently Asked Questions
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.