Deskew PDF
Straighten crooked scanned PDF pages, with an optional scan-cleaning setting.
This tool preserves normal PDF quality and structure for its core operation.
Choose files or drag them here
application/pdf · Up to 1 files · Max 25 MB per file
Options
Using Deskew PDF
Straighten crooked scanned PDF pages, with an optional scan-cleaning setting.
How to Use Deskew PDF (Step-by-Step)
Follow these quick steps to achieve optimal results in seconds.
Choose or Import Files
Upload or drag and drop your application/pdf file into the secure workspace.
Configure & Preview
Customize available settings, page ranges, or compression levels with real-time feedback.
Immediate Download
Execute processing and download your finalized output instantly without countdowns or watermarks.
Workflow
Process the scan and compare page alignment; enable cleaning only when needed.
Example to try
Use a slightly tilted text scan and compare its text baselines before and after.
Illustrative check using non-sensitive sample input; not a claim of a measured production result.
Limitations and review
Automatic correction depends on scan quality. Inspect faint text and handwritten marks after cleaning.
Processing and privacy
Input files or text and selected options are sent to a server processing job. Review the upload limits and job expiry shown in the workspace. Expiry and scheduled physical cleanup are separate events.
Read our full privacy policy →Privacy Guaranteed
Isolated sandbox execution with automated 30-min file deletion.
No Quality Loss
Lossless vector preservation and crisp high-DPI rendering without watermarks.
Immediate Access
Instant downloads with zero registration, subscriptions, or forced waiting gates.
Technical Specifications & Input Settings
The file picker accepts application/pdf. Select 1 file(s). The current web uploader limits each file to 25 MiB; the service may reject additional unsupported inputs.
- Clean scan noise
- Optional on/off setting.
Questions about Deskew PDF
Frequently asked technical and operational questions about deskew pdf.
How does automatic deskew detect tilted scan angles?
The algorithm performs Radon and Hough transform analysis on dominant text baselines across the page image to compute the rotation tilt down to tenths of a degree.
Will deskew sharpen fuzzy text on low-resolution scans?
Deskew straightens crooked scanning angles and includes an optional scan-cleaning filter to reduce background noise and speckles, but original DPI resolution is maintained.
Can deskew be run before OCR for higher text recognition accuracy?
Yes. Straightening text baselines significantly improves OCR character recognition rates and line segmentation accuracy for OCR engines.