QBMFX Guided book page dewarp
Correct visible vertical curvature in a photographed book page using a manual three-row mesh. Follow the curved printed baselines or page boundaries with the guide handles, compare the corrected preview and adjust each scan individually. This guided transformation helps prepare flatter reading copies while keeping the source photograph for comparison and manual checking before printing.
Choose your files and review the settings.
Keep originals and inspect the result before printing. File changes clear previous downloads. Heavy image and OCR work can take longer on a phone.
Using Guided book page dewarp
- Choose a clear photograph of the full book page.
- Move the top, middle and bottom guides along matching curved baselines; inspect the corrected preview.
- Create corrected images and review each text line before printing or building a PDF.
Behind the result
The output samples source pixels through a piecewise bilinear mesh. Curved source guide rows map to straight output rows, with interpolation between the rows and five columns. Identity guides leave geometry unchanged; stronger correction can distort areas where guides do not follow the actual page.
Free tools for everyday work
Book centers, photocopy shops, freelancers and developers can use this workspace without a paid plan or account. Files are processed locally. Prepare website resources from offline setup before disconnecting; Urdu/OCR also needs the separate pack above.
The Windows app currently includes the original four tools. The expanded tools are available on the website; app and extension updates will be separate releases.
Answers and practical details
Manual verification
Always inspect line order, letters near the binding and page edges. Perspective correction straightens flat quadrilaterals; book dewarp addresses guided curvature and cannot restore content hidden in the gutter.
Price and account requirements
This website tool is 100% free. No login, subscription or paid conversion tier is required. Your device supplies the processing memory.
Optional cloud imports
Google Drive and Dropbox are optional online imports. They require provider sign-in and configuration, have provider quotas and offer cancellation. Local Choose files works without sign-in. Imported file bytes download directly to your browser for local processing.
Files and privacy
Input documents and generated results are handled locally. They are not sent to a QBMFX conversion API or stored in a customer database. Website hosting and advertising can still make separate network requests.
Offline preparation
Prepare the website resources from Help while connected, then test the required tool offline. OCR and Urdu text tools also need their optional language or font resources prepared first. Browser storage can be removed by the browser or by you.
Windows app and Edge extension
The existing installed app and extension contain the original four PDF tools. These new Book Center tools belong to the website release; they will need a separate installed-package update.