QBMFX Remove scan shadows
Reduce broad dark shadows and uneven paper brightness in a document photograph. The cleanup is useful for camera scans taken under a ceiling light or near a book binding. Review the output at reading size before printing; faint ink, photographs and colored paper need gentler settings because background cleanup can change their appearance as well.
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 Remove scan shadows
- Choose a document photograph with uneven lighting.
- Select the cleanup settings and generate a preview file.
- Compare faint text and stamps before using the cleaned result.
Behind the result
Local brightness is estimated across the image and used to normalize its illumination. The operation aims to lighten the paper background while retaining darker text pixels.
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. These new Book Center tools are available on the website; app and extension updates will be separate releases.
Answers and practical details
Best source photographs
Use diffuse lighting, keep fingers outside the page and avoid a strong camera flash reflection. Better capture often preserves more detail than aggressive cleanup.
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.
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.