How to enhance a scanned document with OnyxPDF
- Add photos of your document (take them with your camera or pick from the gallery).
- Drag the four corners to the document’s real corners — the page is warped straight.
- Choose a filter: Enhanced for colour documents, B&W for crisp text, and tune brightness/contrast.
- Add more pages if needed, then save everything as one PDF.
Why do it in your browser instead of uploading?
- Free with no watermark — CamScanner’s free tier stamps “Scanned by CamScanner” on exports and paywalls its best features.
- Multi-page batch: several photos become one tidy PDF.
- Real perspective correction with a grid-subdivision warp — the page is genuinely straightened, not just cropped.
- No cloud: your scans are not synced to INTSIG’s or anyone’s servers.
Good to know (honest limits)
- Corners are set by you, by dragging — there is no automatic edge detection (that needs heavy computer-vision models; the manual result is dependable, the automatic guess often is not).
- A very blurry or dark photo stays a weak scan; filters help, lighting helps more. Retake straight-on with light behind you for the best result.
- Deskew fixes perspective, not focus.
Frequently asked questions
Is this really a CamScanner alternative?
For the core job — photograph, straighten, filter, save as PDF, OCR — yes, and free: no watermark, no ads, no Premium tier, no cloud sync. CamScanner extras like cloud fax and ID/book modes are not included.
Can I scan several pages into one PDF?
Yes. Add multiple photos; each becomes a page of the same PDF, with its own corners and filter.
Can it read the text of my scan?
After saving the PDF, run it through the OCR tool on this site — it recognises text in seven languages, also on-device.
Where do my scans go?
Nowhere. The photos are processed in your browser and the PDF downloads to your device. There is no account and no sync.