Document Scanner Hub
Document Scanner: a straight page from a photo
Upload a photo or open the phone camera, straighten the page, and download a PNG or a one-page PDF. One sheet at a time, in the browser.
Written by Safaat Rahman Siham, Founder & Developer at Convertify4u. Contact us.
A straightened page, then a file you can attach
Camera app or a photo you already have
The capture control is a file input with capture set to environment. On a phone that opens the camera app, not an in-page live video window. Take the shot, or upload a picture that is already on the device. Fill the frame with the paper, and keep the glare off the middle of the sheet. Desktop users can drop a photo the same way.
Corners, warp, and the three filters
Detection works at 720 pixels, then the page is warped with a homography so the sheet sits flat. The output long side adapts to about 1600 to 3600 pixels. You can nudge the corners if the first guess includes the table. Original, Magic Color, and Black and White are the filters, and Magic Color is the one selected when you start.
PNG, a one-page PDF, or a merged ID
A standard document downloads as PNG, and also as a single-page PDF. That PDF embeds a JPEG at quality 0.92 and fits it on an A4 page. ID card mode merges the front and the back onto a 1240 by 1754 canvas, and that merge can export as PDF. Scan another page starts a fresh capture. The letters stay in the picture, because this page has no OCR.
How it works
- 1
Add one page
Choose standard document or ID card. Upload a photo, or on a phone open the camera app from the capture control. For an ID, shoot the front, then the back. One page is the unit of work, and a new page starts a fresh capture.
- 2
Check the corners and the filter
Confirm the four corners sit on the paper. Magic Color is the default. Switch to Original or Black and White if the page looks better that way. If the sheet is sideways, turn the photo upright before you commit the corners.
- 3
Download PNG or a single-page PDF
A standard scan can save as PNG or as one PDF page, with a JPEG at quality 0.92 fitted on A4. An ID exports from the merged 1240 by 1754 canvas. Open the file and confirm the edges before you attach it.
Use cases
A form that wants a PDF of a paper sheet
A signed page or a letter still lives on paper. Straighten it and attach the one-page PDF instead of a tilted snapshot.
An ID with a front and a back
ID card mode places both sides on one 1240 by 1754 canvas so you can export a single PDF of the pair.
A receipt or a worksheet to file
Magic Color lifts a faint thermal slip or a pencil worksheet enough to read later. The words remain part of the picture.
Problems we solve
The crop includes the table
Drag the corners onto the paper. Detection starts from a 720 pixel view, and a busy background can pull the quad wide.
You expected editable text
This scan saves a picture. Reading the letters into a text file is a separate OCR tool. Each capture is one page, and a fresh scan starts the next sheet.
Related guides
Related document tools
Pair the Document Scanner with PDF compress, merge, or image converters before or after scanning.
- PDF Compressor
Shrink a finished packet when email still rejects the attachment.
- PDF Merger
Join packets you already exported if you scanned in separate sessions.
- Image Compressor
Trim JPEG bloat on a page that is already cropped and readable.
- HEIC to JPG
iPhone Live Photos often save HEIC — convert first if the picker fights you.
- Crop Image
Cut table edges and thumbs out of the frame before you export.
Privacy & security
The page stays in the browser
Straightening, filters, and export run locally. The download is the scan itself.
One honest page
Scan another page starts a fresh capture. You get a PNG or a single-page PDF, not a binder that silently stacks sheets.