Document Scanner
Scan documents with your camera, fix the perspective and export to PDF with OCR. Multi-page, mobile-first and 100% in your browser.
How it works
Take a photo of the document (or upload it), adjust the 4 corners and it's straightened with perspective correction for that flat scanner look. Apply a filter (Magic enhances, B&W cleans shadows), scan several pages and export to PDF or images. You can even extract the text with OCR. All on your device, nothing uploaded.
Built by
Miguel Ángel Colorado Marin (MACM)
Built by
Miguel Ángel Colorado Marin (MACM)
Full-Stack Developer · Guadalajara, España
I develop web apps, digital tools and full projects — from design to deployment.
How to scan a document?
- 1
Capture the document
Open the camera and take a photo of the document, or upload an image from your gallery. On mobile use the back camera for better quality. Everything runs in your browser: nothing is uploaded to any server.
- 2
Adjust the corners
The tool auto-detects the document edges. If it misses, drag the 4 green corners to frame it; a precision loupe appears to fine-tune even with your finger on mobile.
- 3
Straighten and pick a filter
The perspective is corrected and the document becomes flat, like scanned. Choose the filter: Magic enhances and whitens the background, Gray for grayscale, or Black & White for clean text with no shadows.
- 4
Scan more pages
Tap Save and repeat to add more pages. They stack in a thumbnail list you can reorder, rotate, re-edit or delete.
- 5
Export to PDF or images
Download all the pages as a single multi-page PDF, or as images in a ZIP. You can also extract the text from any page with OCR and copy it.
Frequently asked questions
Are my documents uploaded to a server?
No. All scanning, filters and OCR run 100% in your browser. Your documents are never sent to any server or stored, and you can disconnect the Internet after the page loads. It's the most private way to scan confidential papers.
Does it work well on mobile and tablet?
Yes, it's designed for mobile. Scan with the back camera, the buttons are large and touch-friendly, and when adjusting corners a loupe appears so you don't miss with your finger. It works the same on tablet and desktop (where you can upload photos).
How does it get the flat document look?
It detects the 4 corners of the document in the photo and applies a perspective correction (homography) that straightens the paper into a perfect rectangle, just like phone scanner apps. If auto-detection misses, you adjust the corners by hand.
Can I extract the text with OCR?
Yes. Tap the text icon on a page and the text is recognized with OCR right on your device (the recognition engine downloads the first time). Then you can copy the text. It recognizes Spanish and English.
Can I combine several pages into a single PDF?
Yes. Scan as many pages as you need, reorder them by dragging or with the arrows, and download them as a single multi-page PDF, or as images in a ZIP. No watermark, no limit and no sign-up.
Which filter should I use?
Magic is best for most cases: it boosts contrast and whitens the background while keeping color. Black & White uses adaptive thresholding, ideal for text and for light PDFs with no shadows. Gray and Color are also available.
Related tools
Embed Document Scanner on your site
Add Document Scanner to any web page with a simple iframe. Free, with attribution to miguelacm.es.
<iframe
src="https://miguelacm.es/embed/document-scanner"
width="100%"
height="700"
frameborder="0"
title="Document Scanner — miguelacm.es"
></iframe>