How to use it
- Tap to take a photo of the page, or choose existing photos.
- Check the detected corners and drag them if needed.
- Pick a filter: Enhanced, Color, Grayscale or Black & white.
- Add more pages and drag them into order.
- Click Create PDF.
From photo to scan
A photo of a document is not a scan: the page is tilted, the background shows the table, shadows darken one side, and the file is a huge image. This tool fixes all of that in your browser:
- Edge detection. It finds the four corners of the sheet in the photo. When it succeeds, you see page detected.
- Perspective correction. The page is straightened and flattened into a rectangle, as if scanned from directly above.
- Filter. The image is cleaned up for reading and printing.
- PDF. All pages are combined into one PDF, Letter-sized or at the straightened image size.
If detection misses, drag the four round handles onto the corners of the page. While you drag, a magnifier shows the corner up close, since your finger hides it on a phone. On a keyboard, focus a handle and use the arrow keys (Shift for bigger steps). Auto-detect tries again and Full image uses the whole photo.
Filters
| Filter | Best for |
|---|---|
| Enhanced (default) | Most documents: brighter paper, darker text, color kept |
| Color | Photos, colored forms, documents with stamps or highlights |
| Grayscale | Text documents where color does not matter; smaller files |
| Black & white | Crisp, high-contrast text, like a photocopy; smallest files for plain text |
Switch to the Result view to see the straightened, filtered page before you save it. You can also rotate each page left or right and delete pages you do not need.
Tips for good scans
- Contrast helps detection. Put white paper on a darker surface, such as a wooden table or a dark folder.
- Even light. Daylight or a ceiling light without harsh shadows; avoid using the flash, which causes glare.
- Hold the phone flat above the page, with the whole sheet in view and a little background around it.
- Fill the frame reasonably: more pixels on the page means sharper text.
- Multi-page documents: add all pages, then drag the thumbnails into order (keyboard: handle, Space, arrows, Space).
Private: photos stay on your phone
Edge detection, straightening and filtering all run on your device. Your photos are not uploaded to a server, which is important for IDs, medical forms, tax documents and contracts. Nothing is kept after you close the page.
After scanning
- Make the text searchable and copyable: the result screen has a button that sends the PDF straight to OCR PDF.
- Too large to upload? Compress PDF.
- Need to sign it? Sign PDF.
- Adding the scan to other documents? Merge PDF.
- Already have clean images and just want a PDF? JPG to PDF is faster.
A worked example. You need to send a signed 3-page lease to a property manager, but you have no scanner. Lay page 1 on a dark table, open this page on your phone, and tap to take a photo. The corners are detected and the Result view shows a straight white page. Add pages 2 and 3 the same way, check the order in the thumbnail strip, and tap Create PDF. You get scan.pdf, a clean three-page document sized for Letter paper, ready to email.
Frequently asked questions
Can I scan documents to PDF with my phone?
Yes. Open this page in your phone's browser, tap to take a photo, and the page is detected, straightened and saved to a PDF.
What if the edges aren't detected?
Drag the four corner handles onto the page corners. A magnifier helps you place them precisely.
Can I scan multiple pages into one PDF?
Yes. Keep adding photos; each becomes a page, and you can drag them into order.
Which filter should I use?
Enhanced works for most documents. Use Black & white for plain text and Color for photos or colored forms.
Are my photos uploaded?
No. All processing happens on your device.
Last updated: November 12, 2026