Edit a WhatsApp document scan scan without converting it
Scanned something with WhatsApp document scan and spotted a mistake? Click the words on the scan and type the fix. Camera foreshortening is fitted as a horizontal scale on each line, and the paper grain around the word is kept, so the new word sits in the photo like the old one.
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How to do it
- 1.Drop your scanned PDF into MythosPDF. The words on each page become clickable boxes.
- 2.Click the first word, Shift+click to extend along the line, then double click or press Enter and type the new text.
- 3.Press Enter to apply the change, then Export PDF.
How WhatsApp document scan scans
- • WhatsApp can scan a document with the camera and send it as a PDF.
- • Phone scanners photograph the page, straighten and crop it, and save the image into a PDF.
- • Photos carry perspective, uneven light and JPEG compression, and some apps add a hidden OCR text layer.
- • Camera foreshortening is fitted as a horizontal scale on each line, and the paper grain around the word is kept, so the new word sits in the photo like the old one.
How MythosPDF edits a scan directly
- • Words are found from the ink on the page with OCR, not from a scanner's hidden text layer, which often drifts.
- • The font of the line is identified from the letter shapes, together with size, stroke weight and slant of the photo.
- • Only the pixels of the words you change are redrawn, in the page's own ink tone, with the surrounding paper grain kept.
- • The rest of the page image stays byte for byte the same, and any hidden OCR layer is updated so search finds the new words.
- • Each edit is read back by OCR and checked for ghosts of the old ink before you see it.
Good to know
- • Changes replace words within one line. A longer replacement moves the rest of that line along; adding new lines or deleting words is not available on scans.
- • Handwriting, and print in a font that cannot be identified, cannot be redrawn, so the edit is refused.
- • If the new text would touch a stamp, signature or line, MythosPDF refuses instead of smudging it.
- • Text is read in English, so other scripts are not editable on scans yet.
Questions people ask
+Do I need to convert the scan to Word first?
No. MythosPDF edits the scanned page itself. There is no conversion, so the page keeps its look.
+What if a word cannot be changed invisibly?
You get the exact reason, such as a stamp in the way or a font that could not be identified, instead of a smudged page.
Edits in a WhatsApp document scan scan
- Fix a typo
- Change a word
- Change a name
- Change the date
- Change the year
- Change a phone number
- Change an email address
- Change an address
- Change a price
- Change a quantity
- Change a percentage
- Change a time
- Change a deadline
- Change the company name
- Change a job title
- Change a heading
- Change a product name
- Change a menu item
- Change event details
- Change a version number
- Change a website address
- Change a document title
- Change the greeting
- Make a scan searchable
- Copy text from a scan
- Search a scanned PDF
- Make a scan smaller
- Rotate scanned pages
- Remove blank pages from a scan
- Combine scans into one PDF
- Crop scanned pages
- Add page numbers to a scan
- Watermark a scan
Scanned with WhatsApp document scan
WhatsApp document scan scans
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