ScanifyAI

PDF Editing & Annotation · 6 min read

Editing Uploaded PDFs in Real Time: Whiteout Overlays, Full Editable A4 Mode & Direct Preview Typing

Complete guide to modifying existing PDF text, replacing outdated invoice numbers with whiteout boxes, and typing directly inside the live A4 preview.

1. Two Powerful Ways to Edit Any Uploaded PDF

PDF files store text as fixed coordinate instructions rather than flowing word-processor paragraphs. Depending on whether you want to preserve the exact original form background or rebuild the entire document text, ScanifyAI provides two dedicated editing modes inside Edit PDF Studio (?tool=edit-pdf):

  1. Mode 1 — Whiteout & Annotate Existing PDF: Keeps your uploaded PDF’s exact layout, logos, and tables intact. You can add custom Whiteout Text Boxes to cover old dates, amounts, or names and type new text right over them. Click anywhere on the right-hand PDF preview to position your text block or stamp!
  2. Mode 2 — Full Editable A4 Mode (With Direct In-Preview Editing): Uses our Auto AI Text Scanner to extract all text from your uploaded PDF or scanned image into a live editable document. You can even click "Edit Directly in Preview" to type right on the A4 preview sheet.
SettingRecommended valueNotes
Whiteout Box ToggleEnabled (Opaque White Fill)Masks original underlying PDF text cleanly
Click-to-Place on PreviewInteractive X% / Y% CoordinatesClick any spot on the PDF preview to move text or stamp
Multilingual SupportEnglish, Urdu & Arabic RTLZero WinAnsi encoding errors on export

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