Fix Lowercase Letter 'i' Disappearing After PDF Redaction
Question details
Lowercase letter 'i' characters disappear from the text after applying redactions to a PDF document.
- Product
- PDF Editor
- Device & OS
- not provided
- Scenario
- Applying redaction tools to securely remove sensitive information from a PDF file.
- Observed behavior
- All lowercase 'i' characters vanish from the document's visible text upon applying the redaction, compromising document readability.
Always create a backup copy of your original PDF before applying redactions or making font changes to ensure you do not lose the original data.
Use Redaction Preview and Test Font Rendering
Verify if the issue is caused by a specific font or a rendering defect using the redaction preview tool.
Open the backup copy of your PDF in your PDF editor (such as Adobe Acrobat).
Select the Redact tool and mark the text you intend to remove.
Hover over the marked text to preview how the redaction will look. Check if the lowercase 'i' characters are visible in the preview.
Apply the redactions and perform a text search for words containing the letter 'i' to determine if the text was completely deleted or merely rendered invisible.
Flatten or Replace the Affected Font
Change the document's font or flatten the PDF to resolve embedded font conflicts during redaction.
Securely Redact PDFs without Text Errors in WPS Office
Avoid font rendering bugs and disappearing text issues by using WPS Office. Its built-in PDF Editor provides a reliable, secure redaction tool that permanently removes sensitive data while preserving the rest of your document formatting perfectly.
- 1. Open PDF in WPS Office: Launch WPS Office and open the PDF document you need to redact.
- 2. Access Redaction Tools: Navigate to the 'Protect' tab on the top ribbon and select the 'Redact' tool.
- 3. Mark Text for Redaction: Click and drag to select the sensitive text or images you want to permanently remove.
- 4. Apply Redactions: Click 'Apply Redactions' to finalize the process. The marked content will be securely erased without affecting surrounding text.
Frequently Asked Questions
Why do specific letters disappear when editing or redacting a PDF?
This typically occurs due to corrupted embedded fonts or rendering bugs within the PDF software. When the software attempts to rewrite the text layer after redaction, unsupported or damaged fonts can cause certain glyphs, like the lowercase 'i', to drop out.
Is it safe to just draw black rectangles over text instead of using a redaction tool?
No. Drawing a black shape over text only hides it visually. The underlying text remains in the document's code and can be easily copied or read by search engines and text-extraction tools. Always use a proper redaction tool to permanently delete the data.
Does printing to PDF solve redaction font issues?
Yes, 'printing to PDF' flattens the document, converting text and fonts into a single image layer. This bypasses embedded font errors, allowing you to safely apply redactions to the flattened document, though you may need to perform OCR to make the text searchable again.
Can I undo a redaction after saving the PDF?
Once a redaction is applied and the file is saved, the information is permanently removed from the document and cannot be recovered. This is why it is crucial to always work on a copy of your original file.
