Redact Phone Numbers from PDFs
Detect and mask phone numbers in international and national formats — including those split across lines or with mixed separators.

Try for free

Select the PII types to redact, then upload your document. No account required.

Select information types to redact

Drop your file here

PDF, JPG, or PNG (max 5MB)

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*Security first: Your files are securely processed and deleted immediately. Create an account to manage your files, PII and retention settings. This demo only processes the first page. Create an account for full document processing.

Why phone numbers are tricky to redact manually

Phone numbers appear in dozens of formats: +41 21 555 12 34, (021) 555-1234, 021/555.12.34, even split across columns or footers. A "find and replace" approach misses most of them. Our detector validates against international (E.164) and national formats for major regions before masking.

Where phone redaction matters

Phone numbers are personal data under GDPR and often a direct contact channel that bad actors target.

  • Tenant applications and rental contracts (real estate)
  • Patient intake forms and discharge summaries (healthcare)
  • Witness statements and court documents (legal)
  • Client engagement letters and invoices

Detection accuracy across formats

Beyond regex pattern matching, we validate detected numbers against country-specific formats. This dramatically reduces false positives (e.g., 4-digit page numbers or zip codes that look phone-shaped).

How it works

  1. 1

    Upload your PDF(s)

    Single file, batch, or scanned documents.

  2. 2

    Enable "PhoneNumber" detection

    Combine with other categories for one-pass processing.

  3. 3

    Review in Studio if needed

    For edge cases (extension numbers, unusual formats), draw quick manual masks.

  4. 4

    Download the redacted output

    Numbers are permanently rasterized over — no recovery possible.

For real-estate agencies

Tenant background packs often contain landlord, employer, and reference phone numbers. Redact them before archiving or sharing with third parties.

Frequently asked questions

Does it handle Swiss / French / German formats?

Yes — common European national formats are supported alongside E.164. Phone validation reduces false positives.

What about extensions like "555-1234 ext. 22"?

The base number is detected; the extension may or may not be included depending on layout. Add a manual mask in Studio if needed.

Can I redact only mobile numbers and keep landlines visible?

Not automatically — but you can review detections in the Studio and remove the masks you do not want.

Ready to redact PII with simplicity?
Gain accuracy and speed compared to Adobe Acrobat and other redaction tools.