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ONLINE TOOL

Anonymize / pseudonymize CSV & Excel

Detect sensitive columns, explicitly choose which ones to transform, then export a CSV/TSV/XLSX copy using masking, pseudonyms or HMAC.

Local processingNo account required
CONCRETE EXAMPLE

HR test export

BEFORE
Name · email · phone · IBAN · team
→
AFTER
Person_A82… · person_a82…@example.invalid · TEL_… · IBAN_… · team unchanged
PRIVACY

Your data stays in the browser

Processed content is not uploaded to WorkToolset. Required libraries may be loaded by the site, but the file stays in the browser.

GOOD TO KNOW

Limitations to know

  • Detection is guidance and does not replace a privacy inventory or business knowledge: no unchecked column is transformed.
  • Macro-enabled/signed XLSX files are excluded; formulas in selected columns are preserved and must be reviewed.
HOW IT WORKS

A straightforward workflow.

  1. 1Prepare the required input and choose useful options.
  2. 2Review previews, warnings and limitations before export.
  3. 3Download a new copy or report: the original stays unchanged.
PRIVACY

Frequently asked questions

Are my files uploaded to WorkToolset?

No. This tool runs locally in your browser.

Is my original file modified?

No. WorkToolset creates a new copy or export.

Do I need an account?

No for this free tool. Accounts are mainly used for favorites, presets and future workflows.

RELATED TOOLS

Continue the same workflow

PII×Anonymize tabular data in batchLocally reapply an explicit masking, pseudonymization or HMAC policy to up to 50 CSV/TSV/XLSX files, with ZIP and report.→PIIPDF Privacy ScannerFlag emails, phone numbers, IBANs, identifiers, cards and likely addresses before sharing a PDF.→✦Smart Data CleanerAnalyze Excel/CSV data, detect quality issues and apply explainable fixes before export.→XLSXInspect an Excel workbookInspect workbook sheets and dimensions, then extract a sheet to CSV or XLSX.→
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 WORKTOOLSET PRO

When work becomes repeatable, Pro saves you time.

20×Batch processingPDF · Image · Data · Media
↻Reusable workflowsSteps · settings · templates
PDFProfessional reportsStructured reports · share-ready exports
▣Work continuitySessions · projects · history
100 presets · 50 projects · 20 templates · 500 favorites

Payments, taxes and invoices are managed by Paddle. Your documents are never part of payment data.
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