Prepare your contact spreadsheet for safe CRM import

Auto-map columns, surface import blockers, auto-collapse matched duplicates, and prepare exportable rows for CRM import.

Runs locally in your browser. Full fix plans, review packs, and clean-contact exports are available.

Accepted inputCSV or XLSX

WorkflowMap, fix, export

ProcessingBrowser-local

Drop your spreadsheet files here

Upload CSV or XLSX files to find CRM import blockers and prepare ready rows for export.

Nothing leaves your device

CSV and XLSX import are supported. Full fix plans and full clean-contact exports are unlocked.

or drop them here

What TrimMyList checks before import

Field mappingSeparate auto-mapped, suggested, and unknown columns

Import riskSpot invalid emails, suspicious phones, and missing required data

Duplicate reviewAuto-collapse clear duplicate matches and leave risky groups for review

ExportDownload a cleaned canonical CSV after review

Features

See how TrimMyList handles duplicate removal, email cleanup, and phone number standardization.

Guides

Read practical workflows for CRM import prep and duplicate cleanup in Excel.