CSV Cleaning
CSV files are one of the most common ways prospect data moves between tools, and one of the easiest places for bad data to hide. This category covers how to clean CSV files before importing into CRMs like HubSpot and Salesforce, how to remove duplicate contacts, how to standardise formatting, and how to validate emails and phone numbers before outbound.
Whether you're preparing a list for import, merging exports from different tools, or fixing a messy file before it reaches your CRM, these guides walk through the practical steps.
Where to start
- Evaluating tools? Read Best CSV cleaning tools for sales and RevOps
- Cleaning for HubSpot? See How to clean a CSV before a HubSpot import
- Removing duplicates? Read How to remove duplicate contacts from a CSV
- Cleaning a lead list? See How to clean a lead list before CRM import
DataFixr CSV cleaning workflows
See how DataFixr supports CSV cleaning, deduplication, and HubSpot import preparation.
- CSV Cleaning Tool for CRM Imports and Sales Data - how DataFixr handles CSV cleaning before CRM import
- HubSpot Import Cleaning Before You Upload a CSV - a focused workflow for preparing CSV files for HubSpot
Guides in this topic
- Best CSV Cleaning Tools for Sales and RevOps Teams
How to compare CSV cleaning tools on deduplication, validation, field mapping, and CRM import readiness.
- How to Clean a CSV File Before Uploading It to HubSpot
A practical checklist for cleaning a CSV before importing into HubSpot - duplicates, field mapping, email validation, and lifecycle stages.
- How to Clean a Lead List Before Importing It Into Your CRM
Step-by-step lead list cleaning covering deduplication, formatting, validation, and field mapping for any CRM.
- How to Remove Duplicate Contacts From a CSV or CRM Export
How to find and remove exact and fuzzy duplicates from CSV files before they create problems in your CRM.
- How to Join CSV Files Without Creating Duplicate Records
How to safely merge CSV files with better join keys, merge rules, and duplicate prevention before CRM upload.
- How to Standardise Company Names at Scale
How to normalise company names across CSVs and CRMs so matching, deduplication, and segmentation stay reliable.