From messy files. To work you trust.
SmartDataAI is a set of 11 free, browser-based data cleaning tools for sales teams, recruiters and marketers: a CSV cleaner, duplicate remover, email extractor, JSON-to-CSV converter, data health score and more. Paste or upload an Apollo, Hunter, HubSpot or Salesforce export, review every change, and download a file you can import with confidence. Your file never leaves your computer — no signup, no limits.
Everything You Need to Clean Your Data
Pick a tool and start instantly. All processing happens on your device — your data never leaves your computer.
Data Workspace
One guided flow: import a file, see its quality score, pick the fixes, review every change with undo, and export with an audit trail.
Open Workspace → NEWVerify a Cleaned File
Got a cleaned file and a change log? Check that the log explains every removed row and changed cell. Runs in your browser.
Open Tool → NEWData Health Score
How healthy is your data? Upload any CSV, get a 0–100 quality score in 10 seconds — then challenge your team to beat it.
Open Tool → FREECSV Cleaner
Upload a CSV or Excel export, remove junk and duplicate rows, standardize phones, dates and names, and download a change report.
Open Tool → FREEDuplicate Remover
Find and remove duplicate rows from lists, emails, and exported datasets in one click.
Open Tool → FREEJSON to CSV
Convert JSON data into clean, spreadsheet-ready CSV format. Handles nested objects automatically.
Open Tool → FREEEmail Extractor
Extract all email addresses from any block of text, HTML, or pasted export content.
Open Tool → FREECompany Domain Finder
Guess likely company website domains from business names — a fast first pass for prospect lists.
Open Tool → FREELead Quality Analyzer
Score leads with transparent, rule-based signals so your team focuses on the best prospects.
Open Tool → FREEICP Generator
Build a structured Ideal Customer Profile from your business description using built-in logic.
Open Tool → FREECold Email Generator
Draft cold outreach emails from proven templates — direct, friendly, or formal tone.
Open Tool →Built for the Outbound Workflow
We don't compete with Hunter, Apollo, or Snov — we sit downstream from them, cleaning what they export.
Export from your data provider
Pull your list from Hunter, Apollo, Snov, or anywhere else — as a CSV or plain list. Their free tiers find the data; we make it usable.
Clean it in SmartDataAI
Paste it into the CSV Cleaner or Duplicate Remover. Empty rows, bad spacing, and duplicates disappear in seconds — without uploading your list anywhere.
Upload to your sequencer
Download the clean file and push it straight into your outreach tool. Fewer bounces, better deliverability, no wasted credits.
See the Result Before You Trust the Tool
Ten guides, each with a fictional sample file, the real before and after, and a verified change log. When a file needs a person, fixed-price services start at $19.
Clean an Apollo CSV Export
The same contact exported from two saved searches, so the row appears twice.
Read the guide →HubSpot Import Cleanup
The same email twice with different capitalization, which creates confusion about which row wins.
Read the guide →Remove Duplicate CRM Contacts Safely
Exact repeats from importing the same file twice.
Read the guide →Clean a CSV Without Losing Leading Zeros
ZIP codes that start with zero.
Read the guide →Turn Data Skills Into Freelance Income
Learn free data tools, practice with sample projects, and start offering data cleanup services to real clients.
Learn a Skill
Step-by-step guides to cleaning contact lists and preparing CRM imports.
Read the guides →Practice on Sample Files
Three fictional projects that open straight in the CSV Cleaner.
Try a project →Package Your Service
Suggested packages, service descriptions, and a delivery checklist.
See packages →Need It Done for You?
Businesses can ask our team for a quote instead. Optional and separate from the free tools.
Hire data help →No income guarantees. The guides teach a skill; results depend on you and your market.
Your Data Never Leaves Your Computer
B2B lists are sensitive. Every big platform makes you upload them. We built SmartDataAI the other way: everything runs locally in your browser.
100% Browser-Side
No uploads, no servers, no storage. Your data is processed on your device and stays there.
No Signup, No Limits
Big platforms gate free tiers behind accounts and monthly credit resets. Ours just work — unlimited.
Instant Results
No queues, no waiting. Clean thousands of rows in milliseconds, right on your device.
Made for Dirty Exports
Built for the last mile: the messy Apollo/Hunter CSV that needs cleaning before it can be sent.
Frequently Asked Questions
Built a data tool or service?
You can apply for a free listing on SmartDataAI — a dedicated profile page for your tool, service, or agency, reviewed by hand before anything is published.