DievioFree Contact Data Tools
Extract, compare, map and split your own contact files. Keep a useful list without uploading it.
8 tools available
Clean contact data
Extract, compare, map and split your own contact files. Keep a useful list without uploading it.
Email Extractor
Extract unique email addresses from pasted text, HTML source or a local text file. Copy the extracted list or download a CSV of addresses and domains.
Use free tool →Email List Cleaner
Remove duplicate email entries, separate malformed addresses and label common personal, role and disposable-domain addresses. Export clean and review lists separately.
Use free tool →Email List Compare & Suppression Tool
Compare two email lists to find shared addresses, entries unique to each list and contacts to keep after suppressing list B. Export each group.
Use free tool →Domain Extractor
Extract domains from URLs, email addresses and pasted text. Choose hostnames or registered domains, remove common personal-email providers and export a unique list.
Use free tool →Contact CSV Column Mapper
Map the columns in any contact CSV to a consistent first name, last name, email, company, title, phone and domain format. Review missing fields before exporting.
Use free tool →CSV Splitter
Split a CSV by row count or by the value in a column. Preserve headers, quoted commas and multiline cells, then download each part separately.
Use free tool →Phone Number Validator & E.164 Formatter
Check phone-number format against international numbering metadata and convert valid-format numbers to E.164. Process one number or a newline-separated list.
Use free tool →Lead List Quality Audit
Audit your own CSV for missing contact fields, duplicate emails and malformed addresses. See which rows need attention before importing or preparing outreach.
Use free tool →