Free Data Tools for Marketing Lists

Clean and prepare marketing and mailing lists: fix spaces and capitals, remove duplicates, join lists, convert formats and mask personal data. Free, in your browser.

The problem

Marketing teams work with lists from forms, events, CRMs and ad platforms. The lists come in different formats and are never clean.

Typical jobs: trim spaces and fix capitals in names, remove duplicate contacts, join a list with a second file on email, change date formats, and convert between CSV and Excel.

Tools that help

Every tool runs in your browser and nothing is uploaded.