File Tools
File validation and cleaning tools. Validate CSV files, clean email lists, and prepare data files for import. All file processing happens in your browser to protect your privacy and data security.
CSV Validator & Cleaner
Validate CSV structure, detect uneven rows, normalize delimiters, and remove empty rows. Fix broken CSVs and prepare data for import — all locally in your browser.
Email Validator & Cleaner
Validate and clean email addresses. Remove duplicates, normalize casing, validate RFC 5322 format, and export cleaned lists. All processing happens locally in your browser — no data uploaded to servers.