Stop wrestling with messy exports. Fieldnotes CSV Cleaner & File Organizer cleans messy CSVs and organizes related files in one offline workflow, using a zero-dependency Python script that runs inside a browser page. You unzip, open the HTML file, and get tidy data plus consistent filenames without installs, subscriptions, or network access.

Clean CSVs that actually load

• Supports .csv, .tsv, and .txt inputs
• Auto-detects field separators like comma, semicolon, tab, and pipe
• Handles common encodings, including UTF-8 with BOM, UTF-16, and a Windows-1252 fallback
• Fixes headers, trims extra whitespace, and removes duplicate rows
• Lets you override delimiter and encoding when the preview shows the wrong split

Organize files with a reusable date prefix

• Batch-renames selected files in one pass
• Adds a date prefix in a consistent format so folders stay sortable
• Keeps an easy-to-repeat naming pattern for future exports

Offline by design

• Runs without pip installs or external dependencies
• Processes files locally in your browser, no uploads to a server
• Reads your originals as read-only and writes downloads as new copies

Buy Fieldnotes CSV Cleaner & File Organizer if you want clean data and tidy filenames fast, especially when exports arrive in mixed formats, inconsistent separators, or messy headers. You get a practical automation tool that stays on your machine and saves time every time you export.