TXT and CSV
Remove Duplicates From TXT or CSV Files
Drop or upload a TXT, CSV, log, Markdown, or JSON text file and dedupe its contents locally in your browser.
TXT and CSV
A local TXT and CSV duplicate remover
Made for file-first workflows
Use this page when the duplicate content lives in a TXT, CSV, log, Markdown, or JSON text file rather than directly on your clipboard.
No upload pipeline
The browser reads the file text locally, then the same dedupe engine produces output you can copy or download.
Local file dedupe
Drop a file
Use the input card or upload button. File text is read by your browser.
Choose delimiter
Use newline for most TXT files, or switch to comma, tab, or custom delimiters.
Download output
Save the cleaned content as deduplicated.txt.
TXT dedupe FAQ
Are uploaded files sent to a server?
No. File reading and deduplication happen locally in your browser.
What file size is supported?
The current tool accepts files up to 10 MB each to keep browser processing responsive.
Popular tools
Open the duplicate remover for a specific task
These pages use the same browser-based tool, with presets and guidance tuned for common duplicate-removal tasks.
Duplicate remover
Duplicate Remover Online
Paste text, lists, or file contents and remove repeated items in your browser. Start with line deduplication, then adjust delimiters, sorting, case handling, or duplicate-only output when needed.
Line dedupe
Remove Duplicate Lines Online
Clean repeated lines while preserving the original order. This preset is tuned for newline-separated text, logs, code snippets, and pasted lists.
List dedupe
Remove Duplicates From a List Online
Clean comma-separated lists, pasted spreadsheets, tags, IDs, and short item lists. This preset starts with comma splitting and trims extra spaces automatically.