Remove Duplicate Lines
Paste text and remove all duplicate lines while preserving order.
Also try: Text Case Converter · Word Counter
Using AI? Optimize your prompts first.
Better prompts = better output = fewer revisions.
Try the Prompt Optimizer — Free →You might also like
Remove Extra Spaces
Remove extra spaces, tabs, blank lines, and trailing whitespace. Clean up messy text. Free.
Text Line Sorter
Sort text lines alphabetically, reverse, by length, or randomly. Remove duplicates while sorting. Free.
Word Counter
Count words, characters, sentences, paragraphs, reading time, speaking time, and estimated AI tokens. Free, instant, no signup.
AI Prompt Optimizer
Paste any AI prompt and get an optimized version using the ICCSSE framework. Works for ChatGPT, Claude, and Gemini. Free, no signup, runs in your browser.
100% client-side where applicable — your files and inputs stay in your browser. Nothing is uploaded to HundredTabs servers for these tools.