Remove Duplicate Lines cleans repeated lines from lists and notes while preserving first-seen order.
Remove Duplicate Lines
Remove Duplicate Lines
Deduplicate multi-line text while keeping order, with case and trim options - fully local.
Loading tool…
Need AI study tools beyond text utilities? Try Studix free today.
No credit card required
What is this?
How it works
1. Paste multi-line text.
2. Choose case, trim, and empty-line options.
3. Click Remove duplicate lines.
4. Copy or download the unique result.
Features
- Keeps first occurrence order
- Case insensitive option
- Trim lines
- Keep or drop empty lines
- Copy and TXT download
Benefits
Clean email lists, vocab lists, and notes without spreadsheet software.
Trust & privacy
Processing stays in your browser. We never see your list.
Frequently asked questions
Yes. The first time a line appears is kept; later duplicates are removed.
Yes. Enable Case insensitive so Hello and hello count as the same line.
Free tools
Browse every free Studix preview — open any tool and try it instantly.
- CSV Generator
Create CSV Online Free
Write columns and text templates, fill rows, preview, then download a CSV offline.
- summarize
Summarize PDF with AI
Upload your textbook chapter, lecture notes, or research PDF and get a focused summary that keeps the ideas that matter — without filler or repetition. Perfect for fast exam review.
- true_false
True/False Quiz from PDF
Upload a sample document and build true/false questions from it in minutes. This demo shows how StudixZone turns your study material into statements with clear explanations — no signup required to explore.
- Hide File in Image
Hide File in PNG
Embed PDFs, ZIPs, or any binary file into a PNG carrier using RGB LSB steganography, then extract it later.
- CSV to Markdown
CSV to Markdown Table
Upload or paste CSV and get a clean Markdown table instantly. Powered by PapaParse, fully local.
- Image Steganography
Hide Text in Images
Embed secret text in PNG pixels with LSB steganography, or extract hidden messages - free and local.
- Extract PDF Pages
Extract PDF Pages Free
Open a PDF, select pages with thumbnails or ranges like 1,3,5-8, and download a new PDF with only those pages.
- Online PDF Viewer
View PDF Online Free
Open any PDF with page navigation, zoom, fit modes, thumbnails, keyboard arrows, and fullscreen - no upload required.
- Word to Markdown
DOCX to Markdown Free
Upload a .docx file and get clean, editable Markdown instantly. Conversion runs locally on your device.
- QR Code Generator
QR & Barcode Generator
Generate large QR or barcodes from any text, or upload an image to decode.
- Merge PDF
Merge PDF Files Free
Combine multiple PDFs, reorder files, pick page ranges, and download one merged document - fully local.
- File to Base64
File to Base64 Free
Upload or drag any file and get a full Data URL or raw Base64 string - free and local.