Duplicate Line Remover - Online Deduplicate Text Tool
Eliminate duplicate lines from text instantly. Keep only unique lines or see which lines were removed. Handy for cleaning email lists and raw data.
UD5 Toolkit
Strip rich text, remove HTML, normalize spacing — get clean, homogenized plain text instantly. 100% Client-Side
A → A), ligatures decompose (fi → fi), superscript/subscript numbers become regular digits, and visually similar Unicode characters are standardized. This is especially useful when dealing with text from international sources, PDF exports, or when you need consistent, database-safe text. Enable "Normalize Unicode" to homogenize these variations.
<tag>) from text that already contains them as literal strings. Think of it this way: pasting from Word into the textarea strips the formatting; enabling "Strip HTML" cleans any remaining markup code in the text itself. Both are complementary for achieving truly clean output.
Eliminate duplicate lines from text instantly. Keep only unique lines or see which lines were removed. Handy for cleaning email lists and raw data.
Convert any text to proper sentence case. Capitalize the first letter after every period, question mark, or exclamation.
Add Vietnamese diacritics to plain text by selecting tones. Remove them from text. For language learners.
Load an audio file and visually trim it by dragging handles on the waveform. Export the trimmed clip. All local.
Click on a fold technique (spiral, crumple) and see a predicted color pattern. Print folding guide.
Easily apply ROT13 cipher to obfuscate or reveal text. A classic letter substitution cipher that works bidirectionally. Purely client-side processing.
Upload a logo to embed in the center of a QR code. High error correction so it still scans. Download PNG/SVG.
Create QR codes with custom colors, gradients, and an embedded logo. Download as high-quality PNG/SVG. Fully local generation.
Automatically adjust brightness, contrast, and saturation of a photo. Click to enhance and download. Canvas‑based.
Create high-quality QR codes for URLs, text, Wi-Fi, and contact info. Customize colors and size. Download as PNG/SVG. No data leaves your device.
Remove all EXIF, IPTC, and XMP metadata from your photos. Strip GPS location. Protect your privacy before upload.
Encrypt and decrypt messages using the classic Caesar cipher with configurable shift key. Fun for puzzles and basic cryptography lessons. Entirely browser-based.
Generate a QR code with a custom icon or logo in the center. Choose error correction level. Download as high‑res PNG.
Apply a classic Caesar shift cipher with any key. Encrypt or decrypt text instantly. Brute force option included.
Enter a UPC or EAN barcode number and validate the check digit. See if it's a real product code. Local calculation.
Convert illuminance units: lux, foot-candle, phot. Useful for lighting design and photography. Quick and free.
Complete a series of visual pattern puzzles and get a fun estimated score. Purely for entertainment. No data collected.
Press any key to see the complete KeyboardEvent properties: key, code, keyCode, modifiers. Indispensable for game & shortcut developers.
Generate a self‑signed X.509 certificate and private key for local development. All created in your browser. No server involved.
Generate a pop signal to determine if speakers are wired in phase. Quick stereo test.
Interactive soprano recorder chart showing which holes to cover for each note. Switch between baroque and German fingering.
Convert popular pet bird ages (budgie, cockatiel, macaw) to human years. Lifespan reference included. Fun educational tool.
Look up quick facts about any country: capital, population, currency, flag, and continent. Static data, fast search. Great for travel and education.
Select meat type and enter weight to get recommended cooking time and temp. Built-in timer with alarm.
Identify countries from their flags. Multiple difficulty levels and regions. Track your high score. Educational geography game. Works offline.
Set a meditation session with singing bowl sounds at start, interval chimes, and end bell. No ads, pure serenity.
Drop a PDF and count the total words, characters, and pages. Text extraction is done locally. Privacy‑friendly.
Paste long text and split it into 2, 3, or 4 balanced CSS columns. Preview and copy HTML/CSS. For magazine layouts.
Add a repeating diagonal text watermark to your images. Adjust opacity, font, and color. Protect your photos locally.
Sort hundreds of lines alphabetically, reverse alphabetically, or by length. Deduplicate option. All local.