Text Obfuscator & Manipulator

Sometimes text needs to be made deliberately unreadable — not encrypted, just scrambled enough for the moment: a spoiler in a chat, a puzzle answer that should not be readable at a glance, a classroom demonstration of the classic ROT13 cipher. This tool applies seven transformations to any text you paste: reverse characters, reverse word order, reverse line order, ROT13, scramble letters within words, scramble everything, and convert to binary.

Most modes are reversible, and each button explains how. ROT13 shifts every letter 13 places around the 26-letter alphabet, so applying it a second time restores the original — the property that made it the internet's traditional spoiler-guard. The three reverse modes are also self-inverting: run the output through the same mode to get your text back. The two scramble modes shuffle randomly and cannot be undone, which makes them useful for generating gibberish placeholder text that keeps the shape of real content. Binary mode shows each character's code as eight binary digits — a neat teaching aid for how computers store text.

To be clear about what this is not: security. Every transformation here is trivially reversible or purely cosmetic, by design. For anything that must stay confidential, use real encryption; for hiding a punchline, a quiz answer, or a riddle solution, this is exactly the right size of tool. Processing happens in your browser and nothing you type is uploaded.

Each mode is a small, transparent text operation applied in your browser.

• Reverse Chars splits the text into characters and joins them in reverse order.
• Reverse Words splits on whitespace while keeping the spacing, then reverses the sequence — words stay intact, their order flips.
• Reverse Lines splits on line breaks and reverses the list of lines.
• ROT13 replaces each letter A–Z or a–z with the letter 13 positions later, wrapping around the alphabet. Because 13 is half of 26, the same operation both encodes and decodes. Digits, punctuation, and spaces pass through unchanged.
• Scramble Words shuffles the letters inside each word with a random permutation (a Fisher–Yates shuffle) while leaving the spaces between words alone. Scramble All shuffles every character in the text, spaces included.
• To Binary takes each character's code and writes it in base 2, padded to at least eight digits, with spaces between characters.

This is obfuscation, not encryption: every mode is either self-reversing or purely cosmetic, and anyone can decode ROT13 or a reversal in seconds. There is no decode mode for binary output and no way to undo the random scrambles. ROT13 only transforms the letters A–Z and a–z, so text in other scripts passes through it unchanged. Multi-symbol emoji sequences may not survive scrambling intact. None of the modes should be used to protect passwords, personal data, or anything genuinely sensitive.

All modes are implemented client-side. Character reversal iterates the string by code points, which keeps most emoji intact. ROT13 uses a character-code shift with wrap-around on the A–Z and a–z ranges only. The scrambles use a Fisher–Yates shuffle driven by Math.random, so they are not cryptographic and produce a different result every run. Binary mode emits each UTF-16 code unit in base 2 padded to a minimum of eight digits; characters outside the Latin-1 range therefore produce more than eight digits.

Which modes can be undone?

Forum and chat users hiding spoilers, puzzle makers and teachers demonstrating classic ciphers and binary encoding, writers who need gibberish that mimics real text, and anyone after a quick playful text flip for a post or username. It is intentionally not for anyone needing real confidentiality — that calls for encryption, not obfuscation.