What is the XOR Cipher?
The XOR Cipher is a free online security tools from Markvibe. Encrypt or decrypt text with a repeating XOR key. It runs entirely in your browser — your data never gets uploaded — and works on desktop, tablet and mobile with no sign-up.
Reviewed by The Markvibe Team · Last updated 2026-06-28
Example
A worked example so you know exactly what to expect.
Input
(your input goes here)
Output
(the XOR Cipher runs in your browser and shows the result instantly)
How to use XOR Cipher
- 1Open the XOR Cipher above on MarkVibe — it loads instantly with no sign-up.
- 2Enter or paste your input into the XOR Cipher field.
- 3Adjust any options to control exactly how XOR Cipher produces the result.
- 4XOR Cipher runs locally in your browser and shows the result immediately.
- 5Copy the output to your clipboard or save it, then share the XOR Cipher link with anyone.
Why use our XOR Cipher
- ✓ 100% free XOR Cipher — no sign-up, no watermark, no hidden limits
- ✓ Runs entirely in your browser so your data never leaves your device
- ✓ Blazing-fast results — built for speed by Markvibe
- ✓ Mobile-friendly: use XOR Cipher on phone, tablet, or desktop
- ✓ One of 184+ security tools utilities under one roof
- ✓ Privacy-first: no tracking of inputs, no accounts, no ads in the tool area
XOR Cipher — frequently asked questions
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