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- Free
- No sign-up
- Works on any device
Create a QR code for a link, Wi-Fi, WhatsApp, contact and more, or read one from a photo.
- Free
- No sign-up
- Works on any device
Fill in the details to see your QR code.
PNG for phones, chats and websites. SVG and PDF stay sharp at any size, which is best for printing. Tip: point your phone camera at the preview to test it.
3. Style (optional): colors, dots, logo
Choose a photo or screenshot or drag it here
Works with photos of printed codes, screenshots and image files.
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Vigenère cipher encoder, decoder and solver
Encrypt and decrypt with a keyword, or solve a message when you don't know the keyword.
- Free
- No sign-up
- Works on any device
About Vigenère cipher encoder, decoder and solver
The Vigenere cipher shifts each letter by a different amount taken from a repeating keyword, so it hides letter frequencies far better than a single Caesar shift. Encrypt or decrypt with a key, or let the solver estimate the key length and the keyword. Longer texts are easier to solve.
How to use Vigenère cipher encoder, decoder and solver
- Type or paste your text in the box above.
- The result appears instantly as you type.
- Copy the result or download it as a file.
Why use this tool?
- Private: everything happens in your browser. Nothing you enter is uploaded.
- Free, with no sign-up, no watermark and no limit on how often you use it.
- Works on phones, tablets and computers: Android, iPhone, Windows, Mac and Linux. Nothing to install.
- Available in 10 languages.
Also known as
Frequently asked questions
Can I decode Vigenere without the key?
Often yes, if the message is long enough. The solver looks for the repeating key length and then tests letter frequencies. Very short messages leave too little data to be sure.
Is Vigenère cipher encoder, decoder and solver free?
Yes. Vigenère cipher encoder, decoder and solver on Toolipedia is free to use, with no sign-up and no watermark.
Is it safe to use?
Yes. Everything is worked out in your browser, and nothing you enter is sent to our server.
Does it work on my phone?
Yes. It works in any modern browser on Android and iPhone, as well as on tablets and computers. There's nothing to install.
Do I need an account?
No. Just open the page and use the tool. There's no sign-up and no email needed.