Text Encryptor
Encrypt plain text into secure ciphertext with this free online tool. It is essential for privacy advocates, developers, and anyone sending sensitive information over insecure channels. Use it to protect messages, passwords, and confidential data before transmission.
How the Text Encryptor works
- 1
Type the message and password
Enter your secret text and pick a strong password. There is no algorithm menu — the tool always uses AES-256-GCM with a freshly generated random salt and IV.
- 2
One blob carries everything
Your password plus a random salt derive the key, the browser's Web Crypto engine encrypts, and the output is a single Base64 string packing salt, IV, and ciphertext together. Send both the blob and the password through separate channels.
- 3
Expect a different result every time
Encrypting the same text twice never yields the same output — that randomness is deliberate and makes the ciphertext harder to analyse. The recipient only needs the Text Decryptor with your password.
Real-world examples
Sharing a Wi-Fi Password
Input: The guest network password, plus a passphrase agreed over the phone
Results: One Base64 blob to paste into chat — meaningless without the passphrase
Use case: Hosts hand out credentials without posting them in plain view of the group.
Randomness Check
Input: The same short note encrypted twice with one password
Results: Two completely different blobs, both decrypting to the same text
Use case: Curious users confirm that fresh random salt and IV are really being used each run.
Storing Notes Safely
Input: A private reminder, encrypted before pasting into a shared document
Results: A blob that reads as noise to anyone browsing the file
Use case: Writers keep drafts in cloud notes that roommates or colleagues can open harmlessly.
Password Strength Matters
Input: Identical messages encrypted once with "1234" and once with a long passphrase
Results: Two valid blobs — but only the long passphrase makes guessing impractical
Use case: Security trainers demonstrate why the password, not the cipher, is usually the weak link.
Cross-Device Handoff
Input: A blob generated on a phone, decrypted later on a laptop
Results: The same message appears on any device holding the password
Use case: Travellers move itinerary details between machines without emailing plaintext.
Text Encryptor FAQ
Do I need to create an account?
No, you can use this tool immediately without signing up or logging in.
Is my data secure and private?
Yes, all processing happens directly in your browser, so no data is ever sent to our servers.
Does it work offline?
Once the page is loaded, the core logic works offline since it runs locally in your browser.
Is there a character or size limit?
There is no strict limit, but extremely large inputs may depend on your browser processing capabilities.
Does it support multiple languages?
The interface is in English, but it fully supports standard characters and inputs from all global keyboard layouts.
How is it different from similar tools?
The encryption runs entirely in your browser as local JavaScript — there is no account step and nothing is uploaded, and every run generates its own fresh salt and IV automatically.
What is the technical working principle?
A random 16-byte salt and 12-byte IV are generated in your browser, your password plus the salt derive an AES-256 key, and Web Crypto encrypts with AES-GCM. The output packs salt, IV, and ciphertext into one Base64 string.
Will the same message always encrypt to the same blob?
No, deliberately. Fresh random values go into every run, so identical text and password still produce different output each time. Matching blobs would actually be a weakness worth worrying about.
What is a common use case?
Users use it daily to encrypt sensitive text messages or passwords before sending them over unsecured chat applications.
Why use the Text Encryptor?
- Instant Processing: Get immediate results without waiting for server responses or page reloads.
- Zero Registration: Start working right away without the hassle of creating an account.
- Complete Privacy: Your inputs are processed on your device and are not uploaded anywhere.
- User-Friendly Interface: Enjoy a clean, distraction-free layout designed for quick and easy use.
- Cross-Platform Compatibility: Works seamlessly on desktops, tablets, and mobile web browsers.
- No Software Installation: Access the tool directly from your browser without downloading anything.
- Real-Time Updates: See the output update automatically as you type or modify your text and key.
- Completely Free: Access all features without any hidden fees, subscriptions, or premium upgrades.
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