Private Text Encoder & Decoder

ROT13. Binary. Morse.

Encode everything. On-device.

Input
Output
No upload
Works offline
No tracking

Need text encoding offline? The offline bundle handles unlimited operations. $49 once.

Get Bundle →
// How it works

Three steps. Zero uploads.

01
Paste
Enter your text, encoded string, or data.
02
Encode or Decode
Choose the format: Base64, URL encoding, or HTML entities. Click to convert.
03
Copy
Result is ready. Copy the encoded or decoded output.
// Why this is different

Encode and decode without exposing your data.

Online encoding tools typically send your data to a server. fwip encodes and decodes entirely in your browser. Your API keys, tokens, and sensitive strings stay on your machine.

fwip works differently. The processing engine runs entirely in your browser. Your text is read from your device, processed on your CPU, and the result is saved back to your device. No server is involved. We literally cannot see your file.

No server processing

Everything runs on your device using WebAssembly. Your file never touches a network.

No account required

Drop a file. Get a result. No sign-up, no email, no password.

No subscription

Free in the browser. $99 once for the offline bundle. That's it. Forever.

Works offline

The desktop version works with no internet connection at all.

Use it free in your browser. Own it offline for $15. No subscription. Yours.
// How fwip compares

fwip vs the rest.

fwipBase64Encode.orgURLDecoder.orgCyberChef
Upload requiredNoNoNoNo
Account requiredNoNoNoNo
Price$15 / toolFree (ad-supported)Free (ad-supported)Free (open source)
Files leave deviceNeverYesYesNo (self-hosted)
Works offlineYesNoNoYes (self-hosted)
Batch processingOffline bundleNoNoYes
// Questions

Frequently asked.

What is Base64 encoding?▾
Base64 converts binary data into ASCII text using 64 characters. It's used to embed images in HTML, encode email attachments, and pass data through text-only channels.
What is URL encoding?▾
URL encoding replaces special characters with percent-encoded values (like %20 for a space). It ensures URLs are valid and don't break when they contain special characters.
What are HTML entities?▾
HTML entities replace reserved characters like <, >, and & with codes like &lt; &gt; and &amp; so they display correctly in web pages instead of being interpreted as HTML.
Is my data safe when I encode it here?▾
Yes. All encoding and decoding happens in your browser. Your data is never sent to a server. You can verify this in your browser's network inspector.
Can I decode Base64 offline?▾
Yes. The offline version ($15, one payment) handles all encoding and decoding without internet. Useful for handling sensitive data in secure environments.
// Related tools

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Offline. No browser. No internet. No excuses.
$15
This tool
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  • Batch processing
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  • 3 devices · one payment
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Complete suite
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One-time payment · 3 devices · Updates included · Mac + Windows + Linux