Base64 Encode/Decode

Encode everything.

Base64 encode and decode. Text and files. On-device.

Input
Output
No upload
Works offline
No idea what's in your data

Need to encode thousands of files? The offline bundle handles batches with no size limit. $99 once.

Get Bundle →
// How it works

Three steps. Zero uploads.

01
Paste
Paste text or drop a file. It stays on your device.
02
Convert
fwip encodes to Base64 or decodes from Base64 in your browser. Toggle direction with one click.
03
Copy
Copy the result or download the decoded file. Nothing was ever uploaded.
// Why this is different

Your data never leaves your machine.

Most online Base64 tools send your data to a server for encoding. Your text and files pass through systems you don't control.

fwip works differently. The encoder runs entirely in your browser. Your data 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.

// Questions

Frequently asked.

How do I encode text to Base64 without uploading?▾
Paste your text into fwip. It encodes to Base64 entirely in your browser. Your data never leaves your device.
Can I decode Base64 back to text?▾
Yes. fwip detects whether the input is Base64 and decodes it automatically. Works with text and file data.
Does fwip support file-to-Base64 encoding?▾
Yes. Drop any file and fwip converts it to a Base64 string. You can also decode a Base64 string back to a downloadable file.
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Offline. No browser. No internet. No excuses.
$15
This tool
  • Base64 Encode/Decode · offline
  • Batch processing
  • No file size limit
  • 3 devices · one payment
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$99
Complete suite
  • All 200+ tools · offline
  • No file size limit
  • No daily use limit
  • 3 devices · one payment · updates included
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One-time payment · 3 devices · Updates included · Mac + Windows + Linux