Back to tools
DeveloperClient-sideNo signup

Base64 Encoder/Decoder

Encode plain text to Base64 or decode Base64 strings for quick inspection and payload testing.

Core processing runs in your browser. Keep the tab open until downloads or copied results are complete.
Loading workspace...

Guide

Usage, privacy, and related tools

Best for

  • API payload prep
  • Encoded string inspection
  • Inline data experiments

Privacy

Encoding and decoding happen in-browser, so temporary values and internal strings do not leave your device.

Quick tips

  • Base64 is not encryption.
  • Decode before editing, then encode again after changes.
  • Use JSON Formatter after decoding JSON-like payloads.

How to use this tool

  1. Paste the text or Base64 string.
  2. Choose encode or decode.
  3. Copy the output once it validates.

Common questions

Is Base64 secure?

No. Base64 is an encoding format, not encryption. Anyone can decode it.

Why use a client-side Base64 tool?

It keeps test strings, headers, and temporary payloads inside your browser.

Related tools

URL Encoder/DecoderEncode and decode URLs for safe transmission and storageJSON Formatter & ValidatorFormat, minify, validate, and optionally sort JSON keys locallyJWT Decoder & InspectorDecode JWT headers and payloads locally without sending tokens anywhere