Free Base64 Decoder

Decode Base64 strings back to readable text — whitespace tolerant, malformed input never crashes the page.

Word Counter

Runs entirely in your browser — paste text and watch the results update instantly. Nothing is uploaded.

100% Client-Side — Your text stays in your browser. Nothing is uploaded.

How to use this tool

  1. 1

    Paste Base64

    JWT payloads, API responses, copied config — any Base64 text.

  2. 2

    Decode instantly

    Line breaks are tolerated and missing padding is repaired automatically.

  3. 3

    Copy the plain text

    Readable output lands in the result panel — copy or download it.

Key features

InputDecoded output
SGVsbG8=Hello
Base64 of Arabic textOriginal Arabic restored
Missing final =Auto-repadded before decoding
!!!not-base64!!!Inline error — page never breaks

Privacy: your text never leaves your browser

Every Toolflect Text Tool is 100% client-side. The moment you type or paste text, it is analyzed by JavaScript running inside this browser tab. Your text is never sent to our servers, never stored in a database, and never shared with any third party or AI service.

  • No uploads, no accounts, no sign-up
  • No cookies or tracking of your text
  • Works offline once the page has loaded
  • Close the tab and your text is gone from memory

You can even verify it yourself: open your browser's developer tools, switch to the Network tab, and type into the tool — the only requests you will ever see are this page's own static files (HTML, CSS, JavaScript). Nothing you type is ever transmitted.

Frequently asked questions

Is missing padding handled?
Yes — input is padded to a valid length automatically before decoding.
What if the string is invalid?
Malformed characters or lengths produce a clear inline alert instead of an exception.
Does it decode binary outputs?
Decoded bytes are interpreted as UTF-8 text; binary payloads render as replacement characters.
Where does decoding run?
Locally, in your browser — no network activity at all.

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