Free Base64 Encoder

🟢 Runs Locally — verified: your files are processed in this browser. No uploads.

Turn any text — Arabic, emoji, accented letters — into standard UTF-8 Base64, instantly and privately.

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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 your text

    Messages, API payloads, config secrets — anything you want encoded.

  2. 2

    Watch it encode

    Output updates live using proper UTF-8 bytes, so non-Latin scripts never turn into mojibake.

  3. 3

    Copy or download

    Grab the encoded string or save it as a .txt file.

Key features

InputBase64 output
HelloSGVsbG8=
مرحباUTF-8 bytes encoded correctly
👋 🌍Multi-byte emoji handled losslessly
line one\nline twoLine breaks preserved inside bytes

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. Visit counting (see the note at the foot of this page) is separate from your text and never receives it.

  • No uploads, no accounts, no sign-up
  • Your text is processed locally in your browser and never stored.
  • 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 — no request ever carries your text. You will also see the Google Analytics request that counts the visit; it carries a page view and never anything you typed, and no cookie or identifier is stored until you accept analytics.

Frequently asked questions

Why does Base64 matter for non-English text?
Classic btoa() breaks on characters outside Latin-1. This encoder goes through UTF-8 bytes first, so Arabic, Cyrillic and emoji survive intact.
What is the = padding?
Base64 pads incomplete byte groups with = signs — output stays standard and interoperable.
Can it encode binary files?
This tool is text-oriented; feed it pasted text content and it encodes exactly those characters.
Is anything uploaded?
Never — encoding happens entirely inside your browser tab.

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Your text stays in your browser and is not uploaded. We use Google Analytics to count visits; until you choose it runs without cookies and stores nothing on your device. · Privacy Policy