Base64 Encoder – Free, Fast & Private

Convert any text, JSON, or image into Base64 encoding instantly. Everything happens directly in your browser — no uploads, no tracking, no servers.

Upload or Enter Data

Drag & Drop files here or click to add

Your file stays on your device — never uploaded anywhere.

or

Encoded Output

Encoded Base64 will appear here.
Need to decode Base64 instead?

Why Use Tools Oasis Base64 Encoder?

Tools Oasis encodes your data safely and instantly, right in your browser. Whether you need Base64 for HTML embedding, email attachments, or API testing — it’s fast, private, and easy.

  • 100% Private: Your data never leaves your device.
  • Instant Results: Encode text or images instantly, with no upload delay.
  • Developer Friendly: Great for data URIs, inline images, and Base64 email attachments.
  • Cross-Platform: Works perfectly on Windows, macOS, Linux, and mobile browsers.
Go Further

Generating strong passwords is the first step. A password manager stores them all securely so you never have to remember them — one master password for everything.

Try NordPass — Free Password Manager

Related Tools You Might Need

Base64 Decoder → URL Encoder/Decoder → Hash Generator → JWT Decoder →

Frequently Asked Questions

What is Base64 encoding?

Base64 is a binary-to-text encoding scheme that converts binary data into a string of ASCII characters. It is commonly used to embed images in HTML or CSS, transmit binary data over text-based protocols like email (MIME) and JSON APIs, and store data in URLs or cookies.

Is Base64 the same as encryption?

No. Base64 is an encoding method, not encryption. It converts data into a different format for safe transport, but it does not protect or secure the data. Anyone can decode a Base64 string back to its original form. For security, use proper encryption algorithms.

Is there a maximum file size I can encode?

There is no hard limit set by the tool. However, since all encoding happens in your browser, very large files (over 50 MB) may be slow depending on your device’s memory and processing power. For most typical use cases — text, JSON, and images — the tool handles them instantly.

Can I encode images to Base64?

Yes. You can drag and drop or upload any image file (JPG, PNG, GIF, WebP, SVG) and the tool will instantly convert it to a Base64 data URI. You can then use the output directly in HTML img tags, CSS background properties, or embed it in JSON payloads.

Is this Base64 encoder free and private?

Yes. Tools Oasis Base64 Encoder is 100% free with no signup required. All encoding happens locally in your browser using JavaScript — no files are uploaded, no data is stored, and no third parties have access to your content.