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Base64 Encoder — Convert text & files to Base64 instantly

Encode strings or small files to Base64 in your browser. Copy results with one click, generate data: URLs for embedding, and preview encoded output — fast, private and reliable.

Open encoder Open dashboard

• Encode text to Base64 and copy to clipboard
• Upload small files → Base64 (data URL preview)
• Client-side processing for privacy
• Quick use for embedding images/fonts in data URLs

What is Base64?

Base64 is a binary-to-text encoding scheme that converts arbitrary binary data into ASCII text using a 64-character alphabet. It's commonly used to embed small binary assets inside text-based formats (HTML, CSS, JSON) via data URLs, or to safely transmit binary data over protocols that are text-only.

Quick example

Input:
Hello, world!

Output (Base64):
SGVsbG8sIHdvcmxkIQ==

Data URL (image/png):
data:image/png;base64,iVBORw0K...

Tip: use data URLs for small icons or inline fonts — avoid large files to keep HTML/CSS size reasonable.

Common uses

Base64 is used to embed small images (icons), include fonts inline, pass binary data in JSON, encode credentials for transport (not secure encryption!) and create data: URLs for quick previews.

Features & benefits

Client-side encoding: text and small files are encoded in the browser — nothing is uploaded by default.
File upload: convert small images or files to Base64 and preview their data URL.
One-click copy: copy encoded string or data URL (with proper prefix) to clipboard instantly.
Safe for embedding: generate data URLs for quick inline usage when appropriate.
Export & history: dashboard users can save encodings and export a log of results.

How to use — quick steps

1. Enter or paste text

Type or paste the string you want to encode.

2. Or upload a file

Choose a small file (image, font snippet) to convert to Base64 data URL.

3. Encode & copy

Click encode, then use the Copy button to paste the result into your project or ticket.

Who uses Base64 Encoder — real examples

Frontend developers

Embed small icons or fonts as data URLs during prototyping or when bundling assets is inconvenient.

Support & QA

Share encoded payloads in bug reports or reproduce client-submitted data easily.

Content editors

Quickly generate small inline images for email templates or CMS fields that accept text only.

Frequently asked questions

Is Base64 secure?

No — Base64 is not encryption. It only encodes data. Anyone can decode it easily. Use proper encryption for secrets.

Can I encode files?

Yes — small files can be encoded to Base64 and previewed as data URLs. Avoid encoding very large files (bloat).

Where are uploads processed?

By default small uploads are processed client-side (in your browser). Dashboard batch jobs may use server-side processing with your consent.

Ready to encode?

Use the demo above to encode text or small files. Sign up to save encodings and export results.

Pricing

Free demo available. Premium plans unlock file history, bulk encoding, larger file limits and export options.

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