Online Base64 Encoder & Decoder — Convert Text and Files Securely
Need to encode text or files to Base64? Our fast and secure Base64 encoder online makes it simple to
convert any content to or from Base64 format in seconds. Whether you’re a web developer, designer, or student, this free tool
helps you encode and decode Base64 quickly — with no software downloads or account required.
What is Base64 Encoding?
Base64 encoding converts binary data (like images, documents, or any file) into plain text.
This ensures smooth transmission through systems that only support text-based content.
It’s widely used for embedding data into HTML, CSS, and JSON without relying on external file uploads.
Popular Use Cases for Base64 Encoder
Developers embedding images or assets directly in source code.
Email templates that include inline images for reliable delivery.
Data transfer through APIs or web forms that only accept text.
Security-conscious users who want to obscure sensitive binary content.
Students and learners studying data encoding and web technologies.
How to Use the Free Base64 Converter
Paste your text or upload a file using the input box.
Click “Encode” to convert to Base64, or “Decode” to get the original content back.
Copy, download, or share your result instantly.
Use the “Clear” button to reset and start a new conversion.
All processing happens locally in your browser, so your files never leave your device.
Features of Our Base64 Encoder Tool
Instant Encoding/Decoding: Real-time Base64 conversions with a single click.
Supports All File Types: Works for text, images, PDFs, and more.
Local Processing: 100% private and secure — no data upload.
Downloadable Output: Save encoded or decoded files easily.
Mobile Friendly: Works perfectly on phones, tablets, and desktops.
Best Practices for Base64 Usage
Use Base64 for smaller files (icons, small logos) to improve site performance.
Remember that Base64 increases file size by ~33% — avoid using it for large files.
Validate the decoded data before using it in production applications.
Prefer HTTPS when sharing or embedding Base64 data online.
Frequently Asked Questions (FAQ)
Is this Base64 encoder free to use?
Yes, it’s completely free with no hidden charges, usage limits, or sign-ups.
Can I decode Base64 back to normal text or file?
Yes! Just choose “Decode” mode, paste your Base64 string, and click the decode button to retrieve your data instantly.
Is my uploaded data stored anywhere?
No. All encoding and decoding are done in your browser using JavaScript — we never store or transmit your files.
Which file formats are supported?
You can encode or decode most file types including TXT, JPG, PNG, PDF, and DOCX.
Can I use this on mobile?
Yes. The Base64 converter works smoothly across all devices and modern browsers.
Start Encoding Now
Try our online Base64 encoder and decoder now to convert text, images, or files securely in seconds.
It’s lightweight, private, and always free — perfect for developers, students, and everyday users.