Base64 File Encoder – Online & Secure
Upload Your File – Get Base64 Conversion Instantly
Looking for more? Check out our Image to Base64, Base64 to Image, Base64 Validator, and URL-Safe Base64 tools.
All encoding happens entirely in your browser—your file never leaves your device, ensuring complete privacy.
Generate a Base64 string from any file instantly—no uploads, no sign up, no data leaves your device. Ideal for APIs, web development, and secure data sharing.
How Our Base64 File Encoder Works
Our local browser tool converts files—including docs, images, binaries—straight to Base64. Base64 encoding is essential for safe data transfer via text-based channels such as APIs, JSON, and XML. All encoding is performed locally, so your data is never uploaded, guaranteeing security and privacy.
Popular Base64 File Encoding Applications
- Embed documents and images in JSON, XML, or HTML as Base64 data easily.
- Transfer files securely via APIs or web/mobile applications in Base64 format.
- Safely transmit files by email or text without corruption using Base64 encoding.
- Debug, inspect, and test file data during software development projects.
- Include files directly in config files or technical documentation using Base64.
How to Encode a File to Base64 Online
- Click the upload area or drag and drop your file to get started.
- The Base64-encoded string appears instantly in the output section.
- Select ‘Copy to Clipboard’ to save your Base64 string.
- Paste the Base64 code wherever needed—in code, APIs, docs, or web projects.
Supported File Types & Features
- Works with any file—images (JPEG, PNG), docs (PDF, DOCX), and binaries included.
- Outputs clean Base64 strings (without data URI prefixes).
- Supports files up to 5MB (may vary based on browser limits).
- Files are never uploaded—everything remains private on your device.
- For large files or batch conversions, consider desktop or command-line options.
Why Choose This Base64 Encoder?
- Convert files to Base64 instantly—no sign up or delays.
- Guaranteed data privacy—all conversion is local and secure.
- Completely free to use for both personal and professional purposes.
- Built for developers and technical users—advanced features included.
- Use on any device: desktop, laptop, tablet, or smartphone.
- Fully compatible across all popular web browsers for hassle-free access.