Encode a PDF as Base64
Select a PDF and generate raw Base64, a complete data URL, formatted JSON or a JavaScript download snippet. The original PDF bytes are preserved.
PDF Base64 encoder
PDF to Base64 Converter
Convert a PDF file into raw Base64, a reusable data URL, JSON or JavaScript directly in your browser. Your document never leaves your device.
Output
Waiting for inputBase64 output
Your Base64 output will appear here
Choose a PDF to generate raw Base64, a data URL, JSON or JavaScript output for development workflows.
Raw Base64Data URLLocal processing
Your PDF stays on your device
The browser reads the file with local APIs and converts its bytes directly. No backend endpoint, temporary upload or cloud storage is required.
Base64 is larger than the PDF
Base64 normally adds about one third to the original binary size. The result card shows both the source size and encoded length so you can decide whether Base64 is appropriate.
How to convert PDF to Base64
- Drop a PDF or click the file selector.
- Click Convert PDF to Base64.
- Choose raw Base64, Data URL, JSON or JavaScript, then copy or download the text.
PDF to Base64 FAQ
Does Base64 compress the PDF?
No. Base64 is an encoding format, not compression. The encoded text is usually larger than the original PDF.
Which output should I use?
Use raw Base64 for APIs, a data URL for browser previews, JSON for structured payloads and JavaScript for quick browser integration.
Can I convert a password-protected PDF?
Yes, because the tool encodes the original bytes without opening or changing the document. The password protection remains part of the PDF.
PDF workflow
Continue with PDF and Base64 tools
Decode Base64 back to PDF or use another browser-based PDF workflow.