What is PDF to Base64 Converter?
PDF to Base64 Converter converts PDF documents into Base64 strings and reconstructs PDFs from Base64 strings.
How to use PDF to Base64 Converter
Upload a PDF to output Base64, or paste Base64 data to download the reconstructed PDF file.
Key features
- Encodes PDF files to Base64
- Decodes Base64 to PDF
- 100% client-side operation
Common use cases
- Transmitting PDF document attachments inside REST API JSON requests
Technical details & standards
Encodes binary PDF streams using FileReader API client-side.
Frequently asked questions
Can I preview the decoded PDF?
Yes, an embedded PDF viewer renders the decoded document.
Is my data safe?
All processing happens entirely in your browser. Your data never leaves your device and is never sent to or stored on a server.
Does it work offline?
Yes. Once the page has loaded, most tools keep working without an internet connection.