Base64 encoding converts binary PDF data into text that can be transmitted through systems that only handle text. This is essential for embedding PDFs in HTML emails, API responses, JSON data, and database storage.
When to Encode PDF as Base64
Web developers embed PDF content directly in HTML pages as data URIs. API developers return PDF data as Base64 strings in JSON responses. Email systems encode PDF attachments as Base64 for transmission. Database administrators store PDF files as text in database columns.
How It Works
Upload your PDF to the tool, and it converts the binary file to a Base64 text string. The string can be copied and used wherever text-encoded data is required. The conversion is reversible using the Base64 to PDF tool.
Important Notes
Base64 encoding increases the file size by approximately 33 percent. A 1 MB PDF becomes about 1.37 MB of Base64 text. For large files, consider whether Base64 encoding is necessary or if file transfer alternatives exist.
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