PDF to Base64 Converter
Convert PDF files to Base64 encoded strings online. Upload PDF documents and get Base64 output for embedding in web apps, emails, or API requests.
Input
Click to upload or drag and drop
Images, PDFs, text files, JSON, etc.
About This Tool
Mode: encode
URL-Safe: No
Base64 encoding converts binary data to ASCII text, making it safe for text-based systems like JSON, XML, and URLs.
Base64 Output
Enter text to see the Base64 encoded result here.
Frequently Asked Questions
How do I embed a Base64 PDF in HTML?
Use an iframe or object tag with a data URI: <iframe src="data:application/pdf;base64,YOUR_BASE64_HERE"></iframe>. Note that browser support varies.
What's the maximum PDF size I should convert?
For best performance, keep PDFs under 5MB. Larger PDFs will work but may slow down your browser during encoding.
Can I convert password-protected PDFs?
Yes, the PDF is encoded as-is including any encryption. The Base64 output doesn't remove or bypass password protection.
Will the PDF quality be affected?
No, Base64 encoding is lossless. The decoded PDF will be identical to the original with no quality degradation.
Practical Examples
PDF Email Attachments
Encode PDFs for embedding in HTML emails without external links.
Document API Upload
Send PDF documents as Base64 in JSON payloads to document APIs.
Inline PDF Viewer
Embed PDFs directly in web pages using data URIs (with browser support).
Common Issues & Solutions
Only PDF files are accepted. For other documents, use the general file encoder.
Large PDFs may cause browser memory issues - consider server-side encoding for very large files.
Not all browsers support inline PDF viewing via data URIs.
The output includes only the Base64 data. Use 'Copy as Data URI' for embedding.