Convert Base64 to PDF Online

Decode Base64 and Convert to PDF

Paste or upload a Base64-encoded PDF string and decode it back into a viewable PDF file. Useful for developers handling Base64-encoded PDFs from APIs or email attachments.

How it works

1. Paste your Base64 string or upload a .txt file containing it.
2. Click Decode to PDF.
3. Download the decoded PDF file.

Tips for best results

• The Base64 string should encode a valid PDF file - not an image or other format.
• Remove any data URI prefix (data:application/pdf;base64,) before pasting if present.

Frequently asked questions

What is Base64?

Base64 is an encoding that converts binary data (like a PDF) into a text string safe for use in APIs, emails, and HTML data URIs.

What if my string has a data URI prefix?

Remove "data:application/pdf;base64," from the beginning before pasting.