Base64 to PDF Converter
Convert Base64 into PDF with live preview, validate the content, decode file size, and download. Also convert PDF to Base64 and copy output instantly. Bonus: decode Base64 JPG/PNG images.
Converter Workspace
100% Offline Browser ProcessingBase64 to PDF / Image
Paste Base64 text below. Data URI prefixes are auto-detected and stripped.
PDF to Base64
Upload a PDF to generate Base64 text. You can format the output into 76-character MIME lines.
Ready. Paste Base64 and click Convert & Preview.
How to Convert Base64 to PDF Online
Step 1: Paste Base64
Paste raw Base64 or a full data URI with prefix.
Step 2: Validate and Preview
The tool verifies decoded content and opens live PDF/image preview.
Step 3: Download or Reverse
Download output file or upload a PDF to generate Base64 text.
Frequently Asked Questions
Q. Do I need to remove data URI prefix manually?
No. The converter automatically strips prefixes like data:application/pdf;base64,.
Q. Why does conversion fail for some strings?
Invalid Base64 or non-PDF/non-image binary payload will trigger validation errors.
Q. Can I output MIME chunked Base64?
Yes. Enable the 76-character chunk option in the PDF-to-Base64 panel.
Q. Are JPG and PNG Base64 values supported?
Yes. Auto mode detects and previews both PNG and JPEG image payloads.
Q. Is this converter private?
Yes. All decoding and encoding happens locally in your browser only.