What is Base64 to PDF?
A Base64 to PDF converter turns ASCII Base64 text back into a binary PDF file. APIs and email systems often ship PDFs as Base64 inside JSON. This tool decodes that text so you can preview and download the real document.
Base64 to PDF Converter
Convert Base64 to PDF online. Preview, download, or encode PDF to Base64
Use this free Base64 to PDF converter to convert Base64 to PDF online, preview the document, and download it. Switch to PDF to Base64 to encode an uploaded file. 100% client-side. Your data never leaves your browser.
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Quick Reference
Decode Tips
%PDF | Valid PDF magic header |
data:... | Data URL prefix is stripped |
whitespace | Spaces and newlines ignored |
download | Saves as document.pdf |
Encode Tips
.pdf | Upload PDF files only |
15 MB | Upload size limit |
raw | Plain Base64 string |
data URL | Embeddable prefix included |
Base64 to PDF Guide
Base64 to PDF vs PDF to Base64
Base64 to PDF pastes encoded text and produces a file. PDF to Base64 uploads a PDF and produces text you can paste into an API payload. Use the same mode your workflow needs.
Data URLs
A data URL looks like data:application/pdf;base64,JVBERi0.... Paste the full string. The tool strips the prefix before decoding. When encoding, choose Data URL output if you need that prefix for embedding.
Using this converter
All work stays in your browser. For general text Base64, use the Base64 Encoder & Decoder. To inspect JSON that contains Base64 fields, try the JSON Validator.
Base64 to PDF FAQ
How do I convert Base64 to PDF online?
Paste your Base64 string and click Convert. Preview the PDF in the browser or download document.pdf. Processing stays local.
Can I convert PDF to Base64?
Yes. Open PDF → Base64, upload or drop a PDF, and click Encode. Copy raw Base64 or a data URL.
Does this tool accept data URL Base64?
Yes. Prefixes like data:application/pdf;base64, are stripped automatically before decoding.
Is my PDF data safe?
Decoding and encoding run in your browser. Files are not uploaded to a server.
Why do I get an invalid PDF error?
The string may be truncated, corrupted, or not a PDF. After decoding, valid PDFs start with %PDF.
What is the file size limit?
Uploads are limited to about 15 MB to keep the browser responsive.
Is Base64 to PDF free?
Yes. Free, no signup, and usable offline after the page loads.
When should I use PDF Base64?
When an API or email system transports PDFs as text. Related tools: Base64 Encoder, JSON Validator.