Base64 PDF Converter
Convert PDF files to Base64 or decode Base64 back into a PDF. Everything is processed directly in your browser for a fast, simple and privacy-friendly experience.
Convert PDF to Base64
Select a PDF file or drag it into the box below. Your file stays in your browser while it is converted.
Drop your PDF here
or choose a PDF file from your device
Browser Processing
Files are processed locally instead of being uploaded to a conversion server.
Fast Conversion
Convert PDF and Base64 data directly in your browser without unnecessary server processing.
Mobile Friendly
The converter is designed to work comfortably on phones, tablets and desktop devices.
Free PDF to Base64 Converter
A Base64 PDF converter changes the binary data of a PDF document into Base64 text. This can be useful when PDF data needs to be stored or transferred inside text-based formats such as JSON, XML, HTML or application data.
What is Base64 PDF?
Base64 is an encoding method that represents binary data using text characters. A PDF can therefore be converted into a long Base64 string that can be stored or transmitted in systems that primarily work with text.
The Base64 representation is not a different type of PDF. It is simply another representation of the same underlying file data. Decoding the Base64 data restores the original binary PDF content.
How to Convert PDF to Base64
Converting a PDF to Base64 with this tool takes only a few steps:
- Open the PDF to Base64 tab.
- Choose a PDF file or drag it into the upload area.
- Click “Convert PDF to Base64”.
- Copy the generated Base64 data or download it as a text file.
How to Convert Base64 to PDF
You can also reverse the process. Select the Base64 to PDF tab, paste your Base64 data and choose the decode option. The browser converts the encoded data back into PDF bytes and creates a downloadable PDF file.
Why Use Base64 for PDF Files?
Base64 can be useful when an application needs to include PDF data inside a text-based payload. Common examples include API requests, JSON objects, database fields, application configuration and document transmission.
Base64 normally increases the size of binary data compared with the original file, so it is not generally a replacement for normal PDF file storage. It is primarily useful when a text representation is required.
Is This Base64 PDF Converter Private?
Yes. The conversion logic on this page runs inside your browser using JavaScript. The selected PDF is read locally by the browser and converted into Base64 without requiring a file upload to a conversion server.
As with any browser-based tool, you should still use a trusted device and browser when working with confidential documents.
Base64 PDF Converter FAQ
Common questions about converting PDF files to Base64 and decoding Base64 back into PDF.
What is a Base64 PDF?
A Base64 PDF is PDF file data represented as Base64 text. The encoded text can later be decoded to reconstruct the original PDF bytes.
Can I convert a PDF to Base64 online?
Yes. This page provides a browser-based PDF to Base64 converter that reads the selected PDF and generates Base64 data locally.
Can Base64 be converted back to PDF?
Yes. Paste valid Base64 PDF data into the Base64 to PDF converter and the tool can decode it into a PDF file.
Does the PDF get uploaded to a server?
The conversion on this page is performed locally in the browser. The tool does not need to upload the selected PDF to a conversion server.
Does Base64 make a PDF smaller?
No. Base64 generally makes binary data larger. Its main advantage is that binary content can be represented as text for systems that require text-based data.
Can I use the Base64 PDF output in JSON?
Yes. A Base64 string can be placed in a JSON value when an application needs to transfer PDF data as text.