Encode Unicode text or any file as Base64. File mode preserves the original bytes.
Input
Paste text (up to 1,048,576 characters) or choose a UTF-8 text file (up to 100 MB).
0 characters · Input is editable; whitespace is preserved.
Output
Your result will appear here after conversion.
Your text and files stay in your browser. No account required.
Frequently Asked Questions
Is Base64 encoding with PDFPilot really free?
Yes. Base64 Encode is completely free to use, with no sign-up or account required.
Are my files uploaded to a server?
No. The encoding runs entirely in your browser using the browser's own FileReader API. Your file is never uploaded to PDFPilot's servers.
What file types can I encode?
Any file type — images, PDFs, spreadsheets, or any other binary file, since Base64 encoding operates on raw bytes, not a specific format.
Why would I need to Base64 encode a file?
Common uses include embedding a small image directly in CSS or HTML (data URIs), or including binary data in a JSON payload or configuration file, since both formats only support text.
Does Base64 encoding compress the file?
No — Base64 actually makes the data about 33% larger, since it's re-representing binary bytes as text characters, not compressing anything.
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