PDF to Base64
Encode PDF files into Base64 for JSON payloads, testing and data URL workflows.
Drop files here or click to browse
Batch processing is supported where the browser can safely handle it.
B64 output
Preview, file size, and downloads appear here after processing.
Your output will appear here
Run the tool to see previews, file sizes and download actions.
About PDF to Base64
PDF to Base64 is built for the specific pdf input to b64 output workflow, not a generic upload page. Use it when you need page images, text extraction, Base64 handoff, or a PDF created from images or plain text.
Processing happens locally in your browser where the selected format is supported, so files do not need to be uploaded for the normal workflow. The tool shows file details, output status, download actions, and practical warnings when a browser cannot safely decode or encode a format such as HEIC, TIFF, AVIF, or encrypted PDF.
Best practice: verify page order and readability after export, especially when converting scans, screenshots, or multi-page PDFs.
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Frequently Asked Questions
PDF previews and page images are rendered in the browser with pdf.js. PDF creation uses pdf-lib locally.