Convert Base64 or hex encoded PDF bytes to viewable PDF instantly. Preview, download, or open in new tab.
- Paste Base64 or hex-encoded PDF data and view instantly
- Preview in browser, download as file, or open in new tab
- No upload to server; decoding in your browser only
- Useful for API responses or embedded PDFs
APIs sometimes return PDFs as Base64 or hex. View them without saving to disk or using a separate decoder.
Spoold is a free developer toolbox that detects what you paste and opens the right tool.
- No sign-up – Use every tool without an account.
- Runs in your browser – Your data stays on your device; we don’t store or log your input.
- Paste and go – Paste JSON, HTML, JWT, curl, Base64, or any text on the homepage and Spoold suggests the right tool.
- One place for many tools – JSON formatter, JWT decoder, Base64, UUID generator, regex tester, curl-to-code, and more.