How to Inspect and Decode Base64 File Data

Why a Base64 inspector helps

APIs, email attachments, and data URLs often ship files as Base64 strings. Without a decoder, it is hard to tell whether you are looking at an image, PDF, or corrupted payload.

Common use cases

Debug API responses, verify embedded data URLs, inspect small attachments, and confirm MIME types before saving files.

How to use the Base64 File Inspector

Paste a Base64 string or data URL, inspect detected file type and size, preview supported formats, then download the decoded file.

Privacy-first decoding

Encoded payloads may contain credentials or private documents. Decoding locally keeps sensitive data off third-party servers.