About Base64 → File
Decode raw Base64 or Data URLs, detect MIME information, estimate size, and preview supported images.
Base64 to File validates a raw Base64 payload or Data URL, decodes it into bytes, reports the MIME type and size, and previews supported images before download.
How to use it
- Enter or select your source data.
- Adjust the available options and run the tool.
- Review, copy, or download the result.
Common use cases
- Recover an attachment embedded in an API response.
- Inspect and save a Data URL from browser output.
- Validate a small binary fixture without uploading it elsewhere.
Worked example
Paste a data:image/png;base64 URL, preview it, and download the PNG.
Limitations and responsible use
- The MIME type in a Data URL is a claim and does not prove the actual file format.
- Decoded content is not scanned for malware or validated by a format-specific parser.
- Large pasted payloads can consume several times their decoded size in browser memory.
Frequently asked questions
Why is the download named .bin?
Raw Base64 contains no MIME metadata, so the tool cannot reliably infer an extension.
Is it safe to open every decoded file?
No. Treat files from untrusted sources like any other untrusted download and scan them appropriately.