Key features
- Encode images, PDFs, JSON, spreadsheets, and binary files.
- Decode raw Base64 or full Data URLs.
- Inspect detected MIME type and approximate size.
- Copy clean Base64 or download rebuilt files.
File utility
Base64 Converter Online
The Base64 converter helps encode files into Base64 text and decode Base64 or Data URLs back into downloadable files.
Related tools
Frequently asked questions
What is Base64 used for?
Base64 represents binary data as text for transport in APIs, HTML, CSS, or configuration fields.
Can I decode a Data URL?
Yes. Paste a full data:...;base64,... URL and the tool detects the payload and MIME type.
Does Base64 make files smaller?
No. Base64 usually increases size, but it makes binary data safe to store or send as text.