About this utility
How to use File → Base64 Encoder
Encode any local file as Base64 or a complete data URI without uploading its bytes.
What to provide
Drop a file to encode it. Use the Base64 Encoder & Decoder utility when the source is Base64 text.
- Choose or drag the local file into the clearly labeled drop area.
- Choose the options that match your intended result.
- Select “Run tool” or press Ctrl/Command + Enter, then copy, download, or move the result back into the first input for another pass.
What the result means
Base64 or a data URI for the selected file, with byte count and MIME metadata.
Privacy and safety
This utility is loaded as browser code and processes your input only in this tab. OmniCastConverter has no upload endpoint and never stores your content, filenames, tokens, or secrets. Generated markup and code are shown as inert text and are never executed.
Limitations
- The focused file workspace encodes files up to 64 MiB. Arbitrary decoded binary should use a corresponding converter route.
Try the included example
Select “Load example” at any time to restore this tested sample.
(choose a local file)