Encode Tools / File

File to Base64

Convert any local file to Base64 with a friendly validator and an output mode that actually changes the result.

Encoding Browser only Raw or data URL

Convert file

Primary input: choose a file

Select any file from your device. The page reads it locally and never uploads it.

Only used for Data URL output.
Files larger than 10 MB are rejected before encoding starts.
No file selected 0 ms

Preview and checks

The secondary controls are useful when you need a specific output format instead of a one-size-fits-all result.

  • Raw Base64 removes the `data:` prefix.
  • Data URL mode keeps the prefix and can use a MIME override.
  • Invalid MIME values are rejected with a friendly message.
  • Empty files and missing files are caught before conversion.
Sample result 
Output appears here after a successful conversion.

Base64 output

0 characters
Choose a file to begin.