Base64 File Converter

Encode any file type into a Base64 data string, or decode Base64 data back to downloadable files.

1. File to Base64 (Encode)

2. Base64 to File (Decode)

Convert files to Base64 and back in the browser

Base64 encoding schemes are commonly used when there is a need to encode binary data that needs to be stored and transferred over media that are designed to deal with textual data. This ensures that the data remains intact without modification during transport.

With our Base64 File Converter, you can quickly encode any local file (e.g. pictures, docx, logs) into a Base64 text string, or paste any base64 data string back to save and download it as its original binary file. All file operations are secure, fast, and process purely in-memory in your client browser.

よくある質問

You can convert any file, including images (PNG, JPG), documents (PDF, DOCX, XLSX), audio/video, or compressed archives (ZIP, RAR).

No, Base64 is a lossless encoding method. It represents the original binary bytes using 64 ASCII characters, resulting in a slightly larger text block without modifying the underlying data.