Base64 File Converter

Base64 file converter

Convert a file to Base64 or create a downloadable file from a Base64 string directly in the browser.

Include Data URI prefix

File

Choose a fileDrop a file here or click to select it. Conversion runs locally in the browser.Choose a file

Base64 output

Convert files and Base64 online

Choose a local file and get a Base64 string for JSON payloads, test fixtures, data URIs or small inline assets.

You can also paste Base64 or a Data URI, set the filename and MIME type, and download the decoded file without sending it to the server.

✓ The tool runs directly in the browser and is ready for quick checks without installing software.

✓ Input can be cleared and recalculated immediately, which is useful for repeated small tasks.

✓ Use fullscreen mode when you need more space for long text, structured data or large result blocks.

✓ Copy buttons are available on generated output so results can be reused in code, documents or support chats.

✓ Most operations are deterministic: the same input and options produce the same output.

✓ For sensitive content, prefer local browser tools and review the result before sharing it further.

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