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YFT
Client-side ProcessingUpdated 2026-02-11Report issue

Runs fully in your browser. Inputs stay on your device. See recent fixes on changelog.

File to Base64 Encoder

Encode any file to a Base64 string for embedding.

FreeRuns in browserfile to base64base64 encode file

Encodes any file to Base64 for embedding in HTML, CSS, or JSON.

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Cmd/Ctrl+Enter Primary actionCmd/Ctrl+Shift+L Load sampleCmd/Ctrl+Shift+X Clear/resetCmd/Ctrl+Shift+C Copy result

About File to Base64 Encoder

Encode any file to a Base64 string for embedding. Encode any file to a Base64 string online for free. Get data URIs for images, PDFs, and any file type for embedding in HTML, CSS, or JSON documents directly. Implements standard encoding and decoding algorithms that produce output compatible with all major programming languages and platforms. Supports both encoding and decoding in a single interface. This tool specializes in converting from File to Base64 Encoder, providing optimized defaults and precision for this specific direction. Looking for the reverse conversion? Try our Base64 Encoder to File converter. Everything runs client-side in your browser for maximum speed and privacy — no data is sent to any server, and no signup is required.

Related tools: Base64 to File Decoder, Data URI Generator, File Size Analyzer

How to Use File to Base64 Encoder

  1. Enter text or data in the input field.
  2. Click Encode or Decode depending on your goal.
  3. Copy the output to your clipboard.

Frequently Asked Questions

What is File to Base64 Encoder?
Encode any file to a Base64 string online for free. Get data URIs for images, PDFs, and any file type for embedding in HTML, CSS, or JSON documents directly.
What encoding standards are used?
This tool follows the official encoding specifications, including RFC standards where applicable. The implementation matches widely-used libraries so the output is compatible with other systems and programming languages.
Can I encode binary data?
The tool primarily handles text input, but many encoding formats such as Base64 are designed to represent binary data as text. You can paste Base64-encoded binary data for decoding or encode text into a binary-safe format.
Is the encoding reversible?
Yes, all encoding operations provided by this tool are fully reversible. You can encode text and then decode it back to get the exact original content without any data loss.
Is File to Base64 Encoder free to use?
Yes, encoding and decoding are completely free with no usage limits. The tool runs in your browser and requires no registration.
Is my data safe when using File to Base64 Encoder?
Yes, all encoding and decoding happens locally in your browser. No data leaves your device, so your input remains completely private.

Related Tools

Base64 to File Decoder
Decode Base64 strings back to downloadable files.
Data URI Generator
Generate data URIs from files for inline embedding.
File Size Analyzer
Analyze file size and show breakdown in all units.