HomeBase64 Encoder/Decoder

Base64 Encoder/Decoder

Quickly encode and decode MIME Base64 strings with standard, MIME and URL-safe formats, supports text and file conversion



Documentation

About Base64 Converter

This tool supports Base64 encoding/decoding in both text and file workflows for debugging, embedding, and data transfer tasks.

Key Features

  • Text Mode: Convert between plain text and Base64.
  • File Mode: Encode/decode files and download outputs.
  • Format Options: Supports common Base64 variants (including URL-safe style).
  • Quick Actions: Clear, paste, copy, sample, and download.
  • Status Feedback: Shows operation status and file details.

Steps

  1. Choose text mode or file mode.
  2. Select encode or decode direction.
  3. Enter text or upload a file.
  4. Copy output text or download processed files.

Use Cases

  • Preparing Base64 payloads before upload.
  • Verifying Base64 API fields during integration.
  • Embedding small assets in markup.

FAQ

Why is decoded content garbled?

Ensure original encoding and Base64 variant match (standard vs URL-safe).

Is slow processing on large files expected?

Yes. Browser-side conversion can consume significant memory/CPU for large files.