Base64 Encoder / Decoder

Encode and decode Base64 strings online for free. Supports URL-safe Base64. Fast, easy, and no installation needed.

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All processing happens locally in your browser. No data is sent to any server.

Encode and decode Base64 strings online, including URL-safe Base64, for developers, API testing, debugging, and data conversion.

Fast Base64 encoding and decoding

Base64 is commonly used in APIs, tokens, configuration values, data URLs, and development workflows. This tool converts text to Base64 and Base64 back to readable text.

Helpful for debugging and API work

Use it to inspect encoded strings, test payloads, convert small snippets, and switch URL-safe mode when working with web-safe values.

Common Use Cases

  • Decode API payload snippets.
  • Encode small text values for testing.
  • Inspect Base64 strings during debugging.
  • Convert URL-safe Base64 values.

How to Use This Tool

  1. 1Choose encode or decode mode.
  2. 2Paste your text or Base64 string.
  3. 3Toggle URL-safe mode if needed.
  4. 4Copy the converted output.

Frequently Asked Questions

What is Base64 used for?

Base64 represents binary or text data using safe ASCII characters, often for transport in APIs, URLs, and configuration.

Is Base64 encryption?

No. Base64 is encoding, not encryption. Anyone can decode it if they have the string.

Is this tool private?

Most processing runs locally in your browser whenever possible, so your files are not uploaded for routine conversions and edits.

Useful For

A few nearby tasks this tool can help with.

Inspect encoded API valuesDecode tokens during debuggingPrepare small Base64 snippetsSwitch URL-safe encoded text