Base64 Decoder

Convert Base64 back into text, or decode it into a file you can download — for images, documents and more.

Your input is decoded locally in your browser and never uploaded.

How to use Base64 Decoder

  1. Paste the Base64 text.
  2. Choose “Decode to text” or “Decode to file”.
  3. Copy the result or download the file.

About this tool

When you receive data as Base64 — an image in an email, an attachment in a JSON file — this tool turns it back into its original form. Text is decoded as UTF-8, and files are offered back as a download.

Frequently asked questions

How do I know whether to decode as text or file?
If the Base64 came from text, decode to text. If it came from an image, PDF or other binary, choose “Decode to file”. The tool auto-detects common file signatures.
My Base64 has spaces or line breaks — is that a problem?
No. Whitespace is ignored automatically, so pasted blocks decode fine.

Related tools

Base64 Encoder Encode text or files to Base64 with a single click. URL Decoder Decode percent-encoded URLs back into readable text. JSON Validator Check whether your JSON is valid and find the exact error.