Decode pasted Base64
Paste encoded strings from APIs, configuration files, logs, or developer tools and recover readable text.
Base64 utility
Online Base64 Decoder
Decode Base64 strings to plain text in your browser. No coding required. Convert Base64 encoded strings.
- Browser-based
- No upload
- Instant output
How it works
Paste Base64 text Enter an encoded string or data URL
Decode Base64 Convert to readable UTF-8
Use the result Copy or download your text
data: URLs and line breaks are OK
Readable UTF-8 text
About the Base64 Decoder
Paste a Base64 string and turn it back into readable UTF-8 text in your browser. Useful for API payloads, encoded configuration values, logs, and developer handoffs.
When Base64 decoding is useful
Base64 is a transport encoding, not encryption. Decoding recovers the original text when the payload was UTF-8 content—JSON fragments, config values, identifiers, or other strings copied from responses, webhooks, and tickets.
Need the reverse path? Use the Base64 Encoder. For percent-encoded query values use the URL Decoder. Image payloads belong on Image to Base64 or Base64 to Image. Token-shaped strings often pair with the JWT Decoder / Generator.
Inspect API and debugging data
Decode Base64 values found in API responses, webhooks, headers, logs, and application debugging output.
Copy or download decoded text
Copy the result directly or save decoded text as a .txt file for further work.
Continue with related encoding tools
Re-encode text with the Base64 Encoder, decode percent-encoded URLs with the URL Decoder, or inspect JWT payloads with the JWT Decoder / Generator.