Base64 codec
Encode and decode Base64 for text or a file, including the URL-safe alphabet.
Runs in browser
Use from your agent
Streamable HTTP at https://benchline.fabwaseem.com/mcp. No key. The tool name is base64_codec.
mcp.jsonjson
1{
2 "mcpServers": {
3 "benchline": {
4 "url": "https://benchline.fabwaseem.com/mcp"
5 }
6 }
7}
tools/calljson
1{
2 "jsonrpc": "2.0",
3 "id": 1,
4 "method": "tools/call",
5 "params": {
6 "name": "base64_codec",
7 "arguments": {
8 "action": "encode",
9 "text": "example",
10 "urlSafe": false,
11 "dataUri": false,
12 "mime": "text/plain;charset=utf-8"
13 }
14 }
15}
Related tools
- JSON formatterPretty-print, minify, and validate JSON, with the exact line and column when it fails.JSONMCPNew
- JWT decoderPaste a JSON Web Token, read the claims, and verify the signature in the browser.Auth debuggingMCP
- JSON YAML converterConvert JSON, YAML, TOML, and XML in the browser, and keep the line number when a document fails.JSONMCPNew
- CSV JSON converterConvert CSV to JSON and JSON back to CSV, with a delimiter and a header row you choose.TablesMCPNew
How it works
Free Base64 encode and Base64 decode tool for text and files. Turn on URL-safe output, wrap a file as a data URI, or decode a data URI back to text or a download. The file never leaves the browser.
- 01
Choose text or a file
Text encodes a string as UTF-8. A file is read in the browser and encoded as raw bytes.
- 02
Encode or decode
URL-safe output drops the padding. A data URI uses the standard alphabet and the file type you set, or text/plain for a string.
- 03
Copy or download
Copy the Base64, or decode it and download the file under the sniffed type.