JavaScript Base64 Extractor
Extract and decode Base64-like literals from JavaScript source
Input
Extraction Report
What Is the JavaScript Base64 Extractor?
This tool finds Base64-like string literals in JavaScript and decodes valid candidates into readable text. It helps when obfuscated scripts hide URLs, tokens, or payload fragments in encoded strings.
Extraction runs client-side and does not execute JavaScript. For broader detection, use JavaScript Obfuscation Detector. For string escapes, use JavaScript String Decoder.
How to Use the Extractor
1
Paste Script
Paste JavaScript code or upload a file containing encoded string literals.
2
Review Decoded Candidates
The report lists each Base64 match, decoded text, and nearby source context.
3
Copy or Download Report
Export findings for debugging, security review, or reverse engineering notes.
Example Extraction
Input
JavaScript
Output
Report
Related Tools
Error
Success