Base64 Analyzer
Deep-scan Base64 strings. Detect charset, padding, MIME type, and validity.
Last Updated: August 2026
100% Client-Side — Your data never leaves your device
Select file
Supports PNG, JPG, GIF, SVG, WebP
Max 10MB
Frequently Asked Questions
Search below or browse through our most commonly asked questions.
It performs a deep inspection of any Base64 string to check if it's valid, determine if it uses a standard or URL-safe character set, check its padding, and detect any embedded MIME types (like Data URIs).
No. The entire analysis process happens locally in your web browser. Your data is never uploaded or logged.
If the string is formatted as a Data URI (e.g., data:image/png;base64,...), the analyzer will detect the MIME type. Otherwise, standard Base64 strings do not inherently contain file type information.
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