Encoder and decoder tools for Base64, URLs, HTML, Java, and XML
Encoded data often appears in headers, query strings, logs, data URIs, PDFs, and integration payloads. These tools help reveal what a value actually contains before you decide whether to format, validate, convert, or redact it.
Tools in this workflow
Encoders & Decoders
OpenBase64 Encode / Decode
Encode plain text to Base64 or decode Base64 back to readable text with Unicode support.
Encoders & Decoders
OpenBase64 to PDF
Paste Base64 PDF data, validate it, preview it in the browser, and download the file.
Encoders & Decoders
OpenPDF to Base64
Upload a PDF file in the browser and convert it to Base64 with optional data URI output.
Encoders & Decoders
OpenURL Encode / Decode
Convert strings between readable text and URL-safe encoded values with instant feedback.
Encoders & Decoders
OpenHTML Escape / Unescape
Escape HTML entities for safe embedding or unescape entity-heavy content back to readable markup.
Encoders & Decoders
OpenJava Escape / Unescape
Convert Java string literals to readable text and escape raw content for source code safely.
Encoders & Decoders
OpenXML Escape / Unescape
Escape XML-sensitive characters or unescape encoded values back into readable markup.
Dev Debug Helpers
OpenEscaped String to HTML
Convert escaped HTML strings back to readable markup and preview the rendered result safely.
Related guides
FAQ
Is Base64 encryption?
No. Base64 is reversible encoding, not encryption. Treat decoded credentials, tokens, and personal data as sensitive.
Why does a decoded value look unreadable?
The decoded bytes may be a binary file rather than UTF-8 text. Use a file-specific tool, such as Base64 to PDF, when the source value represents a document.