Convert to URL-safe Base64 or restore the original content.
Supported formats & limits UTF-8 / Base64 / URL → UTF-8 / Base64 / URL
Enter text or choose a file, select encoding options, and process. Review the result and save the complete output. Binary data can be downloaded even when it is not valid text.
No payment or login required. No daily usage limits. Files are processed in your browser.
UTF-8 text and raw file bytes are separate. Invalid Base64 padding, characters and percent escapes are rejected. Decoded HTML and SVG are never executed.
Up to 24 MiB of input. Only the first 12,000 characters appear in text previews. Standard Base64 requires canonical padding; Base64URL permits unpadded input. Data URL previews allow static PNG/JPEG/WebP/AVIF only.