ترميز Base64 وفك ترميزه.

Text up to 200,000 characters; binary file up to 5 MB. Base64 is not encryption.

Base64 represents bytes using printable characters and typically increases size by about one-third. Text mode uses UTF-8, while file mode preserves bytes. Invalid Base64 is rejected, and decoded binary output can be saved without opening it.

Hello → SGVsbG8=; a binary file → Base64 text.