What Is Base64?
Representing data with text only
Base64 turns data such as images into text made only of letters, digits and symbols. It is not encryption.
What you'll learn from this poster
- What it doesUses 64 characters / A-Z a-z 0-9 and + / / To carry data in mail or the web
- How it works3 bytes -> 4 characters / Pad missing parts with = / Can be turned back
- Where it's usedEmail attachments / Embedding images in HTML / Passing data around
- Watch outNot encryption (content is visible) / Size grows about 1.3x / Make Japanese UTF-8 first
Base64 turns data into text (not encryption)
Usage: Free to print and display for learning at school or home (no sign-up). High-resolution portrait PNG (1024×1536); A3 or larger is recommended. Please do not sell, use commercially, or redistribute modified versions.