About Base64
Base64 encoding is a way to represent binary data as ASCII characters. It's widely used to embed small images or files into HTML/CSS via data URLs, to include binary attachments in text-based protocols, and for compact interchange of binary fields.
How to use
Paste the plain text you want to encode into the input area and click Encode. The encoded output will appear below for easy copying. To decode, paste a Base64 string and click Decode. The tool attempts to decode safely and will show an error message if the input is not valid Base64.
Why it matters
Base64 is essential for embedding resources directly in documents when reducing HTTP requests is advantageous or when transferring binary data over systems that only handle text. For example, inline SVGs, small PNGs, or icons can be embedded as data URLs. Note that Base64 increases size by about 33%, so it's best for small resources.
FAQs & best practices
- Q: Can I encode images here?
A: Yes — convert your image to a data URL with the Image Compressor or other tools, then use this tool for string-level operations. - Q: Is Base64 secure?
A: Base64 is only an encoding, not encryption. Do not use Base64 for secrecy. For secure storage or transmission, combine with encryption. - Q: Will this handle Unicode text?
A: Yes — the tool encodes/decodes UTF-8 safely so non-English characters survive round trips.
Use this tool together with others on the site for development workflows: format JSON with the JSON Formatter before embedding it in code, generate passwords with the Password Generator and encode them for certain transport scenarios, or compress images before embedding.