Base64 Encoder/Decoder
Encode and decode Base64
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About Base64 Encoding
Base64 encodes binary data as ASCII text using 64 printable characters (A–Z, a–z, 0–9, +, /). It is commonly used to embed binary assets in JSON, XML, HTML, or email payloads where binary data cannot be transferred directly.
File Upload
Switch to Encode mode and click Upload to convert any binary file — images, PDFs, archives — into a Base64 string. The encoded result can be used directly in data: URIs or API payloads.
FAQ
- How do I encode or decode Base64 online?
- Paste your text into Toollo's Base64 tool and instantly get the encoded or decoded result. Switch between encode and decode modes with one click. It's free and requires no signup.
- What is Base64 encoding used for?
- Base64 encoding converts binary data into ASCII text, commonly used in email attachments, data URIs, API authentication tokens, and embedding data in JSON or XML.
- Is it safe to decode Base64 strings on Toollo?
- Yes, all encoding and decoding runs in your browser with no server communication. Your data stays completely private, making it safe to handle tokens, credentials, or any sensitive content.