Base64 Encoder / Decoder
FastEncode or decode Base64 strings instantly
About Base64 Encoder / Decoder
Base64 Encoder & Decoder provides instant, secure binary-to-text encoding for web developers, system administrators, and security specialists. Base64 encoding is widely used for embedding inline images in CSS, sending binary payloads over HTTP headers, and encoding email attachments.
Our tool handles standard UTF-8 string encoding as well as binary file conversion with full round-trip accuracy. Because operations execute locally in your client session, your tokens and private files remain private.
Common Use Cases
- Encoding API basic authentication credentials (username:password) for HTTP headers
- Converting small icon images into inline Base64 Data URIs for CSS styling
- Decoding Base64-encoded strings from JWT payloads, webhook signatures, or log outputs
How to Use Base64 Encoder / Decoder
- Select 'Encode' or 'Decode' tab mode.
- Paste your text string or drag and drop a raw file.
- Copy the instant Base64 output with a single click.
Real-World Examples
Hello SajiloTools 🇳🇵SGVsbG8gU2FqaWxvVG9vbHMg8J%2BGjPCfh7Dwn4ejImportant Notes & Limitations
- Base64 is an encoding scheme, not encryption; anyone can decode a Base64 string
- Increases raw data volume by approximately 33%
Privacy & Data Security
Base64 Encoder / Decoder processes all operations 100% locally in your web browser memory. Your files, text snippets, and generated outputs are never stored, logged, or uploaded to any remote server.
Frequently Asked Questions
Base64 encoding converts binary data into ASCII text characters, making it safe to transmit data inside URLs, JSON payloads, and HTTP headers without corruption.
No, Base64 is an encoding scheme, not encryption. It can be decoded easily by anyone, so do not use Base64 alone to protect sensitive passwords.
Yes, our encoder handles standard Unicode characters, non-Latin scripts (including Devanagari), and emojis smoothly.
Yes, toggle to Decode mode to instantly convert any valid Base64 string back into readable text or raw file data.