Base64 Encoder / Decoder
Encode text and binary files to Base64 or decode Base64 strings back to original text and files. Supports international UTF-8 characters, URL-safe encoding, and Data URI generation.
Full UTF-8 and multi-byte character support
Standard browser Base64 functions (atob/btoa) often fail or produce mojibake when handling UTF-8 text like emojis, Thai script, or Asian languages. FileKinetix utilizes full TextEncoder/TextDecoder integration to encode and decode multi-byte UTF-8 strings accurately without corruption.
Binary file encoding & Data URI generation
Convert images, PDFs, audio clips, and documents into Base64 strings for embedding directly into CSS, HTML data URIs, or JSON payloads without external assets.
How to use the Base64 Converter
- Choose 'Text Mode' for strings or 'File Mode' for images and documents.
- In Text Mode, type or paste your text and select 'Encode' or 'Decode'.
- Enable 'URL-Safe' if you intend to include Base64 in URL parameters.
- In File Mode, drop a file to get its Base64 string, or paste Base64 to restore and download the file.
Frequently Asked Questions
Does this tool support non-English characters and emojis?
Yes! The tool uses proper UTF-8 byte serialization, ensuring symbols, emojis, and all international alphabets encode and decode flawlessly.
What is URL-safe Base64?
Standard Base64 uses '+' and '/' characters, which have special meanings in URLs. URL-safe Base64 replaces '+' with '-' and '/' with '_', and strips trailing '=' padding.
Are my files uploaded to a server during Base64 conversion?
No. File reading and binary decoding happen 100% locally in your browser memory.