0 chars / 0 bytes
0 chars / 0 bytes
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Recent Conversions
Keyboard shortcuts: Ctrl+Enter convert · Ctrl+Shift+C copy output
🔒 Your data never leaves this page. All encoding and decoding happens locally in your browser.
File → Base64
Drag & drop a file here, or browse
Any file type · Files >5 MB will show a warning
⚠️ Large file detected. Encoding may take a moment — the UI will remain responsive via a background worker.
✓ Copied!
Base64 → File Download
Paste a Base64 string (with or without a data:[mime];base64, prefix). The MIME type will be detected automatically if the prefix is present.
🔒 Your file never leaves this page. All processing happens locally in your browser.