Text ↔ Base64
Encode UTF-8 text to Base64 or decode Base64 back to readable text.
Text
Base64
File Tools
Drag-and-drop or upload a file to encode as Base64, or decode Base64 back into a file.
Drop files here or select from your device
Large files are processed in the browser — no uploads, ever.
Uses CORS-safe `fetch` in your browser. The remote server must allow cross-origin requests.
Batch results
Drop or select multiple files to encode them sequentially. Each row keeps its own encoded output.
| File | Size | MIME | Output | Actions |
|---|---|---|---|---|
| No files processed yet. | ||||
Encoded Base64
Decode Base64 → File
Advanced Tools
Validate Base64 payloads, compare encoded data, and inspect metadata.
Validator
Diff / Compare
Metadata Builder
History
We keep the last 10 operations in this browser only. Nothing leaves your device.
No history yet.