常見 Base64 字串
Some Base64 values appear everywhere: in HTML templates, e-mail trackers, tutorials and logs. Here is what they decode to and why they are so common.
R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA71×1 transparent GIFiVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJ...1×1 transparent PNGSGVsbG8gV29ybGQ="Hello World"SSdtIGtpbGxpbmcgeW91ciBicmFpbiBsaWtlIGEgcG9pc29ub3VzIG11c2hyb29tCryptopalsdXNlcm5hbWU6cGFzc3dvcmQ="username:password"JVBERi0Base64 PDF prefix/9j/4AAQSkZJRgABAQBase64 JPEG prefixUEsDBBQBase64 ZIP / DOCX / XLSX prefixAAAAIGZ0eXBpc29tBase64 MP4 video prefixPHN2ZyB4bWxucz0Base64 SVG prefix
Recognising files by their Base64 prefix
| 開頭為 | File type |
|---|---|
iVBORw0KGgo | PNG 圖片 |
/9j/ | JPEG 圖片 |
R0lGOD | GIF 圖片 |
UklGR | RIFF container: WebP image or WAV audio |
PHN2Zy / PD94bWwg | SVG / XML |
JVBERi0 | PDF 文件 |
UEsDB | ZIP archive (also DOCX, XLSX, APK, JAR) |
AAAA…GZ0eXB | MP4 / MOV / HEIC (ftyp box) |
SUQz / //u | MP3 音訊 |
H4sI | Gzip-compressed data |
eyJ | JSON object (also the start of every JWT) |
TVqQ | Windows executable (EXE/DLL) |
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