📁 Test Files
Dummy files for upload feature testing, boundary-value tests, and error-handling verification. All files are free and require no signup. MD5 / SHA-256 hashes and curl / wget / PowerShell download commands are included.
By format
Image files
PNG / JPG / WebP / GIF / BMP / TIFF / HEIC / AVIF / SVG / ICO
1KB〜100MBまで各サイズ。透過・アニメーション・EXIF付きも
100KB 〜 100MB
単一ページ・複数ページ・大容量PDF
ZIP
1MB 〜 100MB
圧縮率検証・大容量アーカイブ
CSV
日本語データ入り・各エンコーディング
UTF-8 / Shift_JIS / BOM 付き など
JSON
10KB 〜 100MB
整形済み・ミニファイ・多階層構造
Text
Plain TXT
Multilingual, long text, various line endings
By use case
Threshold tests
9.9MB / 10MB / 10.1MB / 24.9MB / 25MB / 25.1MB
Verify Gmail, Discord, WordPress upload boundaries
Broken files
Corrupt headers, spoofed extensions, truncated files
Verify upload validation and error handling
Character encoding
UTF-8 / UTF-8 BOM / Shift_JIS / EUC-JP / UTF-16
Mojibake verification and encoding-detection tests
Line endings
LF / CRLF / CR / mixed
Verify Windows / Unix / Mac line ending compatibility
📌 Included with every test file
- ✅ Byte-precise size guarantee
- ✅ MD5 / SHA-256 hashes published
- ✅ curl / wget / PowerShell command examples
- ✅ Direct links (via CDN / fast download)