Cookie Parser & Decoder

Cookieパーサー＆デコーダー

Paste any Cookie or Set-Cookie header to instantly parse it into structured, readable data. Identifies all cookie attributes, URL-decodes values, flags security issues, and exports results as JSON.

使い方

Paste a Cookie header (semicolon-separated key=value pairs) or one or more Set-Cookie headers (one per line) into the input field. The tool auto-detects the format and displays parsed results with all attributes and security analysis.

特徴

• Cookie & Set-Cookie Parsing – Handles both Cookie request headers and Set-Cookie response headers
• URL Decoding – Automatically decodes URL-encoded cookie values
• セキュリティ分析 – Flags missing HttpOnly, Secure, and SameSite attributes with warnings
• Attribute Display – Shows Domain, Path, Expires, Max-Age, Secure, HttpOnly, and SameSite for each cookie
• Human-Readable Expiration – Converts expiry timestamps to readable dates with time remaining
• Batch Parsing – Parse multiple Set-Cookie headers at once
• JSONエクスポート – Download parsed cookie data as structured JSON