Developer / Debugging
HTTP Header Parser
Parse raw request or response headers into readable rows and grouped JSON directly in your browser. Parse raw request or response headers into a readable table, grouped JSON, or cleaned header list directly in the browser.
6
Header rows
5
Unique names
1
Duplicates
0
Skipped lines
Loaded request sample
Quick notes
The first line is treated as a request line or status line when it does not contain a colon.
Repeated headers such as `Set-Cookie` or `X-Forwarded-For` stay preserved.
Grouped JSON output is useful when you want to inspect duplicates without scanning raw lines.
Filter by header name or value, then copy the reduced set as JSON, raw headers, or curl args.
Output
Start line
GET /api/tools?group=developer HTTP/1.1
Host
trytoolport.com
Accept
application/json
Accept-Language
en-US,en;q=0.9
Cache-Control
no-cache
X-Forwarded-For
203.0.113.10
X-Forwarded-For
203.0.113.11
Common headers found
Grouped JSON preview
{
"Host": "trytoolport.com",
"Accept": "application/json",
"Accept-Language": "en-US,en;q=0.9",
"Cache-Control": "no-cache",
"X-Forwarded-For": [
"203.0.113.10",
"203.0.113.11"
]
}curl header args
-H "Host: trytoolport.com" -H "Accept: application/json" -H "Accept-Language: en-US,en;q=0.9" -H "Cache-Control: no-cache" -H "X-Forwarded-For: 203.0.113.10" -H "X-Forwarded-For: 203.0.113.11"
Why this gets reused
People keep pasting raw request and response headers while debugging APIs, edge caches, and auth flows.
Grouped JSON makes duplicate headers much easier to inspect than a wall of raw text.
Preserving the start line keeps the tool useful for both request and response snippets.
Header filtering and curl-ready output make it much easier to move from inspection into reproduction.
Strong first-use cases
Inspecting duplicated `Set-Cookie` or forwarding headers from a raw response dump.
Cleaning request headers before sharing them in a ticket or issue.
Turning copied browser or proxy headers into a more structured debug view.