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Key Features
Instant Calculation
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Raw HTTP response headers copied from browser dev tools or a curl command are just a block of text — parsing out the specific headers you care about by eye gets tedious for anything beyond a handful of lines.
This analyzer parses a block of raw HTTP headers into individual name/value pairs and highlights common headers like Content-Type, Server, and Cache-Control.
How it works
Paste raw HTTP headers, one per line, in the standard "Name: Value" format. The analyzer splits each line on its first colon into a name and value, then reports the total count and highlights a few commonly relevant headers.
- Enter raw HTTP headers.
- Click Calculate to see your results.
Examples
A typical response header block
Pasting "Content-Type: text/html", "Server: nginx", and "Cache-Control: no-cache" parses into 3 headers, with each common header identified individually.
Who should use it
- Quickly reviewing a server's response headers copied from browser dev tools.
- Checking caching or content-type configuration during web development debugging.
Industry applications
- Web development and debugging
- Server configuration and DevOps
Advantages
- Parses any number of headers in one step and counts them automatically.
- Highlights commonly relevant headers (Content-Type, Server, Cache-Control) automatically.
Limitations
- Does not fetch headers from a live URL — you must paste in already-captured header text.
Common mistakes to avoid
- Pasting headers without the "Name: Value" format (missing the colon), which prevents that line from being parsed as a header.
- Including the HTTP status line (like "HTTP/1.1 200 OK") as if it were a header — it will be skipped since it has no colon-separated name/value structure.
Best practices
- Copy the complete raw header block from your browser's dev tools or curl output for the most accurate analysis.
Tips
- If you're debugging a caching issue, pay close attention to the Cache-Control header specifically, since it controls how browsers and CDNs cache the response.