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DEVELOPER BENCH
Read newline-separated `Name: Value` header lines and return a structured local record with duplicate-name and potentially sensitive-name markers.
WHAT THIS DOES
Runs entirely in your browser.
/tools/http-header-analyzerhttp-header-analyzerv4.0.0LOCAL · LOCAL RUNIMPLEMENTED — This workbench is functional in the current release.Presets for this workbench
No preset yet. A preset stores the values in this form — never the result — and only for workbenches that run entirely in your browser.
Collections
Saved on this device only. Turn on sync to carry them to another device.
BATCH / ONE VALUE PER LINE
Up to 200 lines, one at a time, in this browser. Each line takes the place of headers and everything else stays as you set it. Nothing is uploaded, and the row limit is not exceeded silently.
METHOD / LOCAL RUN
A local line parser splits the first colon, normalizes header names, groups duplicates, and labels names such as authorization, cookie, and set-cookie as sensitive.
Boundary: No URL is fetched and no server response is inspected. The labels are not a security audit, policy decision, CORS analysis, or guarantee that a header is safe to share.
The calculation or transformation runs in your browser using the values entered above. No input is sent to UtilityForge for this tool.
EXAMPLES / LOCAL RUN FIXTURES
FAQ
No URL is fetched and no server response is inspected. The labels are not a security audit, policy decision, CORS analysis, or guarantee that a header is safe to share.
No. This published tool runs locally in your browser. UtilityForge does not send the values entered in this workbench to a server.
No. This workbench runs in the page: Header lines are read by the code your browser already downloaded, and UtilityForge receives neither the values nor the result.
Yes, and it is enforced rather than advertised: Header lines (100,000 characters). The limit is a browser input limit on a tool that runs on this device, so nothing is truncated after being sent anywhere.
RELATED TOOLS
LOCAL — Runs entirely in your browser.
COMMON USE CASES / SOURCE NOTE
Last reviewed:
Source information: Local string parsing only; UtilityForge does not send headers, make requests, inspect a remote response, or provide a security audit.