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Http Vary Header Builder

Build case-insensitive deduplicated Vary field names, or explicit *. The source device hint is Sec-CH-UA-Mobile. No selections means omit Vary rather than emit an empty value. Vary partitions cache selection; it does not configure CORS, privacy or actual response caching.

http-vary-header-builderLOCAL WORKSPACE

Enabling local controls…

Inputs and settings

Processed in this tab without uploading or storing inputs. Each text field is limited to 32 KiB and complete output to 1 MiB; additional format and model limits apply.

Results

Review the settings and run. Editing inputs clears old results.

Processing model and limits

Build case-insensitive deduplicated Vary field names, or explicit *. The source device hint is Sec-CH-UA-Mobile. No selections means omit Vary rather than emit an empty value. Vary partitions cache selection; it does not configure CORS, privacy or actual response caching.

Data and model checked: RFC 9110 Vary ↗Source tool controls ↗

How to use this tool

Load the example, confirm field units and processing rules, then run locally. Editing any input clears the old result. Copy or download the complete output explicitly.

When not to use it

Build case-insensitive deduplicated Vary field names, or explicit *. The source device hint is Sec-CH-UA-Mobile. No selections means omit Vary rather than emit an empty value. Vary partitions cache selection; it does not configure CORS, privacy or actual response caching.