About this tool
Review image-delivery headers before launch so critical assets are not served with weak cache directives, short TTL values, or repeat-byte overhead.
This SEO tool is built for pre-publish QA and implementation support rather than vague optimization advice. It helps teams check one search-facing signal cleanly before a page, template, or release goes live.
- Parses rows in URL|image|cache-control|age|max-age|status|context|bytes format and normalizes page URLs with an optional base URL.
- Flags missing cache-control headers, no-store/no-cache/private directives, and missing or low max-age values against configurable thresholds.
- Detects stale age conditions, status-response risks, and per-page critical uncached-byte overflow to prioritize high-impact fixes.
How to use Image Cache Checker
Enter the relevant metadata, markup, URL set, or export data into the tool above, then review the checks and corrected output. Use the result to fix the source template, CMS field, or deployment rule before shipping changes.
When this tool is useful
- Audit image response headers before launching CDN changes, template migrations, or performance-focused SEO releases.
- Catch missing cache-control policy, short max-age values, and blocking cache directives in one QA pass.
- Prioritize critical image rows where weak caching combines with large payload sizes and delivery status issues.
Practical tips
- Set longer max-age values for versioned static images, and pair fingerprinted assets with immutable when your deployment flow supports it.
- Avoid no-store, no-cache, or private directives on publicly cacheable image assets unless there is a strict compliance requirement.
- Track critical-image uncached byte totals per page so hero-template regressions are visible during pre-release QA.
Why people use this tool
Technical SEO work is usually about preventing avoidable mistakes before crawlers and users see them. Tools like this are most valuable when they make those checks concrete and fast.
Related search intents
image cache control checker, image caching header audit, cache-control max-age checker, image ttl seo checker.