About this tool
Review image exports before publishing so oversized payloads, inefficient formats, and compression gaps do not weaken Core Web Vitals or crawl rendering efficiency.
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|size|format|context|dimensions format and normalizes relative URLs using an optional base URL.
- Flags oversize and severe oversize assets by context-specific budgets for hero, content, and thumbnail image types.
- Checks format modernity, byte density, and estimated transfer savings so teams can prioritize high-impact optimizations.
How to use Image Size 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 export payloads before launching new templates, campaigns, or migration batches.
- Identify hero and content images that exceed transfer budgets and likely pressure LCP.
- Prioritize rows where format choice and compression density suggest immediate optimization wins.
Practical tips
- Set distinct size targets for hero, content, and thumbnail assets rather than one global KB limit.
- Treat non-modern formats as candidates for AVIF or WebP, then retest quality at lower byte budgets.
- Include dimensions in your input so bytes-per-pixel checks can separate valid detail from compression waste.
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 file size checker, image weight audit seo, large image seo checker, image performance seo audit.