Audit & SEO 7 min read 2026-07-14 ImgEx Engineering Team

How to Audit Website Images

Learn how to audit website images for broken links, slow load times, missing alt text, and uncompressed payloads.

Key Takeaways

Unoptimized images are the #1 cause of poor Largest Contentful Paint (LCP).
Auditing reveals missing alt attributes, 404 broken links, and oversized assets.
ImgEx provides dimensions, file weights, and format breakdowns for every image.

Instant Image Extraction

Audit your website images today

Use our free online image extractor to scan your site and inspect dimensions, formats, and file weights.

Audit Website Images

Topic Pathway: Formats, Product Scraping & Compliance

This guide is part of our comprehensive collection on formats, product scraping & compliance. Explore the structured learning path below:

Find and download WebP images on modern websites Extract SVG vector graphics and icons from websites Extract product images from ecommerce stores and catalogs Audit website images for broken links, file size, and SEO Optimize and compress images after extraction for faster loading Learn copyright rules and legal guidelines for downloading website images

Images account for more than 60% of total webpage payload. Conducting regular technical image audits ensures fast page speed, high Core Web Vitals, and strong Google SEO rankings. Learn how to audit website images effectively.

Checklist for Website Image Audits

File Size Check: Ensure hero images are under 200 KB and thumbnails under 50 KB.

Format Modernization: Convert legacy PNG/JPG files to WebP. See image formats explained: JPG vs PNG vs WebP.

Missing Alt Attributes: Ensure all informative images have descriptive alt text for accessibility.

Optimization Pipeline: Follow our guide on how to optimize images after extraction to compress assets.

Frequently Asked Questions

How does ImgEx help with image audits?

ImgEx displays exact pixel dimensions, file formats, and estimated file weights for every asset on a target URL.

Explore All 30 Image Guides Use Website Image Extractor

Recommended Extraction Workflows & Guides

Deepen your knowledge with related tutorials curated for high-resolution image discovery.

All Guides →

Image Extraction & Scrapers

Master extracting photos, logos, vectors, and media URLs from any public webpage.

→ Learn how to extract images from a website step-by-step → Download images directly from any webpage or asset URL → Extract and export image URLs from a webpage to CSV or text

Bulk Image Downloading & Archiving

Archive dozens or hundreds of images simultaneously into organized ZIP packages.

→ Use our bulk image downloader tutorial to save batches of images → Download multiple images at once without clicking one by one → Save all images from a website without freezing your browser

CSS, Lazy Loading & Hidden Media

Extract complex assets hidden behind JavaScript frameworks, stylesheets, and viewports.

→ Extract lazy-loaded images and responsive srcset sources → Find hidden images on a webpage across DOM layers → Extract images from CSS stylesheets and external rules

Formats, Product Scraping & Compliance

Understand WebP/SVG formats, ecommerce product extraction, SEO audits, and copyright rules.

→ Find and download WebP images on modern websites → Extract SVG vector graphics and icons from websites → Extract product images from ecommerce stores and catalogs