Standardmäßig ist der Prompt ausgewählt, der zuerst die Quelle prüft. Sie können zu einem direkten Befehl wechseln oder eine lokale Kopie herunterladen.
Quelldateien prüfen
Lesen Sie SKILL.md und alle von SkillsMP angezeigten Begleitdateien, bevor Sie sich für eine Installation entscheiden.
Mit Codex oder Claude installieren Kopieren Sie diesen Prompt, fügen Sie ihn in Codex, Claude oder einen anderen Assistant ein und lassen Sie die Skill-Seite prüfen und installieren.
Ein direkter Befehl überspringt den Prüf-Prompt. Prüfen Sie die Quelle, bevor Sie ihn ausführen.
Before gathering, check .seo-cache/ for reusable context from related SEO skills.
Reference: ../seo/references/shared-data-cache.md for schemas and dependency map.
Check these cache files when present:
.seo-cache/site-meta.json for domain, business type, industry, and crawl context
.seo-cache/audit-scores.json for prior full-audit priorities
.seo-cache/pages/{url-slug}/page-analysis.json for page-level context when a URL is provided
If found: parse and use clearly valid fields (note "Using cached [X] from [date]")
If missing, corrupt, or irrelevant: continue with fresh evidence
If the user says "refresh" or "re-run": ignore cache reads and overwrite on write
Checks
Alt Text
Present on all <img> elements (except decorative: role="presentation")
Descriptive: describes the image content, not "image.jpg" or "photo"
Includes relevant keywords where natural, not keyword-stuffed
Recommend compression to target thresholds where possible without quality loss.
Format
Format
Browser Support
Use Case
WebP
97%+
Default recommendation
AVIF
92%+
Best compression, newer
JPEG
100%
Fallback for photos
PNG
100%
Graphics with transparency
SVG
100%
Icons, logos, illustrations
Recommend WebP/AVIF over JPEG/PNG. Check for <picture> element with format fallbacks.
Recommended <picture> Element Pattern
Use progressive enhancement with the most efficient format first:
<picture><sourcesrcset="image.avif"type="image/avif"><sourcesrcset="image.webp"type="image/webp"><imgsrc="image.jpg"alt="Descriptive alt text"width="800"height="600"loading="lazy"decoding="async"></picture>
The browser will use the first supported format. Current browser support: AVIF 93.8%, WebP 95.3%.
JPEG XL: Emerging Format
In November 2025, Google's Chromium team reversed its 2022 decision and announced it will restore JPEG XL support in Chrome using a Rust-based decoder. The implementation is feature-complete but not yet in Chrome stable. JPEG XL offers lossless JPEG recompression (~20% savings with zero quality loss) and competitive lossy compression. Not yet practical for web deployment, but worth monitoring for future adoption.
Critical: Do NOT lazy-load above-the-fold/LCP images. Using loading="lazy" on LCP images directly harms LCP scores. Reserve loading="lazy" for below-the-fold images only.
decoding="async" for Non-LCP Images
Add decoding="async" to non-LCP images to prevent image decoding from blocking the main thread:
width and height attributes set on all <img> elements
aspect-ratio CSS as alternative
Flag images without dimensions
<!-- Good - dimensions set --><imgsrc="photo.jpg"width="800"height="600"alt="Description"><!-- Good - CSS aspect ratio --><imgsrc="photo.jpg"style="aspect-ratio: 4/3"alt="Description"><!-- Bad - no dimensions --><imgsrc="photo.jpg"alt="Description">
File Names
Descriptive: blue-running-shoes.webp not IMG_1234.jpg
Hyphenated, lowercase, no special characters
Include relevant keywords
CDN Usage
Check if images served from CDN (different domain, CDN headers)
Recommend CDN for image-heavy sites
Check for edge caching headers
Output
Image Audit Summary
Metric
Status
Count
Total Images
-
XX
Missing Alt Text
❌
XX
Oversized (>200KB)
⚠️
XX
Wrong Format
⚠️
XX
No Dimensions
⚠️
XX
Not Lazy Loaded
⚠️
XX
Prioritized Optimization List
Sorted by file size impact (largest savings first):
Image
Current Size
Format
Issues
Est. Savings
...
...
...
...
...
Recommendations
Convert X images to WebP format (est. XX KB savings)
Add alt text to X images
Add dimensions to X images
Enable lazy loading on X below-fold images
Compress X oversized images
Image SERP Analysis
When DataForSEO MCP is available, enhance the image audit with competitive data.
/seo images serp <keyword>
Cross-reference on-page images with Google Images SERP rankings.
Workflow:
Fetch Google Images results via serp_google_images_live_advanced (depth=100)
Extract: top domains, image types, alt text patterns
Output competitor image SERP landscape
Output:
Rank
Domain
Title/Alt
Image URL
Page URL
1
example.com
"Blue running shoes..."
.../shoes.webp
/products/...
Analysis includes:
Domain dominance: which sites own the most image positions (top 10 by count)
Alt text patterns: common title/alt patterns in top-ranking images
Format distribution: WebP vs JPEG vs PNG in top results
Opportunity score: keywords where you have page rankings but no image presence
If DataForSEO MCP is not available, inform user and suggest installing the extension.
Image File Optimization
Optimize image files for SEO: format conversion, metadata injection, compression.
/seo images optimize <path>
Optimize image file(s) for web and SEO. Converts to WebP/AVIF, injects IPTC
metadata, compresses, and generates responsive variants.
Google Images displays IPTC Creator, Credit Line, and Copyright in search results.
This is NOT a ranking factor but improves rich result display and brand attribution.
IMPORTANT: WebP supports EXIF and XMP but NOT IPTC natively. For WebP files,
use XMP fields instead of IPTC. exiftool handles this conversion automatically.
Report connection error with status code. Suggest verifying URL and checking if site requires authentication.
No images found on page
Report that no <img> elements were detected. Suggest checking if images are loaded via JavaScript or CSS background-image.
Images behind CDN or authentication
Note that image files could not be directly accessed for size analysis. Report available metadata (alt text, dimensions, format from markup) and flag inaccessible resources.
exiftool not installed
Fall back to ImageMagick for metadata. Recommend: sudo apt install libimage-exiftool-perl
cwebp not installed
Fall back to ImageMagick or FFmpeg for WebP conversion. Recommend: sudo apt install webp
DataForSEO MCP not available
Skip Image SERP Analysis section. Note extension is not installed.
Write to shared data cache
After completing all work, write a concise JSON summary to .seo-cache/ when the workflow produced durable findings.
Use the schemas and naming rules in ../seo/references/shared-data-cache.md; include at least cache_type, analyzed_at, source URL/domain, key findings, issues, recommendations, and tool limitations. Add .seo-cache/ to .gitignore if it is missing.
