marketing by hashgraph-online
Image Optimization Analysis hashgraph-online/seo-images
Image optimization analysis for SEO and performance. Checks alt text, file sizes, formats, responsive images, lazy loading, and CLS prevention.
What it changes View full report → Passed 19 of 22 test cases with the skill, and 16 of 22 without it.
Without skill 74%
With skill 87%
Checks it passed that the model alone missed 3 fixed17 passed either way3 still failing0 broke
Pass-rate lift +13 pp
Tokens +205%
Agent turns 0%
Response time -25% Model gemini-3.6-flashMeasured 8/15/2026 v2 20 of 23 cases passed with skill · 22 comparable
Use this skill Claude Code DecimalAI agent CLI & files
Save it into your project's skills folder. Claude Code picks it up in its next session.
curl -fsSL --create-dirs -o .claude/skills/hashgraph-online-seo-images/SKILL.md https://app.decimal.ai/s/hashgraph-online-seo-images/SKILL.md Copy command Copy SKILL.md
Want it pinned and updatable? pip install "decimalai>=0.15", then decimalai skills add hashgraph-online-seo-images, and start Claude Code with claude --plugin-dir "$(git rev-parse --show-toplevel)/.agents"
Linked stays up to date: your agents get the author's new versions automatically.
Editable copy is yours to change; the author's updates won't reach it.
Install linked skill Create editable copy
1 · One-time — install the CLI (
docs ↗ )
$ pip install "decimalai>=0.15"Copy
2 · Get the skill — writes .agents/skills/hashgraph-online-seo-images/ and pins it in .decimal/skills.lock
$ decimalai skills add hashgraph-online-seo-imagesCopy
Copy link Copy README badge Copy SKILL.md No CLI? Get the same file — curl · raw file $ curl -fsSL --create-dirs -o .claude/skills/hashgraph-online-seo-images/SKILL.md https://app.decimal.ai/s/hashgraph-online-seo-images/SKILL.mdCopy
Safety checks: 3 of 3 passed
Code scan Clean Intent Passed Content Clean
Overview Benchmark Contents Activity Versions 2 Ratings 0
See it in action One of 2 test cases the skill fixed. Same model, same prompt, with and without the skill.
Prompt We have a content image inside a blog article that measures 250KB in file size. What status flag should it receive in an audit summary table?
What was checked, without and with the skill Checked Without skill With skill Flags the 250KB content image as a warning for exceeding 200KB
Show both answers
What's inside The instructions your model reads when the skill loads.
SKILL.md 391 lines single file
Image Optimization Analysis
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
Length: 10-125 characters
Good examples:
"Professional plumber repairing kitchen sink faucet"
"Red 2024 Toyota Camry sedan front view"
"Team meeting in modern office conference room"
Bad examples:
"image.jpg" (filename, not description)
"plumber plumbing plumber services" (keyword stuffing)
"Click here" (not descriptive)
File Size
Tiered thresholds by image category:
Recommend compression to target thresholds where possible without quality loss.
Format
When it activates Automatically, when a task matches.
Use when user says "image optimization", "alt text", "image SEO", "image size", or "image audit".
Track record Benchmark 19 / 22
test cases passed, vs 16 / 22 without
Adoption
Users 0
Times used 0 View activity → Safety and source details
SkillSafety ✓ 3 of 3 passed ✓ Code scan 15 of 15 checks clean
0 critical · 0 warning · 0 info — scanner v4 — 8/10/2026
View 15 scanner checks live_secret remote_code_execution reverse_shell data_exfiltration ssrf_metadata agent_snooping anti_refusal destructive_commands obfuscated_unicode unicode_homoglyph opaque_blob suspicious_url tool_overreach trigger_abuse prompt_injection_phrasing
✓ Intent Safe
LLM judge · does the skill do what it claims
✓ Content Clean
LLM judge · policy & harmful-content review
Source Imported hashgraph-online / awesome-codex-plugins
plugins/BestLemoon/codex-seo/skills/seo-images/SKILL.md
View on GitHub ↗ License MITImported 8/10/2026Version v2