A guide for making website images smaller, faster to load, and easier for search engines to understand. It covers image descriptions, formats, responsive sizing, loading behavior, layout shifting, and search visibility.

Use it to audit alt text, image sizes and formats, lazy loading, responsive images, CLS prevention, image search rankings, and WebP or AVIF conversion.

It helps reduce slow pages and missing image context, while preventing images from unexpectedly moving surrounding content as they load.

seo-images — Skill for Claude Code by AgriciDaniel/seo-os

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add AgriciDaniel/seo-os --skill seo-images

Clone the repo

git clone --depth 1 https://github.com/AgriciDaniel/seo-os

Made for: Claude Code.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/agricidaniel/seo-os/seo-images/github.svg)](https://agentmods.dev/skills/agricidaniel/seo-os/seo-images)

Your own site

<a href="https://agentmods.dev/skills/agricidaniel/seo-os/seo-images"><img src="https://agentmods.dev/badge/skills/agricidaniel/seo-os/seo-images/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/agricidaniel/seo-os/seo-images"><img src="https://agentmods.dev/badge/skills/agricidaniel/seo-os/seo-images.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 108 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 3,299 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.

Origin unknown No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00108	$0.03299
Opus 5.5	$0.00043	$0.01320
Sonnet 5.5	$0.00022	$0.00660
Haiku 4.5	$0.00011	$0.00330

Measured 2mo ago against content hash de23e227e425, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

seo-images scanned grade A with 1 finding against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Asks for rootlowPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

- `exiftool` -- EXIF/IPTC/XMP read/write (install: `sudo apt install libimage-exiftool-perl`)

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

vendored/claude-seo/skills/seo-images/SKILL.md · 354 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

Read it on GitHub

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

LICENSE.txt 143 B

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

2mo ago First seen · 354 lines · 108 tokens per session scan A de23e227e425

Subscribe to this mod's changes

seo-images is a skill published in the GitHub repository AgriciDaniel/seo-os (149 stars, last pushed 4mo ago), licensed AGPL-3.0. It adds 108 tokens to every session and 3,299 once invoked, about $0.0004 per session on Opus 5.5. A static security scan graded it A with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

Marketing and SEO

seo-images next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
seo-imagesAgriciDaniel/seo-os	Skill	149	4mo ago	AGPL-3.0	A	108	Claude Code
imagegenopenai/codex	Skill	133k	yesterday	Apache-2.0	A	113	Codex
playwright-climicrosoft/playwright	Skill	99k	yesterday	Apache-2.0	A	19	Claude Code
local-ai-agentsmicrosoft/ai-agents-for-beginners	Skill	79k	4d ago	MIT	A	200	Claude Code, Codex
systematic-debuggingobra/superpowers	Skill	313k	3d ago	MIT	A	21	Claude Code
next-cache-components-adoptionvercel/next.js	Skill	143k	yesterday	MIT	A	95	Claude Code
next-partial-prefetching-adoptionvercel/next.js	Skill	143k	yesterday	MIT	A	103	Claude Code

seo-images

Getting it into your agent

Wrote this? Show the measurements

What it costs to keep this loaded

Grade A, and why

Asks for rootlowPrivilege escalation

The source is not reproduced here

Licensed AGPL-3.0

What ships with it

What this file has done since we first saw it

seo-images compared with skills from other repositories