Mixed Content Audit

Mixed Content / HTTPS Audit

Audit an HTTPS site for insecure (http://) resources and produce an actionable report. Mixed content breaks pages and strips the padlock; this skill finds every instance and groups it by root cause.

When to use this skill

Use this skill when the user asks to:

• Audit or fix mixed content / the browser "Not secure" warning
• Find http:// scripts, styles, iframes, images, or media on https:// pages
• Verify an HTTPS migration is complete
• Find insecure form actions

Inputs to collect

1. Site URL or URL list — a live https:// site root to crawl (auto-seeds

from /sitemap.xml), or a text file with --url-list.

1. Scope — pages to crawl (default 500, --max-pages).

Workflow

Step 1: Crawl and inventory subresources

Use scripts/extract_resources.py:

python3 scripts/extract_resources.py https://example.com --max-pages 500 --output resource_inventory.json
# already crawled once (e.g. in a full SEO audit)? skip the crawl and reuse the shared cache:
# python3 scripts/fetch_pages.py https://example.com --output page_cache.json
# python3 scripts/extract_resources.py --from-cache page_cache.json --output resource_inventory.json

For every page it records each subresource (scripts, stylesheets, images, iframes, media, embeds, form actions) with its tag, attribute, resolved URL, and scheme.

Step 2: Run the audit checks

python3 scripts/audit_resources.py resource_inventory.json --output audit_report.json

Step 3: Evaluate the audit checks

Evaluate each check in references/audit-checks.md. Core checks:

| Check | Severity | |---|---| | Active mixed content (script/style/iframe/object over http) | High | | Insecure form action (http) | High | | Passive mixed content (img/audio/video over http) | Medium | | Protocol-relative (//) resource | Low | | Page served over http | Info |

Step 4: Produce the report

Write a report following references/report-template.md: summary by severity, active mixed content and insecure forms first, then passive, grouped by the host serving the insecure resource, and a prioritized action list.

Step 5: Recommend fixes

• Active/passive mixed content: load the resource over https:// (most hosts

already support it — just change the scheme), self-host it, or remove it.

• Insecure form action: change the action to https://.
• Protocol-relative URLs: make them explicit https://.
• Insecure pages: fix the site-wide HTTPS redirect at the source (cross-check

the redirect-audit skill).

• Group fixes by host — one insecure CDN usually explains many rows.
• Base every recommendation on the crawled inventory; never invent URLs.

Optional: export the report

As a Word document (.docx)

If the user wants the report as a .docx (for example, to share with stakeholders or attach to a ticket), save the Markdown report to a file and convert it:

python3 scripts/md_to_docx.py report.md --output report.docx

scripts/md_to_docx.py uses only the Python standard library (no pip install) and renders headings, tables, lists, links, bold/italic, and code blocks. Offer this whenever a user asks for a Word doc, a .docx, or a shareable/downloadable report.

As a CSV of findings (.csv)

If the user wants the raw findings as a spreadsheet (for filtering, sorting, or triage in Sheets or Excel), convert the audit's audit_report.json directly:

python3 scripts/findings_to_csv.py audit_report.json --output findings.csv

scripts/findings_to_csv.py is also standard-library only. It writes one row per finding, with check and severity columns prepended and list fields (e.g. the pages sharing a duplicate value) joined with ; . Unlike the .docx, which reformats the written report, the CSV is a direct dump of the structured findings — offer it whenever a user wants the data itself, a spreadsheet, or to slice findings by check or severity.

Resources

• scripts/md_to_docx.py — convert the Markdown report into a Word (.docx) document (standard library only)
• scripts/findings_to_csv.py — flatten the audit findings JSON into a CSV, one row per finding (standard library only)
• references/audit-checks.md — full definitions and rationale
• references/report-template.md — report output structure
• scripts/extract_resources.py — crawl and inventory subresources
• scripts/audit_resources.py — run mixed-content audit checks

Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

• Author: JakeLabate
• Source: JakeLabate/Claude-SEO-Skills
• License: MIT
• Homepage: https://www.jakelabate.com/claude-seo-skills/

Install and usage instructions live in the source repository linked above.