Tailwindcss Development
anonaddy/anonaddy
Always invoke when the user's message includes 'tailwind' in any form.
A skill your agent uses when reviewing an HTTPS page for resources (scripts, images, stylesheets, iframes) that are loaded over plain HTTP.
Install Mixed Content
$ npx skills add thedaviddias/Front-End-Checklist --skill mixed-content -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install thedaviddias/Front-End-Checklist mixed-content --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/mixed-content .claude/skills/mixed-content && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "mixed-content" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/mixed-content into .claude/skills/mixed-content/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mixed-content", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/mixed-contentType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add thedaviddias/Front-End-Checklist --skill mixed-content -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install thedaviddias/Front-End-Checklist mixed-content --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/mixed-content .agents/skills/mixed-content && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "mixed-content" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/mixed-content into .agents/skills/mixed-content/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mixed-content", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add thedaviddias/Front-End-Checklist --skill mixed-content -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install thedaviddias/Front-End-Checklist mixed-content --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/mixed-content .cursor/skills/mixed-content && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "mixed-content" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/mixed-content into .cursor/skills/mixed-content/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mixed-content", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/thedaviddias/Front-End-Checklist.git --path skills/mixed-content--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add thedaviddias/Front-End-Checklist --skill mixed-content -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install thedaviddias/Front-End-Checklist mixed-content --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/mixed-content .gemini/skills/mixed-content && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "mixed-content" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/mixed-content into .gemini/skills/mixed-content/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mixed-content", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install thedaviddias/Front-End-Checklist mixed-contentInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add thedaviddias/Front-End-Checklist --skill mixed-content -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/mixed-content .github/skills/mixed-content && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "mixed-content" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/mixed-content into .github/skills/mixed-content/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mixed-content", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add thedaviddias/Front-End-Checklist --skill mixed-content -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install thedaviddias/Front-End-Checklist mixed-content --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/mixed-content .opencode/skills/mixed-content && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "mixed-content" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/mixed-content into .opencode/skills/mixed-content/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "mixed-content", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
Facts
- Skill name
mixed-content- GitHub stars
- 74k
- Token cost
- ~579 tokens
- SKILL.md length
- 261 words
- Files
- 2 (incl. references)
- Skills in repo
- 390
- Repo updated
- First seen
- Licence
- MIT
At a glance
A skill your agent uses when reviewing an HTTPS page for resources (scripts, images, stylesheets, iframes) that are loaded over plain HTTP.
- Reviewing an HTTPS page for resources (scripts
- SKILL.md covers Quick Reference, Check, Fix and Explain, plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Iframes) that are loaded over plain HTTP
What it does
Mixed Content is an agent skill from thedaviddias/Front-End-Checklist. Use when reviewing an HTTPS page for resources (scripts, images, stylesheets, iframes) that are loaded over plain HTTP.
Its SKILL.md is about 580 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/rule.md`).
It sits in Frontend & Design, covering CSS and styling. The repository describes itself as: 🗂 The essential checklist for modern web development, for humans and AI agents. The licence is MIT.
When your agent uses it
- Reviewing an HTTPS page for resources (scripts
- Iframes) that are loaded over plain HTTP
Example prompts
- “/mixed-content”
What it can do on your machine
Read from SKILL.md and the folder at commit e8d14d0. It shows what the files ask for, not the result of running them.
Tool permissions
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
frontendchecklist.io
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
Mixed Content loads about 579 tokens when it runs, and up to ~1.9k if it reads all its reference files. Until then it costs about 33 tokens; SKILL.md has 261 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
Safety
Auto-check passed
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
SKILL.md
The full file from thedaviddias/Front-End-Checklist at commit e8d14d0, republished under its MIT licence (© thedaviddias). 261 words, ~579 tokens.
Download SKILL.mdSave it as
.claude/skills/mixed-content/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- mixed-content
- description
- Use when reviewing an HTTPS page for resources (scripts, images, stylesheets, iframes) that are loaded over plain HTTP.
- metadata.category
- security
- metadata.priority
- high
- metadata.difficulty
- intermediate
- metadata.estimatedTime
- 20
- metadata.source
- frontendchecklist.io
- metadata.url
- https://frontendchecklist.io/rules/security/mixed-content
Avoid mixed content on HTTPS pages
Active mixed content (scripts loaded over HTTP into an HTTPS page) gives network attackers the ability to execute arbitrary JavaScript on your page — the same power as XSS, despite the page itself being served over HTTPS.
Quick Reference
- Active mixed content (scripts, iframes, stylesheets) is blocked outright by all modern browsers
- Passive mixed content (images, audio, video) triggers a security warning and may be upgraded or blocked
- Use
upgrade-insecure-requestsCSP directive to automatically upgrade HTTP sub-resources to HTTPS - Audit all hardcoded
http://URLs in HTML, CSS, and JavaScript - The
Content-Security-Policy: upgrade-insecure-requestsdirective is the most practical fix for legacy content
Check
Scan the page source and network requests for any HTTP resources loaded on an HTTPS page. Check <script src>, <img src>, <link href>, <iframe src>, and CSS url() values for http:// URLs. Also check the Content-Security-Policy header for the upgrade-insecure-requests directive.
Fix
Replace all http:// resource URLs with https:// equivalents. If the resource provider does not support HTTPS, host the resource yourself or find an alternative. Add Content-Security-Policy: upgrade-insecure-requests as a safety net for any remaining HTTP URLs.
Explain
Explain the difference between active and passive mixed content, why active mixed content is blocked by browsers, and how the upgrade-insecure-requests CSP directive works.
Code Review
Review server config, headers, forms, and integration points related to Avoid mixed content on HTTPS pages. Flag exact responses, cookies, or browser behaviors that violate the rule, and verify them against the effective production-like response.
For full implementation details, code examples, and framework-specific guidance,
see references/rule.md.
Rule page: https://frontendchecklist.io/rules/security/mixed-content
© thedaviddias, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file (references) in skills/mixed-content of thedaviddias/Front-End-Checklist.
- SKILL.md
- references/rule.md
Open the folder on GitHubat commit e8d14d0
Compare with similar skills
Mixed Content next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Mixed Content this skillthedaviddias/Front-End-Checklist | 74k | — | ~579 | Automated safety check: Pass | MIT | |
| Tailwindcss Developmentanonaddy/anonaddy | 4.9k | 10 repos | ~865 | Automated safety check: Pass | MIT | |
| UI StylingOhh-889/skyroc | 795 | 13 repos | ~2.5k | Automated safety check: Pass | MIT | |
| MCP Developmentcoollabsio/coolify | 63k | 1 repos | ~949 | Automated safety check: Pass | MIT | |
| Web Animation DesignbaptisteArno/typebot.io | 11k | 2 repos | ~2.7k | Automated safety check: Pass | Custom licence | |
| UI UX Pro Maxsaoudi-h/solar-icons | 190 | 18 repos | ~11k | Automated safety check: Notes | Custom licence |
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Related
Categories
Questions about Mixed Content
What does Mixed Content do?
A skill your agent uses when reviewing an HTTPS page for resources (scripts, images, stylesheets, iframes) that are loaded over plain HTTP. Mixed Content is an agent skill from thedaviddias/Front-End-Checklist. Use when reviewing an HTTPS page for resources (scripts, images, stylesheets, iframes) that are loaded over plain HTTP.
When should I use Mixed Content?
Mixed Content fits situations like: reviewing an HTTPS page for resources (scripts; iframes) that are loaded over plain HTTP.
How do I install Mixed Content in Claude Code?
Run `npx skills add thedaviddias/Front-End-Checklist --skill mixed-content -a claude-code`. Or copy the skill folder (skills/mixed-content in thedaviddias/Front-End-Checklist) into .claude/skills/mixed-content in your project. Claude Code loads it when a task matches its description.
How do I install Mixed Content in Codex?
Run `npx skills add thedaviddias/Front-End-Checklist --skill mixed-content -a codex`. Or copy the skill folder (skills/mixed-content in thedaviddias/Front-End-Checklist) into .agents/skills/mixed-content in your project. Codex loads it when a task matches its description.
Can I use Mixed Content in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add thedaviddias/Front-End-Checklist --skill mixed-content -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/mixed-content, .gemini/skills/mixed-content, .github/skills/mixed-content and .opencode/skills/mixed-content in your project.
What does Mixed Content need to run?
SKILL.md names no scripts, command-line tools or credentials: Mixed Content is instructions for the agent only.
Does Mixed Content access the network?
SKILL.md names 1 domain. As links in the text: frontendchecklist.io. This is read from the text; nothing was executed.
Is Mixed Content safe to install?
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
What licence does Mixed Content use?
Mixed Content is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does Mixed Content use?
About 579 tokens (SKILL.md is roughly 2.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 1.3k tokens, read only when the agent opens those files.
What are the alternatives to Mixed Content?
Skills that share tags, products or a category with Mixed Content: Tailwindcss Development (anonaddy/anonaddy, 4.9k stars), UI Styling (Ohh-889/skyroc, 795 stars), MCP Development (coollabsio/coolify, 63k stars) and Web Animation Design (baptisteArno/typebot.io, 11k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains Mixed Content?
thedaviddias (a GitHub user) maintains it in thedaviddias/Front-End-Checklist, which has 74,421 GitHub stars. The repository holds 390 skills in this directory. The repository was last updated on October 6, 2026.
Source: thedaviddias/Front-End-Checklist on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.