Guide · Agent skill
How to use the Text Compression Auditor agent skill
Updated · written with AI from the project's own documentation and checked against our catalogue data
The Text Compression Auditor is an agent skill, a set of instructions that a Claude agent loads when your request matches its purpose. This guide explains what the compression skill makes the agent check, how to install it, how to ask for it in plain language, and where it stops. After reading, you should be able to install the skill, trigger it, and judge whether its advice fits your site.
Text Compression Auditorthedaviddias/Front-End-Checklist · MIT Download the skill Quick start
- 1Download the ZIP. Download the skill as a ZIP file from the page where you found it.
- 2Unzip into a skills folder. Unzip it into ~/.claude/skills/ for personal use, or into .claude/skills/ inside your project for project use.
- 3Or upload it in the Claude apps. In the Claude apps, go to Settings, then Capabilities, then Skills, and upload the ZIP.
- 4Ask about slow loading. Describe the slow page or compression problem in plain language and mention the site or page.
- 5Verify and apply the fix. Confirm the headers and bottleneck yourself, then apply any server or CDN change the agent suggests.
What the compression skill makes the agent do
The skill covers one performance topic: whether text-based files are sent compressed. Its focus is HTML, JavaScript and CSS. Compressed files are smaller on the network, which can reduce load time, especially on slower mobile connections.
The agent is told to check that these resources are served with a Content-Encoding header showing gzip or br (Brotli). If they are not, it suggests enabling Gzip or Brotli in your web server, such as Nginx or Apache, or in your CDN settings.
- Checks text resources (HTML, JS, CSS) for gzip or br encoding
- Suggests server or CDN changes when compression is missing
- Asks that the real bottleneck is confirmed in DevTools, Lighthouse or field data before changes are recommended
Content-Encoding: gzip
Content-Encoding: brHow to install the Text Compression Auditor skill
Download the skill as a ZIP from the page where you found it. Then choose one of the two install locations below. A personal install works for every project on your computer. A project install applies only to the project folder you choose.
You can also upload the skill through the Claude apps. The ZIP is the same either way.
- Personal: unzip the download into ~/.claude/skills/
- Project: unzip the download into the .claude/skills/ folder inside your project
- Claude apps: go to Settings, then Capabilities, then Skills, and upload the ZIP
How to trigger the skill with natural requests
You do not need a special command. The skill is meant to be picked up when your request is about slow page loads, heavy assets, or rendering delays related to text compression. Describe the problem in your own words and mention the page or site if you have one.
If the agent does not use the skill, name the topic directly, for example by saying you want a compression audit. Asking it to confirm the bottleneck first will match the skill's own workflow.
- Why does my homepage load slowly on mobile? Check whether my HTML, JS and CSS are compressed.
- Audit this site's text compression and tell me if gzip or Brotli is missing.
- Is my CDN compressing my CSS and JavaScript? Check the Content-Encoding headers.
- Run a performance audit of my page against the front-end checklist, focusing on compression.
What to expect from the agent's answer
A good answer names the files it checked and the headers it saw. It should also say how the bottleneck was confirmed, using DevTools, Lighthouse or field data, since the skill asks for this before it recommends changes.
If compression is already on, the agent should say so and look elsewhere. The skill notes that compression reduces network cost but does not remove parse and execution cost from large bundles, so a heavy JavaScript problem may need other tools or a different fix.
- Lists which text resources were checked and what encoding they returned
- Names the measurement method used to confirm the issue
- Gives server or CDN suggestions for Nginx, Apache or your CDN if compression is missing
What the skill needs and safety notes
The skill lists no requirements. It does not run scripts and does not use the network, so it only reads the instructions and its reference file, and the agent works from what you give it. The skill only advises. It will not change your server settings, and any fix is applied only if you apply it yourself.
The skill's reference file includes example configurations, such as Nginx gzip and Brotli directives and an Express.js compression middleware example. Treat these as examples to adapt and test, not as settings to copy blindly into production.
- Requirements: none listed
- Runs scripts: no
- Uses network: no
- Only advises; you make and test any server change
Tips and limits
Give the agent real evidence where you can, such as a DevTools Network screenshot or a Lighthouse report. The skill is built to verify before recommending, so better inputs produce more useful answers.
Know what the skill does not cover. It is not for images, video or other binary files. If your main problem is large bundles or rendering, expect the compression advice to be only part of the story.
- Include the page URL and the device or network you tested on
- Check the headers yourself in DevTools before changing anything
- Do not expect image or video optimisation from this skill
What people use it for
- Finding out why a page loads slowly on mobile when HTML, JS or CSS may be sent uncompressed
- Reviewing hosting or CDN settings to see whether gzip or Brotli is enabled
- Running a performance audit against a front-end checklist and noting compression gaps
- Preparing a list of Nginx or Apache compression changes to hand to a server admin
Frequently asked questions
How do I install the Text Compression Auditor agent skill?
Download the ZIP from the page where you found the skill and unzip it into ~/.claude/skills/ for personal use, or into .claude/skills/ inside a project. You can also upload the ZIP in the Claude apps under Settings, then Capabilities, then Skills.
Does the compression skill need anything else installed?
The skill lists no requirements. It does not run scripts and does not use the network, according to its listing.
Is the compression skill free to use?
The source does not state pricing. It is published under the MIT licence, which is listed on the skill's page.
Will the skill change my server settings for me?
No. The skill only advises. Any change to Nginx, Apache or a CDN has to be applied by you.
How is this different from just checking compression in DevTools?
The skill gives the agent a fixed checklist: check Content-Encoding for gzip or br on text files, confirm the real bottleneck with DevTools, Lighthouse or field data, then suggest a server or CDN fix. You can do the same checks by hand, and the skill helps organise them.
Why isn't compression fixing my slow page?
The skill notes that compression reduces network transfer but does not remove parse and execution cost from oversized JavaScript bundles or rendering delays. If those are the bottleneck, you will need other tools or fixes.
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Our verdict
Use this skill if you want an agent to check text compression on a page and suggest gzip or Brotli fixes for Nginx, Apache or a CDN, with a habit of confirming the bottleneck first. Pick something else if your problem is large bundles, rendering, or images and video, since this skill does not address those.
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