# Undersheet

> Undersheet is a free Mac app for everyday website owners and web developers making SEO and AEO choices. It lets people inspect a website's original HTML, including text, headings, links, images, metadata and structured data, to see the content and structure beneath its visual design and what search engines, bots, crawlers and LLMs have to work with.

All app features are free, and the beta is available. Requires macOS 13 or later on Apple silicon or Intel. Unzip the download, then move Undersheet to Applications. Mac App Store availability is coming soon, with more features planned. Original HTML inspection does not prove provider access, indexing or how an LLM interprets a page, and does not guarantee ranking improvements.

Another Unpopular app on The Internet by Josh Withers.

Published by [Withers Co.](https://withers.co/).

## Website

- [Undersheet](https://undersheet.app/): Official website.
- [Introducing Undersheet](https://joshwithers.blog/2026/10/06/introducing-undersheet): Josh Withers explains why he built the app and who it is for.

## Download

- [Download the Mac beta](https://undersheet.app/downloads/Undersheet.zip): Stable ZIP download.
- [Download checksum](https://undersheet.app/downloads/Undersheet.zip.sha256): SHA-256 checksum for the ZIP.

## Optional

- [Unpopular](https://unpopular.au/)
- [The Internet](https://theinternet.com.au/)
- [Josh Withers](https://joshwithers.au/): Creator of Undersheet.