Guides
Practical browser tasks, explained properly
Each guide answers one task completely, including the console snippets, the limits of the free methods, and where they stop working. No sign-up, no email gate.
- How to export a table from a website to Excel or CSVFour ways to get a web table into Excel or Google Sheets, with the exact console snippet, what each method costs you, and how to handle pagination, merged cells and hidden rows.
- How to check a page's heading structureSee every H1-H6 on a page in order, spot skipped levels and missing headings, and understand which heading problems actually matter for accessibility and search.
- How to check structured data on a pageFind every JSON-LD block on a page, catch parse errors and missing required fields, and learn which schema mistakes actually cost you rich results.
- How to overlay a design mockup on a live pagePut a Figma export or PNG on top of a real page at exact scale, then find the one-pixel drift that screenshots miss. Includes a console method and the settings that matter.
- How to change HTTP headers in ChromeWhat you can and cannot change from inside Chrome, how Manifest V3 extensions modify request and response headers, and when you need a proxy instead.
- How to back up and restore Chrome tab groupsWhat Chrome restores on its own, where it fails, and three ways to keep a real backup of tab groups and windows before you lose them.