Compare software

VisBugPesticide
Free

The open-source extension is available without a license fee.

 Free

Free and open source under the MIT licence.

Web, Browser extension Browser extension
  • Edit spacing, type and colour on a live page without touching developer tools
  • Measurement and accessibility inspection built into the same toolbar
  • Makes layout overflow and nesting mistakes obvious instantly
  • Available as a bookmarklet, so no extension is required
  • Changes are temporary and vanish on reload
  • Complex layouts can behave unpredictably when dragged
  • Outlines change layout slightly on elements without a box-sizing reset
  • Simple by design; developer tools do more
Browser extension Browser extension
Open source Open source
License: Apache-2.0 License: MIT
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 22, 2026

Checked September 22, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.