Frontend quality, in one place

Fast and accessible should be the same standard.

Harpoon gives teams deterministic tools for frontend Performance and Accessibility, organized around the websites they ship.

Explore Performance Explore Accessibility

01 — Products

Separate results. One website context.

Performance and Accessibility answer different questions, so Harpoon keeps their evidence and scores distinct while bringing the work together around a project.

HARPOON PERFORMANCE

Find the requests slowing a page down.

Capture a URL or open a HAR. The deterministic engine scores the load and names the highest-value fixes; AI only explains the curated findings.

Analyze a page How Performance works →

HARPOON ACCESSIBILITY

Find WCAG failures where you build.

Mend by Harpoon audits the active browser tab locally and puts the fix first. Saved audit history and issue evidence now live beside Performance in each website project.

Meet Mend by Harpoon →

02 — Start with the page in front of you

Useful before setup. More powerful when your team is ready.

Analyze performance without an account, or run unlimited local accessibility audits with the extension. Sign in when you want saved work and team workflows.

Open Harpoon