Swap live components without cutting the power.
WebWarp mounts local files straight into a running web app — no rebuild, no restart, no lost session. Frontend devs iterate in place; pentesters probe the live surface.
GET /api/cart HTTP/1.1
Host: checkout.prod.app
← local: mock/cart.json [200 · 0.09s]Ship the fix before the page reloads.
Mount a local bundle.js into the running app and see the change land in under a hundred milliseconds — your dev server stays the only source of truth.
Probe the live surface, not a snapshot.
Inject crafted payloads and swapped components into the authenticated flow, capture the response, and keep the session warm the whole time.
Drop a file and it's live. The machine never powers down.
Intercept and rewrite in place while cookies and auth stay intact.
Every injected call is logged, diffed, and ready to replay.
I swapped in a broken checkout component and watched the live flow break in front of the customer — same session, same cart. That's the whole point.
Cut my component QA loop from a full redeploy to a single file drop. I stopped waiting on CI to test one CSS class.
The replay log paid for itself in the first audit. We reproduced a race condition three times in a row without re-arming.
- ▸ Inject local JavaScript into URL patterns
- ▸ Inject local CSS into URL patterns
- ▸ Dashboard to manage files and targets
- ▸ Chrome, Edge, Brave, Arc and Opera support
- ▸ Everything in Starter
- ▸ Live reload / HMR
- ▸ Injection profiles
- ▸ HTML snippets, image and font overrides
- ▸ DevTools panel
- ▸ Shareable team profiles
- ▸ Conditional injection (query, cookie, header)
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Do free browser devtools already do this?+
Local overrides stop at single files in one browser. WebWarp mounts whole directories across Chrome, Edge, Brave, Arc and Opera, keeps the mapping between sessions, and survives a hard reload.
What happens when a browser changes its APIs?+
We ship against multiple injection paths — extension APIs, a local proxy mode, and CDP. When one moves, the others carry the load, and the mapping you wrote stays the same.
Why not run a full proxy like Burp or mitmproxy?+
Run both. WebWarp is the fast lane for client-side asset manipulation: no CA install, no scope config, no traffic wall to wade through. Keep the heavy proxy for the deep server-side work.
Is this built for developers or for pentesters?+
One engine, two presets. Dev mode watches your build output and hot-mounts it; test mode arms payloads, keeps the authenticated session warm, and records every response for the report.
Does WebWarp touch production?+
No. Local files mount into your browser session only, and nothing is written back to the origin. Scope and authorization stay your call.