Replay QA
Test a URL
Run a one-time QA check on any web app URL. Paste a link and get a bug report in minutes. Nothing to install, no test knowledge required.
Setup
Enter your URL
Paste the URL of a running web application. Supported URL types include:
- A production URL (
https://your-app.com) - A staging or preview deployment (
https://pr-123.preview.vercel.app) - A localhost URL via the reverse proxy (
http://localhost:3000, see the setup guide on qa.replay.io) - Any publicly accessible web app
If a GitHub repository URL is provided, you will be prompted to connect a repo instead. See Connect a Repo.
Add instructions
You can provide additional context through the "Need to tell me something else?" button. This can include:
- What to test: specific flows, pages, or features
- Login credentials: authentication details for the application
- Maximum budget: how much the run should spend
Wait for results
Replay QA explores the application, writes tests, runs them, and compiles a bug report. A first run takes a few minutes and runs in the background.
Report
Every bug report includes:
| Field | Description |
|---|---|
| Root cause | Why the bug happened, grounded in recorded execution data |
| Suggested fix | Code-level recommendation for fixing the bug |
| Full recording | Link to Replay DevTools session with network, console, and DOM state |
| Confidence score | How reliably the bug was reproduced (high / medium / low) |
Each bug report also includes an agent-ready description of the problem and fix: a structured report with title, description, steps to reproduce, expected behavior, root cause, causal chain, and recording links that can be fed directly into an AI coding agent.
Public apps
If an application is posted to a public link (Show HN, Reddit, X), it can be tested for free. Create a project with the URL and any required logins, open the project settings, and set the public share link to the post. The project becomes free immediately and any existing credits are refunded.
Shared projects are public and searchable, allowing others to run QA passes on them as well.
Mode comparison
| URL drop mode | Connect a repo mode |
|---|---|
| One-time check | Continuous |
| Results in dashboard | Results on PRs + dashboard |
| No authentication | GitHub authentication required |
Connect a GitHub Repo
Convert a one-time check into continuous QA.
Replay QA Overview
Overview of Replay QA features and workflow.