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dalibo/pev2(opens in a new tab)
Language: TypeScript
Postgres Explain Visualizer 2
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- Last updated
- 10/26/2026
gem-hunterLanguage: TypeScript
Postgres Explain Visualizer 2
PEV2: A VueJS component to show a graphical vizualization of a PostgreSQL execution plan.
To use the explain vizualizer you can choose one of the following options:
This service is provided by Dalibo and can help you to share your plans with
colleagues or customers.
PEV2 can be run locally without any external internet resource.
Simply download pev2.html, open it in your favorite internet browser.
<script src="https://unpkg.com/vue@3/dist/vue.global.prod.js"></script> <script src="https://unpkg.com/pev2/dist/pev2.umd.js"></script> <link href="https://unpkg.com/bootstrap@5/dist/css/bootstrap.min.css" rel="stylesheet" /> <link rel="stylesheet" href="https://unpkg.com/pev2/dist/pev2.css" /> <div id="app" class="d-flex flex-column vh-100"> <pev2 :plan-source="plan" plan-query="" :plan-comment="comment" /> </div> <script> const { createApp } = Vue const plan = ` Aggregate (cost=12.50..12.51 rows=1 width=8) -> Seq Scan on employees (cost=0.00..10.00 rows=1000 width=0) ` const app = createApp({ data() { return { plan: plan, comment: "Uses the production work_mem setting", } }, }) app.component("pev2", pev2.Plan) app.mount("#app") </script>
PEV2 can be integrated as a component in a web application.
Install it:
npm install pev2
Declare the PEV2 component and use it:
import { Plan } from "pev2" import "pev2/dist/pev2.css" export default { name: "PEV2 example", components: { pev2: Plan, }, data() { return { plan: plan, comment: "Uses the production work_mem setting", query: query, } }, }
Then add the PEV2 component to your template:
<div id="app"> <pev2 :plan-source="plan" :plan-query="query" :plan-comment="comment"></pev2> </div>
PEV2 requires Bootstrap (CSS) to work so don't forget to
add the following in you header (or load them with your favorite bundler).
<link href="https://unpkg.com/bootstrap@5/dist/css/bootstrap.min.css" rel="stylesheet" />
This project is a rewrite of the excellent Postgres Explain Visualizer (pev). Kudos go to Alex Tatiyants.
The pev project was initialy written in early 2016 but seems to be abandoned since then. There was no activity at all for more than 3 years and counting though there are several issues open and relevant pull requests pending.