A VueJS component to show a graphical vizualization of a PostgreSQL execution plan.

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See Demo.


This project is a rewrite of the excellent Postgres Explain Visualizer
. Kudos go to Alex Tatiyants.

The pev project was initialy written in early 2016 but seems to be
abandonned 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

The current project has several goals:

  • isolate the plan view component and its dependencies in order to use it in
    any web app with for example the ability to load a plan without requiring
    any copy-paste from the user,
  • make it work with recent version of JS frameworks,
  • upgrade Bootstrap to a more recent version,
  • use VueJS just for a matter of taste,
  • maintain the project to match upgrades in PostgreSQL.


PEV2 is intended to be used as VueJS component.

Install it:

npm install pev2

Declare the PEV2 component and use it:

import pev2 from "pev2";

new Vue({
  el: "#app",
  data: function() {
    return {
      plan: plan,
      query: query
  components: {
    pev2: pev2

Then add the PEV2 component to your template:

<div id="app">
  <pev2 :plan-source="plan" :plan-query="query">pev2>

PEV2 requires Bootstrap (CSS) and FontAwesome to work so don’t forget to
add the following in you header (or load them with your favorite bundler).

  href="https://unpkg.com/[email protected]/dist/css/bootstrap.min.css"
  href="https://unpkg.com/[email protected]/css/font-awesome.css"

For a complete example, see this codesandbox.

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