Why Did You Render by welldone-software
why-did-you-render by Welldone Software monkey patches React to notify you about potentially avoidable re-renders. (Works with React Native as well.)
About Why Did You Render
From the project's README at github.com/welldone-software/why-did-you-render. Lightly cleaned for readability; for the full source see the upstream repo.
[](https://badge.fury.io/js/%40welldone-software%2Fwhy-did-you-render) [](https://github.com/welldone-software/why-did-you-render/actions/workflows/main.yml) [](https://github.com/welldone-software/why-did-you-render/blob/master/LICENSE) [](https://snyk.io/advisor/npm-package/@welldone-software/why-did-you-render) [](https://coveralls.io/github/welldone-software/why-did-you-render?branch=add-e2e-tests-using-cypress)
by Welldone Software monkey patches * to notify you about potentially avoidable re-renders. (Works with * as well.)
For example, if you pass to a big memo component it would always re-render on every element creation:
It can also help you to simply track when and why a certain comp
Health score breakdown
6-dimension composite. See methodology for formula and weights.
Adoption signals
Real-world usage data, pulled from each registry. The bigger the numbers, the more battle-tested the project.
| Signal | Value | Source |
|---|---|---|
| GitHub stars | 12k | github.com/welldone-software/why-did-you-render |
| GitHub forks | 226 | github.com/welldone-software/why-did-you-render |
| NPM downloads (last month) | 2.0k | why-did-you-render |
Release & maintenance
Is this project actively maintained, or about to die? Check the recency of last commit and last release.
| Project age | 7.5 years | since Nov 2018 |
| Last commit | 22 days ago | Apr 15, 2026 |
| Releases shipped | 88 | last: 1.3 years ago |
Self-hosting cost across providers
Detected requirements: 4GB RAM, 40GB disk minimum. Cheapest plan per provider that meets the requirement.
| Provider | Plan | Specs | Monthly | |
|---|---|---|---|---|
| hetzner | CAX11 | 2c · 4GB · 40GB | $4.13 USD | Deploy → |
| vultr | VC2 | 1c · 1GB · 25GB | $5 USD | Deploy → |
| linode | Nanode 1GB | 1c · 1GB · 25GB | $5.12 USD | Deploy → |
| digitalocean | Basic Regular 1GB | 1c · 1GB · 25GB | $6 USD | Deploy → |
Replaces these paid SaaS
Why Did You Render is one of the open-source alternatives to:
Ready to self-host Why Did You Render?
Spin up a hetzner CAX11 (4GB RAM, 40GB disk) for $4.13/mo and follow the project's official install docs.
Data last refreshed May 7, 2026.
Similar open-source projects
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