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Website health

JavaScript rendering Beta

JavaScript SEO: scan sites built with React, Vue and similar as visitors see them

Some sites send an almost empty page and build the text with JavaScript. SEOmise opens their pages in a real browser, so titles, text and links that only appear after the scripts ran are checked too.

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Illustration of the screen, without data.

Why it matters

From the problem to what SEOmise does

The problem

An empty page to a crawler

Sites built with React, Vue or Angular, and some shop and site-builder themes, send a page whose text is added by scripts. A plain scan sees little text and few links, so the report misses most of the site.

What JavaScript rendering does

JavaScript SEO: scan sites built with React, Vue and similar as visitors see them

  • A real browser. Headless Chromium runs the page's scripts, then SEOmise reads the page.
  • Links found by scripts. Links that only appear after the scripts ran are followed like any other link.
  • Capped and queued. A set number of pages per scan, a time and memory limit per page, on the queue so the scan is never held up for long.

How it works

Three steps, start to finish

  1. Switch it on for the projectWebsite health: tick "Render JavaScript" next to the scan button.
  2. Scan as usualThe scan reads every page as before; its first pages are then opened in a browser on the queue.
  3. See the full pictureTitles, text, headings and links come from the rendered page, and the scan says how many pages get most of their text from JavaScript.

Features

What you get with JavaScript rendering

A real browser

Headless Chromium runs the page's scripts, then SEOmise reads the page.

Links found by scripts

Links that only appear after the scripts ran are followed like any other link.

Capped and queued

A set number of pages per scan, a time and memory limit per page, on the queue so the scan is never held up for long.

A fallback when the browser cannot run here Beta

Pages that arrive almost empty can be read again through the Zyte API, a rendering service, when SEOmise's own browser is not used for the scan: only after your robots.txt allows it, within a monthly number of pages per workspace, and through a bot wall only on a site you have verified. The Zyte API fallback is in early access: ask for it and our team switches it on once its key and check are in place.

Every request checked

Each request a page makes is checked before it is made: only public addresses, never your server's own network.

Before and after

What changes with JavaScript rendering

Before: a plain scan of a JavaScript site. After: with JavaScript rendering. Drag the handle, or use the arrow keys, to compare.

A plain scan of a JavaScript site

  • Pages that look empty
  • Links the scripts add never found
  • Reports that miss most of the site

With JavaScript rendering

  • Text and headings as visitors see them
  • Links added by scripts followed
  • Pages that rely on JavaScript counted
BeforeAfter

Illustration of the difference, not a measured result.

What it needs

No surprises after you sign up

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Website health

Website health

JavaScript rendering is part of the site scan.

Every platform

Whatever your site runs on

What JavaScript rendering does on each kind of website, from SEOmise's site connectors to step-by-step guidance.

WordPress

WordPress and WooCommerce
Fully supported

Works on any public website, whatever it is built on.

Laravel

Sites built on Laravel
Fully supported

Works on any public website, whatever it is built on.

Any PHP site

Custom PHP, CodeIgniter, Symfony, Drupal, Joomla
Fully supported

Works on any public website, whatever it is built on.

Every other platform

Shopify, Wix, Squarespace, Webflow, static sites and the rest
Fully supported

React, Vue, Angular, Next.js and Nuxt sites, Shopify, Wix, Webflow and every other platform: nothing to install.

About the site connectors

JavaScript rendering is in beta

It is not on sale yet, so there are no prices for it. Leave your name and e-mail address and we will tell you as soon as you can use it.

Questions about it?

Ask Mise, our assistant, in the help centre, or book a call and we will tell you where JavaScript rendering stands and what you can use today.

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Questions

JavaScript rendering: common questions

Do I need it?

Only if your site builds its text with JavaScript. If a scan of your site shows pages with very little text that look full in a browser, switch it on.

Is every page rendered?

The first pages of each scan, closest to the home page first (50 unless SEOmise changes it). The rest are read as the server sends them.

Is it safe for my site?

It opens your pages like a visitor's browser, a few at a time, and follows your robots.txt like every scan.

Can I use JavaScript rendering now?

JavaScript rendering is in beta: it is not on sale yet. Use Ask for early access and we will e-mail you as soon as it is ready for you. Other modules and the plans are on the pricing page.

Guides

JavaScript rendering: how-to guides

Every guide in the help centre

Works well with

Related modules

Be among the first to try JavaScript rendering

JavaScript rendering is in beta. Ask for early access and we will e-mail you when it is ready for you; nothing is bought.

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No ranking guarantees: just clear work, with the evidence.