§ Puppeteer alternative

Puppeteer Alternative: Managed Headless Chrome PDF Rendering, No Fleet

Puppeteer is an excellent library and a miserable service to operate. If you are here because the browser fleet keeps waking someone up, this page is the honest version of the trade off, including when you should just keep Puppeteer.

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§ Short answer

The best Puppeteer alternative for PDF generation is a managed rendering API: you keep the same Chromium output quality, but the vendor runs the browser pool, patches it, and absorbs the memory leaks. Puppeteer itself is free; what costs money is the engineer who owns the fleet. Swap the library for one HTTP call when render reliability starts consuming on call time, or when you need a dated record of what you rendered, which no headless browser gives you.

Last updated July 2026. Written and fact checked by the Sitepdf team.

§ 00

Puppeteer, wkhtmltopdf and a managed API, side by side

This is a comparison of operating models, not a benchmark. All three produce good PDFs on a good day. They diverge on who fixes it at 3am.

	Puppeteer (self-hosted)	wkhtmltopdf	Sitepdf API
Licence cost	Free (Apache 2.0)	Free (LGPL)	Paid, from $29/mo planned
Rendering engine	Current Chromium	Old WebKit fork, archived upstream	Managed current Chromium
Modern CSS and JS	Full support	Partial: flexbox and grid are unreliable	Full support
Who runs the browser	You do	You do	We do
Typical failure mode	Memory leak, zombie processes, pool wedges	Silently renders the page wrong	Explicit error, no quota charged
Wait for late content	You write it yourself	Not really	wait_for selector, built in
Timestamped archive of the render	No	No	Yes, archive=true
Scales by	Adding servers you manage	Adding servers you manage	Your plan's concurrency

Licence and engine facts are from each project's own documentation. wkhtmltopdf's upstream repository has been archived and its maintainers recommend moving to a Chromium based renderer, which is the honest reason it sits third here.

§ 01

The bill for "free" is not zero, it is just not on the invoice

Puppeteer costs nothing to install. It costs a great deal to run. The pattern is so consistent it is almost a rite of passage: a single puppeteer.launch() in a request handler works beautifully in staging, then production traffic arrives and the box runs out of memory because browsers were never closed on the error path. So you build a pool. The pool wedges. So you add a health check and a reaper. Chrome ships a new major version and your page breaks in a way that reproduces on nobody's laptop. Someone patches a font package at 11pm because Arabic invoices are rendering as boxes.

None of that appears on a budget line. It appears as an engineer's week, repeatedly, and as the on call rotation nobody volunteers for. The library is free; the fleet is a product you did not mean to build and do not get paid for.

We wrote the full arithmetic in HTML to PDF library vs API, including the volumes at which self-hosting genuinely does win.

§ 02

When you should keep Puppeteer, honestly

We are not going to pretend the API is always right. Keep the library when any of these are true. Your rendering needs are trivial and stable, a handful of simple templates that have not changed in a year. You already operate browser automation for other reasons, scraping or end to end tests, so the fleet exists whether or not you make PDFs with it. Your data cannot leave your network for regulatory reasons, and no vendor contract fixes that. Or your volume is so high that per render pricing genuinely exceeds the cost of servers plus the fraction of an engineer who tends them.

That last one is a real number, not a rhetorical one. Work it out before you buy anything. If self-hosting wins on your numbers, self-host.

§ 03

What you get by switching that Puppeteer cannot give you at all

Output quality is a wash. It is the same engine, so the PDF looks the same. What changes is everything around the render.

The pool, the patching and the page at 3am become someone else's job. Failed renders return an explicit error with the HTTP status the page returned, instead of a blank PDF you discover three weeks later in a customer complaint. And the render can carry a record: archive=true stores a timestamped, immutable snapshot of the page under your account, retrievable by id for the life of your retention window. Headless Chrome has no concept of this, and bolting it on means building a second pipeline, a storage layer and a retention policy. Archiving is the half of the job Puppeteer was never going to do for you.

If a record is the reason you are reading this, the save webpage as PDF and screenshot API pages cover the capture side, and the PDF generator API covers document generation from your own templates.

§ 04

Migrating off the fleet is a one function change

Almost every Puppeteer PDF integration reduces to one internal function: give it HTML or a URL, get back a buffer. Replacing the body of that function with an HTTP call is usually an afternoon, and you can run both paths side by side behind a flag while you compare output on real documents. Nothing about your templates changes, because the engine did not change.

Planned tiers are on the pricing page, and the seven tool comparison lists the other vendors worth pricing against us, because you should check.

The migration: the Puppeteer block on the left becomes one call. Same Chromium, none of the fleet.

// before: you own the browser, the pool and the leak
const browser = await puppeteer.launch({ args: ['--no-sandbox'] })
const page = await browser.newPage()
await page.goto(url, { waitUntil: 'networkidle0' })
await page.waitForSelector('.order-summary')
const pdf = await page.pdf({ format: 'A4' })
await browser.close()   // the line everyone forgets on the error path

// after: one call, plus a dated record you never had before
const res = await fetch('https://api.sitepdf.com/v1/render', {
  method: 'POST',
  headers: { Authorization: `Bearer ${process.env.SITEPDF_KEY}` },
  body: new URLSearchParams({
    url,
    wait_for: '.order-summary',
    format: 'A4',
    archive: 'true',
  }),
})
const { pdf_url, archive } = await res.json()

The API is in early access; this is the documented call shape it opens with. Full request and response walkthrough.

§ 05

Questions about this job

What is the best alternative to Puppeteer for generating PDFs?

For most teams it is a managed rendering API, because it keeps Chromium output quality while removing the browser fleet you would otherwise operate. Puppeteer remains the right answer when your volume is very high, your rendering is simple and stable, or your data legally cannot leave your network.

Why does Puppeteer leak memory in production?

Almost always because browser or page instances are not closed on every code path, especially when a render throws. Each orphaned Chromium process holds its memory until the box runs out. The standard fixes, a pool with health checks and a reaper process, work, but they are infrastructure you now own and maintain.

Is wkhtmltopdf still a good option in 2026?

For simple, static, print oriented documents it still works and costs nothing. But it renders with an old WebKit fork, its upstream repository is archived, and modern CSS such as flexbox and grid is unreliable. If your templates use current CSS or any JavaScript, choose a Chromium based renderer instead.

Will my PDFs look different if I switch from Puppeteer to an API?

Not materially, because the rendering engine is the same Chromium. The practical differences are operational: renders run on a warmed managed pool, failures come back as explicit errors rather than blank files, and each render can be archived as a timestamped snapshot.

How hard is it to migrate off Puppeteer?

Usually an afternoon. Most integrations funnel through one function that takes HTML or a URL and returns a PDF buffer; you replace its body with an HTTP request. Run it behind a feature flag alongside the old path and diff the output on real documents before you cut over.

§ Index

More PDF and archiving tools

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