Hi, I found that using the /content endpoint we can not set the returned HTML type. Others like Craw

Hi, I found that using the /content endpoint we can not set the returned HTML type. Others like Crawl4ai allow us to set raw, cleaned HTML and markdown. I think CF should implement it.

hype•8/4/25, 8:11 PM

Is browser rendering extremely slow for anyone else to bootup/work?

hype•8/4/25, 8:11 PM

seeing extremely slow times.

AAttila-IBS Hi, I found that using the /content endpoint we can not set the returned HTML ty...

Kathy•8/6/25, 2:51 PM

you're looking for info to be returned in markdown? we have https://developers.cloudflare.com/browser-rendering/rest-api/markdown-endpoint/

Cloudflare Docs

/markdown - Extract Markdown from a webpage

The /markdown endpoint retrieves a webpage's content and converts it into Markdown format. You can specify a URL and optional parameters to refine the extraction process.

KKathy you're looking for info to be returned in markdown? we have https://developers.c...

Attila-IBSOP•8/7/25, 8:17 AM

Thank you, but I need the other 2 ones: raw HTML for getting invisible metadata and cleaned HTML for visible content. i think both Firecrawl and Crawl4ai features would inspire Browser Rendering PMs and devs a lot.

proxy•8/9/25, 1:58 AM

is Browser Rendering down? Been getting 503 error for the last 10 minutes

AAttila-IBS Thank you, but I need the other 2 ones: raw HTML for getting invisible metadata ...

Kathy•8/11/25, 6:37 PM

so our /html endpoint returns raw already today. So what we don't yet have for you is

cleaned

cleaned

html then.

can you explain what you'd like to do with

cleaned

cleaned

that

raw

raw

doesn't do for you?

Tttraenkler For me it is also quite slow. Is this to be expected @Kathy | Browser Rendering ...

hype•8/20/25, 8:54 AM

we ended up moving away

hype•8/20/25, 8:54 AM

used both playwright/puppeeter, don't think it makes any difference.

SmallShen•8/22/25, 11:18 AM

Can we have wrapped functions for rest api in worker bindings?

SSmallShen Can we have wrapped functions for rest api in worker bindings?

Kathy•8/25/25, 6:41 PM

is on the list

SmallShen•8/26/25, 12:45 AM

Does failed rest api calls (waitForTimeout exceeds) adds to billable browser hours?

SmallShen•8/26/25, 12:47 AM

Can we have browser hours used in the response of rest api?

SSmallShen Can we have browser hours used in the response of rest api?

Kathy•8/26/25, 3:37 PM

great idea. adding to the list

SSmallShen Does failed rest api calls (waitForTimeout exceeds) adds to billable browser ho...

Kathy•8/26/25, 3:37 PM

it does not

SmallShen•8/26/25, 6:13 PM

Is the rest api rate limit sliding window or fixed time period? I’m trying to adjust my backend concurrency settings.

SmallShen•8/26/25, 11:10 PM

Is it possible to make the /markdown api return both the original html and the extracted markdown? I'm building something that requires verifying results afterwards, which need a "snapshot" of original html dom (like wayback machine).

SSmallShen Is the rest api rate limit sliding window or fixed time period? I’m trying to ad...

Kathy•8/27/25, 5:21 PM

great q - will add to docs too

Rate limits are enforced with a fixed per second fill rate. For example, the workers paid limit of 60 requests per minute translates to 1 request per second. This means you cannot send all 60 requests at once; the API expects them to be spread evenly over the minute.

SSmallShen Is it possible to make the /markdown api return both the original html and the e...

Kathy•8/27/25, 5:22 PM

we have a separate /content endpoint for html https://developers.cloudflare.com/browser-rendering/rest-api/content-endpoint/. any reason that doesn't work for you?

Cloudflare Docs

/content - Fetch HTML

The /content endpoint instructs the browser to navigate to a website and capture the fully rendered HTML of a page, including the head section, after JavaScript execution. This is ideal for capturing content from JavaScript-heavy or interactive websites.

KKathy we have a separate /content endpoint for html https://developers.cloudflare.com/...

SmallShen•8/27/25, 5:34 PM

I don’t want to make 2 request for a single scrape. I’m thinking that for /json or /markdown endpoint, the original content is already available, could have an option to just return both json/markdown and original content.

gegi•8/29/25, 12:04 PM

Hello, is it allowed to scrap for example Instagram for their OG meta properties or does it break the Cloudflare rules?

KKathy we have a separate /content endpoint for html https://developers.cloudflare.com/...

Advany•9/1/25, 9:52 AM

how does one monitor the usage of the api? I only see how many requests its making to the api but not how much browser hours that consumed?

Advany•9/1/25, 9:56 AM

I just saw "Currently, the Cloudflare dashboard displays usage metrics exclusively for the Workers Bindings method. Usage data for the REST API is not yet available in the dashboard. We are actively working on adding REST API usage metrics to the dashboard.". How do I monitor my usage somewhere else?

Ggegi Hello, is it allowed to scrap for example Instagram for their OG meta properties...

gegi•9/1/25, 3:12 PM

Can anyone give me an answer to this question please :/

Martijn•9/1/25, 6:49 PM

Hi there! Since I'm not getting an answer in the #workers-help thingy, am I in the right place here to report this bug? Or am I doing something wrong?
workers-and-pages-helpFonts look bad in Browser Rendering screenshots

gegi•9/2/25, 1:15 PM

Does anyone use this api for retrieving the opengraph meta data of a website? Are there any configurations which I have to consider for best practice? Appreciate any help

Ggegi Does anyone use this api for retrieving the opengraph meta data of a website? Ar...

Kevin•9/2/25, 2:32 PM

Depends on a site but usually you don't need browser rendering to fetch opengraph. Just do simple http call to fetch html.

KKevin Depends on a site but usually you don't need browser rendering to fetch opengrap...

gegi•9/2/25, 3:18 PM

Instagram and Tiktok loads the opengraph dynamically

MMartijn Hi there! Since I'm not getting an answer in the #workers-help thingy, am I in t...

Kathy•9/3/25, 12:13 AM

hmm might be an unsupported font. let me get a list of fonts we currently support. do you know what font it is?

AAdvany how does one monitor the usage of the api? I only see how many requests its maki...

Kathy•9/3/25, 12:42 AM

when using the rest api you can see the browser time used for every request in the

X-Browser-Ms-Used

X-Browser-Ms-Used

header

ah i need to update that in the docs. thanks for reminding

KKathy hmm might be an unsupported font. let me get a list of fonts we currently suppor...

Martijn•9/3/25, 8:25 AM

One example is the google font Poppins

Kathy•9/4/25, 7:01 PM

got it, yea looks like it's not a supported font right now. would you be able to use one of the ones here instead? https://kathayl-patch-9.preview.developers.cloudflare.com/browser-rendering/reference/supported-fonts/

Cloudflare Docs

Supported fonts

Browser Rendering uses a managed Chromium environment that includes a standard set of fonts. When you generate a screenshot or PDF, text is rendered using the fonts available in this environment.

Johndoer•9/11/25, 2:29 PM

Hey i was trying to use the Rest API enpoint /content to get client side rendered content from Algolias instantsearch. I tried everything but i didn't get any items.

JJohndoer Hey i was trying to use the Rest API enpoint /content to get client side rendere...

Kathy•9/11/25, 5:32 PM

what url/what was the request? what response did you get?

gegi•9/12/25, 2:38 PM

Hello, I want to generate url previews with opengraph meta tags but is using the browser rendering api the right approach for dynamic websites?

Diaz•Olvera•Co•9/15/25, 8:28 PM

so can I say automate some clicks for online courses

Diaz•Olvera•Co•9/15/25, 8:29 PM

something simple like everytime it autoplays to the next video I need to manually hit fullscreen

Diaz•Olvera•Co•9/15/25, 8:30 PM

or is this more a case for workers?

zegevlier•9/15/25, 8:33 PM

Browser rendering is for running a browser on the server, and from your question it looks like you more want to control a browser running on your own computer? If so, I'd recommend either looking into making a browser extension, or using selenium or puppeteer

Isaac McFadyen•9/15/25, 8:35 PM

I would recommend Selenium or Puppeteer if you're just getting started. They're easier to use.

Mmarek Hey, any WebGL updates after two months, Kathy? 🙂

Kathy•9/16/25, 5:10 PM

we've worked on it a bit for REST API! but not working 100% of time yet (still fixing bugs). are you needing it for REST API or workers bindings?
bc if REST API, it might work for you now

Dan (Openside)•9/16/25, 8:11 PM

Any insights into time out issue: Page.printToPDF timed out. Increase the 'protocolTimeout' setting in launch/connect calls for a higher timeout if needed.

I've set the protocolTimeout to 0 in my config:
const browser = await puppeteer.launch(env.BROWSER,{
headless: 'new',
keep_alive: 600000,
args: [
"--disable-setuid-sandbox",
"--no-sandbox",
"--single-process",
"--no-zygote",
],
protocolTimeout: 0,
});

Any other suggestions for avoiding timeout.

What my app does - I pass it an HTML string, which it renders via page.setContent(html...) then it converts to PDF using page.pdf({...,timeout: 0})

DDan (Openside)Any insights into time out issue: Page.printToPDF timed out. Increase the 'proto...

Dan (Openside)•9/16/25, 9:07 PM

I switched to use the playwright provider instead of puppeteer and it loaded significantly faster with no time out, so will stick with that and likely not turn back to puppeteer

KKathy got it, yea looks like it's not a supported font right now. would you be able to...

false•9/16/25, 10:42 PM

Hi, I'm curious why custom fonts are not supported? Is there a timeline for this? This is a big blocker for me unfortunately

Kenton•9/22/25, 3:08 PM

As far as using those default supported fonts... i'm having trouble even rendering those..? Setting font-family to any of those isn't working?

gegi•9/23/25, 8:11 AM

Hello, is it possible to waitUntil "networkidle2" in the rest api?

Ggegi Hello, is it possible to waitUntil "networkidle2" in the rest api?

Kathy•9/24/25, 10:02 AM

yep, add it like so:
{
"url": "https://open.spotify.com/artist/3c0gDdb9lhnHGFtP4prQpn",
"gotoOptions": {
"waitUntil": "networkidle2"
}
}

Hi, I found that using the /content endpoint we can not set the returned HTML type. Others like Craw

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