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In Puppeteer, priority is an optional cookie field that Chrome documents as a cookie-priority attribute. Its documented values are Low, Medium (the default), and High. It is not a rule for choosing which matching cookie is sent, and it does not replace cookie scope or sending conditions. Puppeteer’s API reference says the field is supported only in Chrome; Chrome DevTools marks the Priority attribute deprecated. Puppeteer’s CookieParam reference and Chrome DevTools documentation describe the relevant behavior.
What does Puppeteer cookie priority do?
priority is optional cookie metadata exposed by Puppeteer. The API documentation describes it as “Cookie Priority” and says it is supported only in Chrome. Chrome DevTools lists three values: Low, Medium, and High, with Medium as the default. DevTools also labels the Priority attribute deprecated.
The name can sound like a promise about which cookie takes precedence in a request. The documented field does not establish that. It does not override a cookie’s domain or path scope, security requirements, or other rules that determine whether a cookie is eligible to be sent. The official materials cited here also do not establish a complete current eviction algorithm or guarantee that a High-priority cookie will be retained.
How to set priority with Puppeteer
Use Browser.setCookie() or BrowserContext.setCookie() in current code. Choose the context whose cookie store will be used for the navigation or request. Browser contexts have isolated storage, so setting a cookie in one context does not make it available in another.
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- Read Before You Buy — No Video Output: These adapters support charging and USB 2.0 data transfer, but cannot transmit video signals. Except for standard USB webcams (which use USB data only), they are not compatible with HDMI/DisplayPort cables, video-capable USB-C hubs, or docking stations with video output.
- Convert USB-A Ports to USB-C: Designed to connect USB-C earphones, cables, flash drives, card readers, and other USB-C accessories to standard USB-A ports. Plug-and-play with no drivers or software required.
- Aluminum Alloy Housing: Built with a sturdy aluminum alloy shell that aids in heat dissipation and protects against daily wear and scratches. Designed to maintain a stable and secure connection.
- Compact & Travel-Friendly: The ultra-compact design allows the adapter to stay plugged into your device without blocking adjacent ports or adding bulk, reducing wear and tear on your original USB ports.
- 12-Month Warranty: Backed by a 12-month manufacturer warranty for peace of mind. Designed to meet strict quality control standards for reliable everyday performance.
Set and read a cookie in a browser context
This example sets a cookie for a local test page, reads it back, and closes the browser. Run it in a project with Puppeteer installed:
const puppeteer = require('puppeteer');
(async () => {
const browser = await puppeteer.launch();
try {
const context = await browser.createBrowserContext();
await context.setCookie({
name: 'session_hint',
value: 'example',
url: 'https://example.com/',
priority: 'High',
});
const cookies = await context.cookies('https://example.com/');
console.log(cookies);
} finally {
await browser.close();
}
})();Use a URL or the appropriate domain and path fields to define where the cookie applies. The cookie guide documents setting, reading, and deleting cookies, and notes the analogous browser-level methods: Puppeteer cookie guide.
Rank #2
- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
- Quick Data Transfers: Accelerate your productivity with rapid data transfers using a high-speed 5Gbps USB 3.0 port and two 480Mbps USB 2.0 ports.
- 4K HDMI Display: Enhance your visual experience with a hub capable of delivering 4K resolution at 30Hz in both mirror and extend modes. Please note that this hub is compatible with MacBook (macOS 12 and newer), Windows 10 and 11, ChromeOS, and laptops equipped with DP Alt Mode and Power Delivery. Note: This device is not compatible with Linux.
- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
Browser-level alternative
If the cookie belongs in the browser’s default context, use the browser API instead:
await browser.setCookie({
name: 'session_hint',
value: 'example',
url: 'https://example.com/',
priority: 'Medium',
});For API details, see Puppeteer’s CookieData reference. Avoid building new examples around page.setCookie(): Puppeteer marks that page-level method obsolete and points users to browser- or context-level cookie methods. See Page.setCookie API reference.
Rank #3
- Sleek 7-in-1 USB-C Hub: Features an HDMI port, two USB-A 3.0 ports, and a USB-C data port, each providing 5Gbps transfer speeds. It also includes a USB-C PD input port for charging up to 100W and dual SD and TF card slots, all in a compact design.
- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
What do Low, Medium, and High mean?
| Value | Documented meaning | What not to infer |
|---|---|---|
Low |
A documented cookie-priority value in Chrome. | It does not mean the cookie is ineligible for a request or necessarily discarded first. |
Medium |
The documented default when no priority is specified. | It does not make the cookie match more URLs or bypass other cookie rules. |
High |
A documented cookie-priority value in Chrome. | It does not guarantee retention or make a cookie win over another cookie for a request. |
The official references establish the labels and default, but not a complete, version-specific explanation of how Chrome uses the attribute under every storage or eviction condition. Chrome DevTools calls the attribute deprecated, so avoid depending on it for essential application behavior.
Priority is not cookie scope or eligibility
Cookie fields describe different things. Set the attributes required for the cookie’s actual purpose rather than treating priority as a substitute for them.
Rank #4
- Dual Converters, Infinite Potential：Includes 2× USB C male to USB A female adapters and 2× USB A male to USB C female adapters. Perfect for a wide range of uses—tablets with Bluetooth keyboards, expand USB ports on macbook, and more. Two different converters for all your daily needs
- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
- Upgraded Exquisite Craftsmanship: With an aluminum alloy housing and metal connector, the usbc to usb adapter is extremely durable and sturdy. Rigorously tested to withstand more than 10,000 times of plugging and unplugging, ensuring long-lasting performance
- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
- Please Note: To reach 10Gbps speed, keep the cable under 3.3 ft. For USB A Male to USB C adapters, try flipping the USB C connector. USB C Male to USB A adapters support bidirectional 10Gbps transfer within 3.3 ft
| Field | What it controls |
|---|---|
domain and path |
The hosts and URL paths within the cookie’s scope. |
secure |
Whether the cookie is limited to secure connections. |
sameSite |
Conditions for sending in same-site and cross-site contexts. |
expires |
Persistent expiration; without it, the cookie is a session cookie. |
httpOnly |
Whether page JavaScript can access the cookie. |
partitionKey |
Partition context for a partitioned cookie; Puppeteer documents browser-specific semantics. |
priority |
Cookie-priority metadata, documented as Chrome-only by Puppeteer. |
These are distinct fields in Puppeteer’s cookie parameter types. See CookieParam, CookieData, and Chromium’s SameSite cookie FAQ.
SameSite still controls cross-site conditions
Priority does not change SameSite eligibility. Chromium’s FAQ says that, in the documented Chrome behavior, an unspecified SameSite value is treated as Lax; cross-site cookies must specify SameSite=None and Secure. If a cookie is missing from a cross-site request, check those attributes and the request context rather than raising its priority.
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Common problems and fixes
- The cookie is not available after setting it. Check that you set and read it in the same
BrowserContextthat performs the navigation or request. Contexts isolate cookie storage. - The cookie is present but absent from a request. Check domain, path, secure transport, and SameSite conditions.
prioritydoes not broaden scope or bypass those rules. - The TypeScript or runtime API rejects the value. Confirm the Puppeteer API type and browser support: its reference describes priority as Chrome-only. If your application does not need the metadata, omit the optional field.
- A tutorial uses
page.setCookie(). That method is marked obsolete. Replace it withcontext.setCookie()orbrowser.setCookie(), choosing the store the target page uses. - You expect
Highto guarantee persistence or request precedence. The cited official documentation does not promise either behavior. Use expiry and scope fields for their documented purposes, and do not rely on priority for correctness.
Or skip the browser setup
If the job is capturing a page rather than testing Puppeteer cookie behavior, ScreenshotNeo is a website screenshot API and MCP server. Its API can return a screenshot in PNG, JPEG, or WebP, or a PDF, from one GET request:
Quick Recap
curl -G "https://api.screenshotneo.com/v1/shot" -d access_key=YOUR_API_KEY --data-urlencode url=https://example.com -o shot.webpSee the ScreenshotNeo API documentation for request options. ScreenshotNeo accepts cookie and consent banners like a visitor and removes more than 60 known consent platforms, newsletter popups, and chat widgets before capture; each cleanup step can be turned off. Bot checks, blank pages, failed loads, timeouts, and cache hits are not billed, and response headers report the page verdict and billing status. Its MCP server provides screenshot and PDF tools for AI agents. The Free plan includes 1,000 shots per month with no card; paid plans start at $5 for 3,000 shots. Sign up for free.
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