Use Puppeteer’s cookies() to inspect cookies, setCookie() to seed them, and deleteCookie() or a context’s deleteMatchingCookies() to clean them up. The browser-level methods operate on the default BrowserContext; use a specific BrowserContext when your work needs its own isolated cookie jar. The examples below use the current Puppeteer API shape; confirm supported fields against the version you have installed.
Read cookies from a page or context
Launch a browser, navigate to the target site if needed, then read the cookies available in the default context:
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import puppeteer from 'puppeteer';
const browser = await puppeteer.launch();
try {
const page = await browser.newPage();
await page.goto('https://example.com');
const cookies = await browser.cookies();
console.log(cookies);
} finally {
await browser.close();
}browser.cookies() returns Promise<Cookie[]>. Its result reflects cookies available in the default BrowserContext, not necessarily every cookie that could be set for every URL. If you have a particular context, call its cookies() method instead. Puppeteer documents browser-level shortcuts as operations on browser.defaultBrowserContext(). Puppeteer cookie guide Browser.cookies() API
The Tool Desk
Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Inspect the returned cookie objects rather than assuming a site uses only a name and value. Attributes such as domain, path, expiration, SameSite, secure, HttpOnly and partition key can affect where a cookie applies and how it behaves.
#1 Best Overall
- Compatible Model(s): Magicmoon brand filter only for 24 inch -diagonally measured - widescreen monitor - aspect ratio 16:9 - filter size: width: 20 15/16", Height: 11 13/16" (531mm x 298mm)
- Superior Privacy: The computer privacy filter makes the screen appear dark when looking at it from an angle (the angle is about 30 to 60 degree), but bright when looking directly at it. To change the privacy level - simply adjust your monitor’s brightness accordingly
- Eye and Screen Protection: Privacy Filter does not only protect your private life but also protects your eyes by blocking 30% of blue light , blocking the harmful blue light between 380 to 495 nm, it filters out the blue light and relieves eye strain
- Perfect For Open Workspaces: Great for maintaining screen privacy in open work spaces
- Includes Two Options: Option 1 uses clear adhesive strips that securely attach to any computer screen. Option 2 (for computer screens with a raised bezel only) uses slide mount tabs that easily stick to the display frame, allowing you to slide the privacy screen filter on and off as needed
Set cookies before or during a test
Use setCookie(...cookies) to seed cookies in the default context. A cookie requires name and value; other attributes are optional and should reflect the target application’s requirements.
import puppeteer from 'puppeteer';
const browser = await puppeteer.launch();
try {
const page = await browser.newPage();
await page.goto('https://example.com');
await browser.setCookie({
name: 'test-session',
value: 'session-value',
domain: 'example.com',
path: '/',
secure: true,
httpOnly: true,
sameSite: 'Lax'
});
console.log(await browser.cookies());
} finally {
await browser.close();
}That domain and those flags are illustrative, not a universal configuration. Match domain and path to the site and use security and SameSite settings appropriate to the test. The guide also shows expires: -1 in an example; do not copy an example expiry blindly when the test depends on persistence or expiration. Puppeteer cookie guide
Rank #2
![[2 Pack] 24 Inch Computer Privacy Screen Filter for 16:9 Widescreen Monitor | Anti Glare, Anti Blue &UV Light, Anti Spy, Eye Protect, Protector, Film, Shield, Fit, Removable, Reusable, 9H, Black, Quality](https://m.media-amazon.com/images/I/41SBKw3J4ML._SL160_.jpg)
- 【24 PRIVACY FILTER DIMENSIONS】 Width: 20 15/16" (20.9 inches/532 mm), Height: 11 13/16" (11.8 inches/299 mm) - 16:9 Aspect Ratio. Mamol computer privacy filters are designed to be perfectly compatible with HP, Samsung, Dell, Lenovo, Acer, Asus, LG, ViewSonic and other brands of monitors. Please check the width and height dimensions of your computer screen before ordering. If you have any questions about the dimensions, please contact us.
- 【ENHANCED PRIVACY PROTECTION】Mamol 24 inch computer privacy filter keeps your electronic information confidential, making it excellent for use in high traffic areas. the computer privacy screen 24 inch is designed with advanced microlouver technology to block visibility at around 30 degrees and black out screens completely near 60 degrees.
- 【EYES PROTECTION】 This blackout privacy screen greatly reduces eye strain and minimizes potential hazards to vision. It filters 99.9% of UV rays and suppresses 98% of blue light. As a reversible 24-inch privacy screen filter: The glossy side of the protector provides extra clarity and greater privacy, and the matte side minimizes glare and distracting reflections. Satisfy your different daily uses as needed.
- 【BETTER HD CLARTIY】Mamol 24 inch computer privacy screen Shield adds an extra layer of AR Ultra HD light transmission compared to others. It maintains the high definition of the screen without sacrificing too much screen brightness. It won't reduce the brightness and cause eye fatigue because of the privacy screen installed on the screen.
- 【ANTI SCRATCH & WASHABLE 】Our privacy anti-glare Monitor film has a surface enhancement layer to protect the privacy filter from scratches and fingerprints. It is washable and reusable. Even after prolonged use, you will get a brand new privacy screen for your desktop computer monitor after cleaning. Very Durable!
Cookie fields and scope
CookieData requires name and value. The documented optional fields include domain, expires, httpOnly, partitionKey, path, priority, sameSite, secure and sourceScheme. If expires is absent, the cookie is a session cookie. The reference identifies priority and sourceScheme as Chrome-only fields, so check compatibility before using them outside Chrome. CookieData API
Quick wins for a faster PC:
Repair Windows errors before they cause bigger problemsFix Now →Scan for outdated or missing drivers - takes under a minuteDriver Scan →The page-level CookieParam also accepts an optional url, which can affect default domain, path and source-scheme values. Use the page-level form when its URL-based defaults suit your case, and verify the resulting scope rather than assuming it is identical across browser and Puppeteer versions. CookieParam API
Rank #3
- 【Privacy Filter Dimensions】- Width: 20 15/16" (532 mm), Height: 11 13/16" (299 mm), Diagonal: 24" (609.6 mm) - SightPro Blackout Privacy Screen Filter is engineered to be compatible with HP, Dell, Samsung, Lenovo, LG, Acer, ASUS, ViewSonic, and other monitor brands. Please verify your computer screen's width and height measurements before ordering. It's not recommended to make your selection based solely on your computer screen's diagonal size.
- 【Two Attachment Options】- Installs in minutes. Option 1 uses clear adhesive strips that securely attach to any computer screen. Option 2 (for computer screens with a raised bezel only) uses slide mount tabs that easily stick to the display frame, allowing you to slide the privacy screen filter on and off as needed.
- 【Superior Privacy and Anti Glare】- Our advanced multi-layered film filter blacks out your computer screen when viewing from the side, while maintaining a crystal clear screen straight-on. It also protects your eyes from harmful glare, UV, and blue light. [Note: It does not block visibility directly behind you, regardless of the distance.]
- 【Perfect for Travel and Open Workspaces】- Our computer screen privacy filter is the ideal solution for healthcare providers, mobile workers, commuters, students, and business travelers. Now you can stay compliant and safeguard sensitive corporate information while working in airplanes, subways, airports and public areas.
- 【Package Contents】- Each package includes one privacy screen shield filter, two sets of clear adhesive strips, two sets of slide mount tabs, and a microfiber cleaning cloth. Buy with confidence – located in the US, Sight Pro specializes in providing best-in-class privacy solutions to individuals, small businesses, corporations, government, and educational institutions. Our privacy screens are Section 889 and TAA compliant.
Isolate cookie state between tests
Use a separate BrowserContext when one test should not inherit another test’s cookie or localStorage state. Each BrowserContext has isolated storage; in Chrome, Puppeteer’s non-default contexts are incognito. Closing a context closes its associated pages, while the default context cannot be closed. BrowserContext API
import puppeteer from 'puppeteer';
const browser = await puppeteer.launch();
const context = await browser.createBrowserContext();
try {
const page = await context.newPage();
await page.goto('https://example.com');
await context.setCookie({
name: 'test-session',
value: 'isolated-value',
domain: 'example.com',
path: '/'
});
console.log(await context.cookies());
} finally {
await context.close();
await browser.close();
}Use the same context object for the page and cookie operations. This keeps the setup, inspection and cleanup within the intended storage boundary.
Rank #4
- 【PRIVACY FILTER DIMENSIONS】- Width: 20 15/16" (532 mm), Height: 11 13/16" (299 mm), Diagonal: 24" (609.6 mm) - Peslv Dark 24 inch Privacy Screen Filter is engineered to be compatible with 24in Dell, HP, Samsung, Lenovo, LG, Acer, ASUS, Toshiba, ViewSonic, Aoc, Sceptre, PHILIPS, ViewSonic and other brands monitors with 16:9 aspect ratio. Please verify your computer screen's width and height measurements before ordering. It is not recommended to select a size based solely on the diagonal.
- 【HIGH-CLASS PRIVACY ABLE】Peslv collected suggestions from more than 2000 computer users and performed 22188 anti-peep angle corrections on the micro-blind optical technology to ensure that any line of sight beyond +-30° facing the screen will be shielded. With a Peslv computer privacy screen 24 inch, Protect the privacy of your computer monitor screen and no longer leak any confidential data.
- 【2 MOUNTING OPTIONS FOR EASY INSTALLATION】The Peslv 24 inch privacy screen for monitor supply 2 installation options, Various installation options, are Compatible with both 24" computer monitors with raised bezels and full-screen 24" computer monitors without raised bezels, and convenient installation allows you to complete the installation in 9 seconds. NOTE: Monitors without raised bezels are only available with mounting option 2.
- 【EXCLUSIVE DOUBLE-SIDED TECHNOLOGY】24-inch monitor privacy filter has a double-sided surface technology developed by Peslv. Matte or Glossy. With the matte surface facing outward, you can experience the advanced AG anti-glare technology from Germany while maintaining a 30-degree privacy angle, softening the strong light outdoors, and making the screen content clearly visible. With the glossy side facing outward, you can get a super anti-peeping effect with a privacy angle of 26 degrees.
- 【PROTECT SCREEN ALSO EYES】Filtering optical materials imported from Japan can reduce 92% of blue light and 98% of UV light, and filter all harmful light emitted from the screen to protect your eyes. The high-transparent and reinforced built-in protective layer not only presents high-definition picture quality but also protects your screen from scratches. Hurry up and place an order, own a privacy screen for a computer monitor 24 inch, and protect your monitor screen and your eyes.
Delete cookies and clean up state
For explicit cookie objects, call deleteCookie(...cookies). The browser-level method affects the default context; the context-level method limits deletion to that context. For example:
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const cookies = await browser.cookies();
const sessionCookie = cookies.find(cookie => cookie.name === 'test-session');
if (sessionCookie) {
await browser.deleteCookie(sessionCookie);
}For filter-based removal, use BrowserContext.deleteMatchingCookies(...filters). It deletes matching cookies within that context. Choose explicit objects when you already have the cookie objects to remove; choose filters when matching criteria are the clearer cleanup rule. Browser.deleteCookie() API BrowserContext.deleteMatchingCookies() API
Best Value
- [How To Determine The Screen Size]: Before Purchasing Our 24 inch privacy screen for monitor, Please Measure The Size Of Your Computer Screen First. Our computer privacy screen 24 inch Is Suitable For Computer Screens With A Width Of 20.92 Inches (53.13 Cm), A Height Of 11.77 Inches (29.89 Cm), And A Diagonal Length Of 24 Inches (60.96 Cm). (It Is Not Recommended To Choose The Size Only Based On The Diagonal Length.) The ZOEGAA 24-Inch 16:9 computer privacy screen Is Compatible With HP, Samsung, Dell, Lenovo, Acer, ASUS, Viewsonic And Other 24-Inch 16:9 Computer Monitors. Welcome To Your Purchase!
- [Outstanding Privacy Effect]: The Engineer Team Of ZOEGAA Has Collected Suggestions From Over 5,000 Computer Users And Corrected The Anti-Peep Viewing Angle Of The Micro-Blind Optical Technology For 35,462 Times To Ensure That The View Beyond ±30 Degrees Will Be Hidden. People On Your Left And Right Will See A Black Screen.
- [How To Install]: ZOEGAA 24 inch monitor privacy screen Supports 2 Installation Methods. The First One Is The Insert Type Installation, Which Is removable. The Second One Is The Mounting Adhesive Installation, Which Is Non-Detachable. For Detailed Installation Methods, Please Refer To The Pictures Or Videos In The Listing.
- [Better Clarity]: ZOEGAA privacy screen 24 inch monitor. It Has Added An AR High-Definition Light-Transmitting Layer, Which Enables The computer monitor privacy screen To Maintain Its Original Clarity While Achieving The Anti-Spy Effect; It Will Not Cause Eye Fatigue Due To The Installation Of The privacy screen for monitor.
- [Reversible Glossy And Matte Surfaces]: The 24 in privacy screen for monitor Of ZOEGAA Has Two Different Surface Textures - The Glossy Surface Offers Better Anti-Peeping Effect, While The Matte Surface Provides Better Anti-Glare Performance. The Matte Surface Is Suitable For Use In Strong Light Environments. This 24 inch monitor privacy screen Also Has Anti-scratch And Anti-Fingerprint Functions, Ensuring That You Won't Worry About Being Damaged By sharp Objects During Use. It Is Washable And Can Achieve A Brand-New Appearance After Being Washed.
Troubleshoot common cookie problems
- The cookie does not appear: Check that you are reading from the same BrowserContext where it was set, and that the cookie’s domain and path match the page. Navigate to the target site before inspecting when the test depends on its origin.
- The cookie is visible in one test but not another: Separate contexts intentionally isolate storage. Set and read the cookie through the context that owns the page, or use the default-context browser methods consistently.
- A cookie works in Chrome but not another browser: Verify optional fields against the browser and installed Puppeteer version. The API reference marks
priorityandsourceSchemeas Chrome-only. - Deletion leaves state behind: Ensure the object passed to
deleteCookieis the cookie you intend to remove, or use a context-level matching filter. Also confirm cleanup is targeting the same context as the cookie. - A cookie expires unexpectedly: Check the
expiresvalue and whether the cookie is intended to be a session cookie. An omitted expiry means session-cookie behavior in the documented CookieData type.
Or skip the browser setup
If your goal is to capture a website screenshot rather than automate cookie state inside a test, ScreenshotNeo offers a screenshot API and MCP server. One GET request returns a screenshot or PDF:
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 docs for options. Before capture, it can accept cookie/consent banners and remove more than 60 known consent platforms, newsletter popups and chat widgets; each step can be turned off. Bot checks, blank pages, timeouts, failed loads and cache hits are not billed, and response headers report the page verdict and billing status. Its MCP server provides take_screenshot, get_page_info and capture_pdf for AI agents. The Free plan includes 1,000 shots a month without a card; paid plans start at $5 for 3,000 shots.
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Frequently Asked Questions
Which Puppeteer method should I use to read cookies?
Use browser.cookies() for the default BrowserContext or context.cookies() for a particular context.
Are Puppeteer cookies shared between BrowserContexts?
No. BrowserContexts isolate storage, including cookies and localStorage.
Quick Recap
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