@ericlaw built this page long ago; it's now used as a quick place to poke interesting Web Browser APIs.

Your User-Agent String

ArchiveTeam ArchiveBot/20210517.c1020e5 (wpull 2.0.3) and not Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.90 Safari/537.36

Your User-Agent string is 170 characters.

Your browser sent the following headers:
Connection: Keep-Alive
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Encoding: gzip
Host: www.enhanceie.com
User-Agent: ArchiveTeam ArchiveBot/20210517.c1020e5 (wpull 2.0.3) and not Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/42.0.2311.90 Safari/537.36
CF-IPCountry: US
X-Forwarded-For: 2602:808:4000:1::b37a
CF-RAY: 679a200a4b7d0252-SJC
X-Forwarded-Proto: http
CF-Visitor: {"scheme":"http"}
CF-Connecting-IP: 2602:808:4000:1::b37a
CDN-Loop: cloudflare
X-Original-URL: /ua.aspx
HTTPBrowserCapabilitiesASPNET's HTTPBrowserCapabilities object reports that, based on the User-Agent, your Browser has the following capabilities:
Type = Chrome42
Name = Chrome
Version = 42.0
Major Version = 42
Minor Version = 0
Platform = WinNT
Is Beta = False
Is Crawler = False
Is AOL = False
Is Win16 = False
Is Win32 = True
Supports Frames = True
Supports Tables = True
Supports Cookies = True
Supports VBScript = False
Supports JavaScript = True
Supports Java Applets = True
Supports ActiveX Controls = False

Supports scroll-to-text-fragment? Try it; in a new window in a new noopener window - Purple highlight if target-text Selector is supported
chrome.exe --enable-blink-features=CSSTargetTextPseudoElement https://wpt.live/css/css-pseudo/parsing/target-text.html

more...

Server Date/Time:Wed, 04 Aug 2021 19:17:19 GMT

Your public IP address: 172.68.142.252
navigator.onLine:
navigator.connection:

getUserAgent(): ?
🔋 Battery Status: ?
prefers-color-scheme:
prefers-reduced-motion:
estimated Storage: (null)

Compression Streams

Explainer demo



CSS Color rebeccapurple Test
Emoji Flags: 🇺🇳 🇺🇸 🇹🇼
 
Image-Formats:  Fail SVG SVGZ Fail APNG Fail:TIFF Fail:jpeg-xr Fail:jpeg-xl Fail WebP  Fail WebPanim   Fail XBM Fail HEIC Fail AVIF

URL whitespace tests

embedded space embedded \t in scheme embedded \r\n embedded \t\r\n

Content-Encoding tests

Fail Zlib-wrapped DEFLATE Fail Brotli HTTPS Brotli on HTTP (should fail)

Cross-Origin-Resource-Policy

You should NOT see all of the images here.
Fail SameOrigin Fail SameSite webdbg.com SameOrigin webdbg.com SameSite

MIME

Willing to run JavaScript from text/html? Nope
Willing to run JavaScript from text/plain? Nope
Willing to run JavaScript from image/svg+xml? Nope
Willing to run JavaScript from image/gif? Nope
IFrame SrcDoc:
Picture:
# Broadcast Channel demo Broadcast a message to other instances:
# Page Visibility & Lifecycle Visibility Docs DiscussionPage Lifecycle API
# NavigationTiming
Edge gpu  !!  el  webdbg  domain  _top  Refresh loop MITM?  f  f2  view-source  microsoft-edge edge ms-availablenetworks:
# Ancient UA String Stuff

About the User-Agent String

The User-Agent (or UA) string is sent along in the headers of every HTTP request so the server knows what type of browser is making the request. For a quick refresher on the User-Agent string, check out George Shephard's article in MSDN Magazine. Two MSDN articles describe User-Agent headers: Understanding User-Agent Strings, and Best Practices for detecting the Internet Explorer version.

Want Internet Explorer to simulate another version? 

IE8+ users: Check out the free User-Agent Picker add-on, which enables changing your UA string without restarting the browser.

Otherwise, run one of the following scripts and restart all browser instances to see the change:


The following script commands will generate a text file containing all UA-override registry settings.
reg query "HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\User Agent" /s > Reg.txt
reg query "HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\User Agent" /s >> Reg.txt
reg query "HKLM\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\User Agent" /s >> Reg.txt
reg query "HKLM\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\User Agent" /s >> Reg.txt
reg query "HKCU\SOFTWARE\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\User Agent" >> Reg.txt
reg query "HKLM\Software\Microsoft\Windows\CurrentVersion\Internet Settings\User Agent" /s >> Reg.txt
reg query "HKLM\SOFTWARE\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\User Agent" >> Reg.txt


See this page using different modes: X-UA-Compatible: IE=7 X-UA-Compatible: IE=8 X-UA-Compatible: IE=9 HTML5 DTD No DocType Quirks Legacy DTD Quirks

©2003-2021 Eric Lawrence