Common Browser User-Agents
Free online collection of common browser User-Agent strings for PC and mobile.
Tool Guide
Introduction to the Online Directory of Common Browser User-Agents
The Browser User-Agent Directory collects a large number of common browser User-Agent strings, including those of browsers commonly used on PC and mobile (such as Chrome, Firefox, Safari, Edge, IE, Android browsers, iOS Safari, etc.).
A User-Agent (UA) is a special identification string that a browser or client device sends to a server.
It contains the operating system information, browser version, device model, rendering engine, and more, and is an important basis for front-end adaptation and server-side device type identification.
This tool is suitable for: simulating different browser UA behavior during web development and debugging, device identification, user adaptation, behavior analysis reference, SEO crawler identification testing, learning UA structure, and more.
How to Use the Browser User-Agent Directory
Step 1: Open the page to view a categorized summary of User-Agent strings for different browsers.
Step 2: Find the UA you need, grouped by "browser name + system platform."
Step 3: Copy the corresponding User-Agent string for use in development, testing, or simulation environments.
To view your current device's UA in real time, use the Online Browser Device Info UserAgent Lookup Tool. For more detailed IP and fingerprint information, use Fingerprint Detection Master for in-depth identification.
Frequently Asked Questions About Browser UAs (FAQ)
What is a User-Agent?
A User-Agent is a string that a browser sends to a server, used to describe device information, browser type, operating system version, and more.
Why do I need to simulate or view a UA?
For debugging web page compatibility, developing mobile adaptation logic, server behavior testing, SEO crawler identification testing, and more.
Can a UA be faked?
Yes. Developers can fake a UA to simulate access from various devices through browser developer tools, proxy plugins, or back-end settings.
How do I view my current device's UA?
Please use our Online Browser Device Info UserAgent Lookup Tool to obtain your real UA with one click.
Related Tools
Emoji Reference
Complete emoji reference with online lookup and copy functionality.
Special Symbols
Collection of special symbols including emoji, math symbols, arrows and special text.
HTML Color Code Table
Common HTML color code table for web development with HEX/RGB values and preview.
ASCII Table
Complete ASCII code table with control characters, printable characters and extended ASCII codes.
MIME Type Reference
A comprehensive MIME type (Multipurpose Internet Mail Extensions) reference. Look up the standard Content-Type for any file extension (.json, .pdf, .mp4) along with its transfer format.
HTML Entity Reference
A quick-reference table of common HTML character entities. Look up and copy the named, decimal and hexadecimal codes for special characters (non-breaking space, copyright sign, Greek letters) to avoid markup conflicts.