Weekend Projects Easy 4,400/mo

Browser User Agent Parser

Parse user agent strings into device, OS, and browser data. Turn cryptic UA strings into structured data — device type, OS version, browser name, and bot detection.

APIAnalytics
MRR Potential
$2K–$6K
Time to MVP
1 weekend
Search Volume
4,400/mo
Market Size
$300M

The Problem

User agent strings are cryptic and inconsistent. Parsing UA strings correctly requires maintaining complex regex patterns. Client Hints are replacing user agents but adoption is partial. No simple API returns structured device data from UA strings. Bot detection requires maintaining lists of known bot patterns.

The Solution

User agent parsing API that converts raw UA strings into structured data — browser name/version, OS, device type, bot detection — with Client Hints support and real-time API.

Target Audience

Analytics teams enriching visitor data, developers building device-specific features, and security teams detecting bot traffic

Key Features

1
Parse any user agent string into structured browser, OS, and device data
2
Bot and crawler detection identifying Google, Bing, and 1000+ bots
3
Client Hints support for modern browser detection
4
Bulk parsing for processing log files and analytics exports
5
Device type classification: desktop, mobile, tablet, smart TV, console
6
Real-time API with sub-10ms response times at the edge

Market Opportunity

Market Size
$300M — Analytics and device detection
Monthly Searches
4,400/mo
MRR Potential
$2K–$6K
Why Now?

User agent deprecation plans make parsing harder. Client Hints adoption is growing. Bot detection is essential for analytics accuracy. Edge computing enables low-latency APIs. Simple dev tools have loyal users.

Revenue Model

Free: 1K parses/day. Pro: $5/mo (10K/day + bot detection). Business: $15/mo (100K/day + bulk). Annual: 20% discount.

Competitive Landscape

UAParser.js

Open-source library. Free, JavaScript-only, no API, no bot detection

DeviceAtlas

Device detection. $5K+/yr, enterprise, comprehensive

WhatIsMyBrowser API

UA parsing. $10+/mo, decent, limited free tier

Custom regex parsing

Breaks with new browsers, maintenance burden, incomplete

Recommended Tech Stack

Next.jsua-parser-js enhancedVercel EdgeStripe

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