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Screen Size Checker vs QRThis

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

Screen Size Checker compared with QRThis
DetailScreen Size Checker logo Screen Size CheckerQRThis logo QRThis
What it doesInstant screen resolution and viewport size checker for developers and designers Free QR code generator with editable dynamic QR codes you can update after printing
StageNot given Not given
FoundedNot given Not given
Based inNot given US
Pricing modelFree Freemium
PricingNot given Free: unlimited static QR codes, custom colors and sizes, PNG and SVG downloads, free API (100 requests per IP per day), 1 dynamic QR code. Pro Lifetime: $29 one-time for unlimited dynamic QR codes, edit destinations anytime, scan tracking, priority support.
Key features
  • Screen Resolution Detection
  • Viewport Size Measurement
  • Device Pixel Ratio (DPR) Check
  • Operating System Detection
  • Browser Version Information
  • Touch Support Detection
  • User Agent String Display
  • Real-time Screen Analysis
  • Customizable colors, sizes (256, 512, 1024px), and logo upload
  • Download QR codes as PNG or SVG
  • Scan tracking with date, time, and country data
  • Public API with 100 requests per IP per day
  • Instant updates without reprinting
  • Commercial usage with no license or attribution required
What makes it different
  • Real-time detection of browser viewport, screen resolution and device specifications without installation
  • Helps developers create responsive websites that look great on all devices
  • Educational resources explaining CSS pixels versus physical measurements
  • Maintained as independent web tool kept fast, readable and useful
  • Change where a QR code points after printing without creating a new code
  • No signup required for static QR code generation
  • One-time $29 lifetime purchase instead of a subscription
  • Privacy-focused scan tracking without IP storage or device tracking
  • Free public API with no authentication required
Free planNot given Not given
Open sourceNot given Not given
PlatformsNot given Not given
Public APINot given Not given
Community votes00
DR (Domain Rating by Ahrefs)23 no change since last check9 no change since last check
Trust Flow (Majestic)50
Citation Flow (Majestic)2514
Referring domains (Majestic)445

4 details filled in for both companies.

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