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QRThis vs Online Ruler

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

QRThis compared with Online Ruler
DetailQRThis logo QRThisOnline Ruler logo Online Ruler
What it doesFree QR code generator with editable dynamic QR codes you can update after printing Measure anything on your screen with pixel-perfect accuracy
StageNot given Not given
FoundedNot given Not given
Based inUS Not given
Pricing modelFreemium Free
PricingFree: 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. Not given
Key features
  • 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
  • Smart Auto-Detect identifies your device from a database of 100+ profiles
  • Three calibration methods: auto-detect, screen diagonal, and credit card
  • Place rulers on any edge of the screen in any combination
  • Click-to-measure distances in any direction
  • Live cursor position tracking
  • Dark mode with automatic system preference detection
  • Support for four measurement units: cm, mm, inches, and pixels
What makes it different
  • 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
  • No installation required—runs entirely in your web browser
  • Achieves near pixel-perfect accuracy typically within 0.5mm for well-calibrated screens
  • Completely free with no ads, account, or limitations
  • Calibration saved locally so no need to recalibrate on each visit
  • Works on tablets and mobile devices with touchscreen support
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)9 no change since last check1 no change since last check
Trust Flow (Majestic)00
Citation Flow (Majestic)1417
Referring domains (Majestic)54

4 details filled in for both companies.

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