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Screen Size Checker vs 99Tools

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 99Tools
DetailScreen Size Checker logo Screen Size Checker99Tools logo 99Tools
What it doesInstant screen resolution and viewport size checker for developers and designers 800+ free online tools for text, code, web, and data processing
StageNot given Not given
FoundedNot given Not given
Based inNot given IN
Pricing modelFree Free
PricingNot given Not given
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
  • 800+ tools across multiple categories
  • Case converters for text transformation
  • JSON formatter and validator
  • Image compression and conversion
  • Password generator
  • CSS gradient generator
  • HTML formatter
  • Browser-based execution without installation
  • Local data processing for privacy
  • Mobile responsive design
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
  • All tools are completely free with no signup required
  • Fast performance with minimal ads and no tracking
  • Data privacy through local browser processing
  • Clean interface without clutter or popups
  • Works on all devices including mobile
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 check38 no change since last check
Trust Flow (Majestic)517
Citation Flow (Majestic)2521
Referring domains (Majestic)4482

4 details filled in for both companies.

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