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99Tools 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.

99Tools compared with Online Ruler
Detail99Tools logo 99ToolsOnline Ruler logo Online Ruler
What it does800+ free online tools for text, code, web, and data processing Measure anything on your screen with pixel-perfect accuracy
StageNot given Not given
FoundedNot given Not given
Based inIN Not given
Pricing modelFree Free
PricingNot given Not given
Key features
  • 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
  • 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
  • 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
  • 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)38 no change since last check1 no change since last check
Trust Flow (Majestic)170
Citation Flow (Majestic)2117
Referring domains (Majestic)824

4 details filled in for both companies.

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