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Online Ruler vs A2Z Tools

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

Online Ruler compared with A2Z Tools
DetailOnline Ruler logo Online RulerA2Z Tools logo A2Z Tools
What it doesMeasure anything on your screen with pixel-perfect accuracy Free online tools for files, media, text, code and business. No sign-up required.
StageNot given Established
FoundedNot given 2021
Based inNot given IN
Pricing modelFree Freemium
PricingNot given A2Z Tools core offering is free. A2Z Workspace apps are free with an account. Pro plans for individual apps are coming soon with pricing to be announced. A2Z Everything will add ad-free access to all A2Z tools.
Key features
  • 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
  • 1,122 free tools across 52 categories
  • No signup required to use most tools
  • Browser-based processing for most tools
  • Mobile and tablet compatible
  • Browser extensions for Chrome, Firefox, and Edge
  • Free API access
  • Embeddable widgets for websites
  • Chat widgets for WhatsApp, Telegram, Facebook, Viber
What makes it different
  • 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
Not given
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)1 no change since last check27 no change since last check
Trust Flow (Majestic)017
Citation Flow (Majestic)1731
Referring domains (Majestic)451

3 details filled in for both companies.

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