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Screen Size Checker vs Tooleek

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 Tooleek
DetailScreen Size Checker logo Screen Size CheckerTooleek logo Tooleek
What it doesInstant screen resolution and viewport size checker for developers and designers Free online tools that run in your browser
StageNot given Not given
FoundedNot given Not given
Based inNot given KR
Pricing modelFree Free
PricingNot given All tools are free. Optional AI features have free-request limits.
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
  • Image compression and conversion (HEIC to JPG, resize, blur, GIF creation)
  • PDF tools (merge, split, rotate, convert to/from JPG, compress, watermark)
  • QR code and barcode generation and scanning
  • Unit converter with BMI calculator and multiple conversion types
  • Word counter and text tools (case, lines, dev, password, lorem, Korean names)
  • Timer, stopwatch, alarm, metronome and calendar tools
  • Typing tests in multiple languages with key drills
  • Reaction and memory tests including aim trainer, chimp test, snake game
  • Puzzles including sudoku, solitaire, gomoku and minesweeper
  • Random generators (wheel, ladder, coin flip, dice, brackets)
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
  • Runs entirely in browser with no file uploads to servers
  • No sign-up or account required
  • Completely free with ads supporting operations
  • Available in five languages
  • History and preferences stored locally in your browser only
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 checkNot checked yet no change since last check
Trust Flow (Majestic)55
Citation Flow (Majestic)2517
Referring domains (Majestic)449

4 details filled in for both companies.

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