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500 ToolBox vs Screen Dimensions

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

500 ToolBox compared with Screen Dimensions
Detail500 ToolBox logo 500 ToolBoxScreen Dimensions logo Screen Dimensions
What it doesFree online tools for images, PDF, video, text and more Read your screen size, resolution and refresh rate live in your browser
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFreemium Free
PricingWebsite tools: free, no limits except fair daily limits on server-based tools. API: 50 free monthly credits plus 100 on the 1st of each month. Credit packs: Starter $5 (1,000 credits), Growth $25 (5,000 credits, 20% off), Scale $80 (25,000 credits). Not given
Key features
  • Image compression and resizing
  • PDF manipulation: merge, split, compress, convert to images
  • Video compression and conversion
  • AI background removal
  • Developer tools: JSON formatting, regex testing, JWT decoding
  • Text tools: word count, case conversion, diff checking
  • QR code generation and customization
  • Chrome extension with 50 tools
  • Server API with 30 endpoints and MCP integration
  • Business tools: invoice generator, password generator, calculators
  • Live screen resolution detection in CSS and physical pixels
  • Device pixel ratio measurement
  • Browser window size detection
  • Display refresh rate checker
  • Color range detection
  • Physical screen size measurement with bank card
  • TV size calculator by seating distance
  • Dead pixel test
  • Screen comparison tool at scale
  • Refresh rate test
What makes it different
  • All tools are completely free with no signup required
  • Zero data retention: files stay private and never leave your device
  • Over 500 tools across 20+ categories
  • Most tools run in browser without uploading files
  • Progressive Web App with offline capability
  • All measurements run in your browser with no data sent to servers
  • Uses bank card calibration to measure actual physical screen size
  • Reference data cross-checked against manufacturers' spec sheets
  • Distinguishes between diagonal screen size and width/height dimensions
  • Shows real panel resolution accounting for display scaling and pixel ratio
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)21 −1 (down) since last checkNot checked yet no change since last check
Trust Flow (Majestic)93
Citation Flow (Majestic)164
Referring domains (Majestic)44

4 details filled in for both companies.

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