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HTML to URL vs ReactionTests

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

HTML to URL compared with ReactionTests
DetailHTML to URL logo HTML to URLReactionTests logo ReactionTests
What it doesConvert HTML code into shareable URLs in seconds without deployment Test your visual reaction time for free
StageNot given Not given
FoundedNot given Not given
Based inNot given Not given
Pricing modelFreemium Free
PricingFree: one URL for 3 days. Starter: $9/month for 3 editable URLs. Pro: $15/month for 10 editable URLs with password protection. Business: $25/month for 50 editable URLs with password protection. One-time payment option to extend current files at the same URL. Not given
Key features
  • Convert HTML code to shareable URL
  • Live browser preview before publishing
  • Upload HTML files (.html/.htm)
  • 20MB HTML size limit
  • No account required for initial use
  • Custom htmltourl.app addresses on paid plans
  • Password protection on Pro and Business plans
  • Noindex generated pages to avoid SEO impact
  • Update files at the same URL on paid plans
  • Remove HTMLtoURL branding on paid plans
  • Five-round visual reaction test with millisecond timing
  • Seven-round sound reaction time test
  • Local result history with up to 300 sessions stored
  • Consistency measurement showing standard deviation of scores
  • Download score card as image
  • Sound calibration for personal offset adjustment
  • Reference data from published research studies
What makes it different
  • No deployment or server setup required
  • Built specifically for AI-generated HTML
  • Instant preview before sharing
  • Share as a single URL instead of files or deployment instructions
  • Safer indexing defaults to protect SEO
  • No account or login required to use the test
  • Results stored locally in browser for privacy
  • Compare full sessions to understand consistency, not just fastest round
  • Research-backed reference data from laboratory studies
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)27 +1 (up) since last check3 no change since last check
Trust Flow (Majestic)80
Citation Flow (Majestic)2111
Referring domains (Majestic)651

4 details filled in for both companies.

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