Online Ruler vs HTML to URL

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 HTML to URL
Detail	Online Ruler	HTML to URL
What it does	Free on-screen measuring tools that run in your browser	Convert HTML code into shareable URLs in seconds without deployment
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	Not given
Pricing model	Free	Freemium
Pricing	Not given	Free: 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.
Key features	Actual-size ruler in cm, mm and inches Bank-card and screen-diagonal calibration Top, left and right rulers with drag-to-measure readout Full-screen mode and browser-zoom warning Image measurement tool Length unit converter Touch dragging support for phones and tablets Local storage of calibration without server uploads	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
What makes it different	Calibration step compensates for browsers' inability to detect physical display size ISO/IEC 7810 ID-1 standard bank card calibration ensures reproducible accuracy All calculations run locally in your browser with no data sent to servers Works on any device with a browser and JavaScript enabled Content follows standards-based principles with no invented precision or fake reviews	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
Free plan	Not given	Not given
Open source	Not given	Not given
Platforms	Not given	Not given
Public API	Not given	Not given
Community votes	0	0
DR (Domain Rating by Ahrefs)	Not checked yet no change since last check	27 no change since last check
Trust Flow (Majestic)	2	8
Citation Flow (Majestic)	18	21
Referring domains (Majestic)	10	65

4 details filled in for both companies.

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