Kastavo vs Online Ruler

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

Kastavo compared with Online Ruler
Detail	Kastavo	Online Ruler
What it does	Free online tools to convert files, calculate values, generate codes and transform text in your browser	Measure anything on your screen with pixel-perfect accuracy
Stage	Not given	Not given
Founded	Not given	Not given
Based in	BR	Not given
Pricing model	Free	Free
Pricing	Not given	Not given
Key features	Compress and convert images (JPG, WebP, PNG) Merge, split and convert PDF documents QR code generator for text, links, Wi-Fi, Pix, vCard and SMS Word and character counter with real-time processing JWT decoder showing header, payload and expiration Compound interest calculator with monthly contributions Color picker showing HEX, RGB and HSL values Unit converters for length, temperature and more Video compression by selecting resolution and quality Freelance hourly rate calculator for income goals	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
What makes it different	All tools run entirely in your browser with no file uploads or server processing Fast results with instant processing directly in your browser No sign-up required with no hidden limits or paywalls Available in three languages with localized units and formats Regularly updated catalog with new tools added continuously	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
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	1 no change since last check
Trust Flow (Majestic)	0	0
Citation Flow (Majestic)	21	17
Referring domains (Majestic)	5	4

4 details filled in for both companies.

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