Crafting lightweight, privacy-focused digital tools with precise code and zero bloat.
Small software. Real utility.
Mark Digital is an independent software studio founded by Oleksandr Markov. I create browser extensions, open-source libraries, and focused web applications that solve real problems while respecting users' privacy and attention.
BlockDistraction Core product
A privacy-focused browser extension that blocks distracting websites, supports scheduled rules, focus sessions, password protection, statistics, redirects, categories, and simultaneous blacklist and whitelist workflows.
Available across major browser platforms with a universal Pro license. The extension performs its core blocking locally and does not track browsing activity.
Active Extension Users
3,000+
Floating TOC Open source
A dependency-free JavaScript library for generating a responsive floating table of contents with active heading tracking, multiple layouts, and extensive visual customization.
during its first 24 hours on npm
Useful Web Tools Live
A growing collection of focused browser-based utilities. Each project works without registration and is designed to remain simple, fast, and useful.
MetaTag
Generate SEO, Open Graph, Twitter Card, canonical, robots, browser appearance, JSON-LD markup and favicons in one place.
MetaTagCSS Craft
Practical CSS generators, visual utilities, and front-end helpers.
CSS CraftSave Page
Convert and save readable webpage content as Markdown, HTML, or PDF.
Save PageTestLoad
Generate files of an exact size, sample CSV and JSON datasets, and downloadable text files directly in your browser.
TestLoadTrick Tools
Small everyday utilities collected in one lightweight toolbox.
Trick ToolsA11y Toolbar
A11y Toolbar adds a floating set of user preference controls to a page and supplements a website's accessibility.
A11y ToolbarHide & Highlight Browser utility
A browser extension for hiding distracting webpage elements and highlighting important fragments. Built with plain JavaScript and designed for immediate, low-overhead interaction with page content.
Extension Projects Updating
A dedicated home for my browser extensions, themes, experiments, and developer-focused extension tools. The current version remains available while a broader update is being prepared.