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A collection of useful tools and experimental features I've built for various purposes. Some are ready to use, others are still in development.
Mindful breathing sessions with a pulsing orb, multiple techniques, and light/dark themes. Installable PWA.
Live pose landmarks and skeleton overlay from your webcam — on-device Edge AI.
Real-time facial emotion recognition from your webcam — fully client-side.
Live speech-to-text from your microphone — streamed onto the page as you talk.
Convert text to Braille and back. Russian, Belarusian, English.
Generate hashes (SHA-1/SHA-2/MD5/SHA3/SHAKE) locally in your browser with instant output and copy.
Convert images to Base64 data URIs, CSS background rules, or HTML img tags — locally in your browser.
Optimize your SVG code by removing unnecessary attributes, empty groups, and metadata
Compress and optimize images for web
Generate placeholder URLs with custom size or random illustration
Upload an image and extract text with support for Russian, English, and digits
Generate QR codes and barcodes (Code128, EAN-13, Data Matrix, and more) right in your browser.
Useful emoji for code review comments with quick copy for GitHub, GitLab, and other tools.
Interactive visualization of the JavaScript runtime: Call Stack, Web APIs, Task Queue, and Microtask Queue.
Interactive visualization of JSX parsing and React Fiber reconciliation process with animated data flow
Algorithm categories, focused implementations, and interactive visualizations for learning by example.
Chat with an AI assistant powered by free AI models. Ask questions, get help, or have a conversation.
Connect to a BBC micro:bit v2 from the browser via Web Bluetooth or USB and send UART protocol commands.
Chat with Alice skills in the browser: My Microbit and The Witcher for Matvey.