Kirio

Highlight texts, PDFs and annotate YouTube timestamps, and save notes to your Kirio account.

Kirio is a web and PDF highlighter built for people who learn from the internet. Highlight important text on webpages and PDFs, organize your highlights with multiple colors, and keep them connected to their original source. Learning from YouTube? Create timestamped annotations for notes, questions, ideas, and important moments, so you can return to exactly where something caught your attention. Kirio brings these captures together in one place and syncs them to your Kirio account, making it easier to build on the information you find instead of letting it disappear after you close the tab. With Kirio, you can: • Highlight text on webpages • Highlight and annotate PDFs • Use multiple highlight colors • Preserve source information • Annotate YouTube videos at specific timestamps • Sync your captures across supported devices • Bring your web knowledge into your existing learning workflow with Obsidian Kirio is built around a simple idea: The things you learn should stay connected to where you learned them. Built for students, researchers, and curious people who don't just consume information they build knowledge from it.