MarkLayer

Draw & comment on any webpage — share one live link

What it does

Annotate any webpage with drawings, highlights, threaded comments, and arrows — then share one link. Anyone who opens it sees your annotations live, with real-time cursors and synced updates via WebSocket. Voice and video chat included via WebRTC. No account required. Open source. Auto-expires in 30 days.

Does the same job

all alternatives →

MarkUp for Chrome2020 · ▲389
Turn any URL into a canvas for feedback from your browser
Instacap2022 · ▲127
Async annotation & visual feedback
MarkUp2020 · ▲454
Turn your website into a dynamic canvas ready for feedback
UselinkJun 2026 · uselink.app · ▲154
host your html, share the link, and get comments
Sidenote2024 · ▲268
Comment and live chat on any page of the internet
Pastel Bookmarklet2019 · ▲130
Mark up any website from your browser, for free

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