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Sidemark
Comment and leave notes directly on any webpage.
Sidemark lets you read and leave comments on any website — news articles, YouTube videos, product pages, blog posts, and more. Comments are shared across all users, so when you visit a URL, you see what others have written — and they'll see yours. Share your thoughts on a specific Netflix scene, leave notes on a blog post, or collaborate on a project. It turns the entire web into an interactive comment section.
Hi Product Hunt! 👋
I'm thrilled to launch Sidemark today!
The Inspiration & Problem:
Have you ever read a blog post, looked at technical documentation, or even watched a scene on Netflix and immediately wanted to leave a comment exactly on that spot? I realized that existing web annotation tools were mostly built just for developer QA. They were clunky, restrictive, and didn't work universally. I wanted something fast, clean, and truly universal for everyday browsing.
How the approach evolved:
My goal was to build a tool that turns the entire internet into your personal comment section. I focused heavily on keeping the UI transparent and minimal so it works seamlessly on literally any webpage without getting in your way.
Here is what you can do:
🌐 Annotate ANY Website: Leave your thoughts directly on news articles, Wikipedia pages, personal blogs, or documentation.
🍿 Even Media Sites: Yes, it perfectly works on platforms like Netflix or YouTube to react to specific moments!
💼 Boost Productivity: Use it to leave quick, contextual visual feedback on live websites for your team or clients.
Sidemark is completely free. I would absolutely love to hear your feedback, feature requests, or answer any questions you might have!
Let me know what you think. Thanks! 🚀
About Sidemark on Product Hunt
“Comment and leave notes directly on any webpage.”
Sidemark was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #99 on the daily leaderboard. Sidemark lets you read and leave comments on any website — news articles, YouTube videos, product pages, blog posts, and more. Comments are shared across all users, so when you visit a URL, you see what others have written — and they'll see yours. Share your thoughts on a specific Netflix scene, leave notes on a blog post, or collaborate on a project. It turns the entire web into an interactive comment section.
On the analytics side, Sidemark competes within Chrome Extensions, Productivity and Social media marketing — topics that collectively have 712.3k followers on Product Hunt. The dashboard above tracks how Sidemark performed against the three products that launched closest to it on the same day.
Who hunted Sidemark?
Sidemark was hunted by Ali Kural. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of Sidemark including community comment highlights and product details, visit the product overview.
Ali Kural