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How MarkLayer works, in plain English
MarkLayer has no sign-up, which is the whole point, but it also means there is no inbox of past work to fall back on. This guide answers the questions that come up in the first five minutes: where your marks are stored, what survives closing the tab, and how to find the link again.
Website feedback tools in 2026, twenty-one compared
I make one of the tools in this table, so read the table before you read me. Twenty-one tools that let someone comment on a live webpage, compared on four things: what the cheapest paid plan costs, whether the reviewer needs an account, whether the reviewer needs a browser extension, and what happens to the comments afterwards. Every figure was read off the vendor's own pricing page on 29 August 2026.
How to annotate a website, four ways
To annotate a website you have four options: mark up a capture using tools already on your computer, install a browser extension that draws on the live page, open the page through a web annotator and send someone the link, or use your browser's developer tools. Which one is right turns almost entirely on whether anyone else has to reply. I make one of the tools mentioned below, and it is named as one option inside one method rather than as the answer.
How to annotate a PDF for free
You can write on a PDF for free right now, with software already installed, and no account. Preview does it on a Mac. Edge does it on Windows. Acrobat Reader does it on both. Where all three fall over is the second person: each one saves your marks into a file, and a file cannot hold a reply. Here is each route, and what to use when the review is a conversation rather than a note to yourself.
How to annotate an image or screenshot
An arrow on a screenshot is the fastest feedback there is, and every operating system draws one for free. What none of them carry is the reply. The annotated PNG lands in a chat, someone answers three messages later, and by the second round nobody can tell which version of the image the comment belongs to. Here are the free ways to mark up an image, and what to do when the image needs a thread attached to it.
The best free website annotation tools in 2026, audited
Three tools in this category have no paid tier at all: MarkLayer, Hypothesis and AnnotateWeb. Everything else marketed as free caps a canvas, a seat or a monthly credit count before the bill starts. Each limit below was read off the vendor's own pricing or help page on 24 September 2026.
Collecting website feedback without making anyone log in
The fastest way to lose a review round is to put a signup form in front of the reviewer. Most feedback tools solved half of this: the reviewer gets guest access, while the person running the review still needs an account, a workspace, and a plan. Here is who requires what, audited in August 2026.
The Markup.io price hike: what changed and what it costs now
Markup.io ran one of the best-known free tiers in visual feedback until early 2025, when the free plan was discontinued and Pro rose from $29 to $79 per month. Pro has since become usage-tiered at $79 to $129 a month, with a Business tier from $499 above it. This page tracks the current published pricing and the practical options for teams the change displaced, verified against markup.io's pricing page in October 2026.
MCP servers for bug reports and visual feedback, compared
An MCP server lets an AI coding agent read your bug reports and annotations directly, instead of you pasting screenshots into a chat. Five visual-feedback tools ship one as of August 2026. They differ on the question that matters: can the agent only read the feedback, or can it work the feedback?
Give your AI coding agent visual feedback from a live webpage
An AI coding agent cannot see your screen, so the usual workaround is a paragraph describing which element is wrong, or a screenshot it reads imprecisely. Connecting it to a MarkLayer room instead gives it the actual annotation: the instruction, the CSS selector, and the element context, plus a way to mark its own progress that the human reviewer sees update live on the page. The shortest path needs nothing installed: every share link is also an MCP server, so Claude Code connects with one command. Codex, Cursor, and Windsurf take the same server through their own config file.
Sending MarkLayer annotations to Jira, Linear, Slack and more
MarkLayer can send annotations to eight places: Slack, Microsoft Teams, Discord, a generic webhook, Linear, GitHub, Jira and Trello. The four chat destinations post automatically as feedback arrives. The four issue trackers wait for you to pick one annotation and file it. Nothing about a filed issue's later status flows back into MarkLayer, in either direction.
Open-source website annotation tools in 2026
Of the eight open-source tools checked here, only two let a reviewer mark up a live page you share with them: MarkLayer (Apache-2.0) for visual feedback and Hypothesis (BSD-2-Clause) for text. For open-source bug reports in the style of Jam or BugHerd, BugPin, Crikket and OpenJam fill that gap. Every license below was read from the project's GitHub repository on 7 October 2026.
Try MarkLayer
Paste any URL at marklayer.app and annotate the live page in your browser. No install, no account, no sign-up. Recipients of your share links don't need to install anything either.
Annotate a page