Oct 15, 2025 · Here’s a list of the best annotation tools for documents, images, videos, audio, data, web, and code annotation.

Mark up, highlight, and add text on your PDFs right in your browser for free. Easily annotate PDFs online for faster feedback and easier edits. No downloads or signups needed.

Jan 30, 2025 · Want to add information to text, images, PDFs, or other content? Check out the top 10 annotation tools to supercharge your editing process.

Instantly create detailed annotations for texts, documents, and data with our smart annotation generator. Save time and effort by automating your annotation process while maintaining accuracy and …

Generate text annotations for free — no sign-up required. This AI Annotation Generator helps you summarize, highlight, and organize key ideas easily.

Jun 23, 2025 · This article highlights the top five free annotation tools, detailing their pros, cons, suitability for beginners or pros, and their best use cases, with a focus on customer collaboration.

Markup Hero is a powerful, free application to take & share screenshots as well as annotate images, PDFs & websites.

Our annotations are smooth, fast, and anchored in place as you zoom and navigate, making your content look professional and engaging. Save your annotations in your account for review later....

SuperAnnotate is the cornerstone of your data labeling pipeline. It brings you a cutting-edge annotation tool for all types of data including image, video, text, audio, and more. Improve your existing model’s …

Turn any webpage into a collaborative canvas. Annotate, share annotation URLs, collaborate in real-time, and export as PNG. Free online tool with no registration needed.