A free, browser-based tool to annotate images. Draw shapes, add text, use a pen, and apply mosaic/blur effects to highlight or redact information. No uploads required.
Use rectangles, ellipses, and arrows to draw attention to important details in screenshots, photos, and diagrams.
Add text directly onto your images to provide context, labels, or instructions. Perfect for tutorials and feedback.
The mosaic tool lets you easily pixelate sensitive information, protecting privacy by obscuring faces, names, or numbers.
Image Annotator is most useful when it sits inside a small repeatable workflow: prepare the source, make the change, then check the output before sharing it.
Use Image Annotator for this job: A free, browser-based tool to annotate images. Draw shapes, add text, use a pen, and apply mosaic/blur effects to highlight or redact information. No uploads required. It keeps the task in the browser without moving the work into a heavier desktop app.
Preview the result, compare it with the original, and repeat the settings until the file is ready for a real project.
For adjacent tasks, stay inside the image tools collection instead of opening another service.
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Yes, our online image annotator is completely free to use with no limitations or watermarks.
Absolutely. All annotation and processing happens directly in your web browser. Your images are never uploaded to our servers, ensuring 100% privacy and security.
The Mosaic tool allows you to pixelate a selected area of your image. It's perfect for redacting sensitive information like faces, license plates, names, or addresses before sharing an image online.
Yes, you can use the 'Undo' and 'Redo' buttons in the toolbar to easily step back and forth through your changes.