Pixelate Image

What is Image Pixelation?

Image pixelation is the process of replacing a group of pixels with a single, averaged color to create a blocky, mosaic-like effect. The "block size" determines how large each pixel block is — a larger block size creates a more pronounced pixelation effect, while a smaller block size keeps more of the original detail.

How to Use the Pixelate Image Tool?

Full Image Mode

• Upload your image by dragging it into the box or clicking to browse files.
• Adjust the Block Size using the input box or slider (1–100 pixels).
• Click the Pixelate button to apply the effect to the entire image.
• Download your pixelated image instantly.

Partial Mode (Select Region)

• Switch to the Partial (Select Region) tab.
• Upload your image and click and drag on the preview to draw a rectangle around the area you want to pixelate.
• Adjust the Block Size as needed.
• Click Pixelate — only the selected region will be pixelated, the rest of the image stays unchanged.
• Download the final image.

Common Use Cases

• Privacy & Censorship: Pixelate faces, license plates, or sensitive text in screenshots before sharing publicly.
• Social Media: Hide personal details in photos before posting on social platforms.
• Pixel Art Effect: Create retro, video-game-style pixel art from any photo.
• Placeholder Images: Generate low-fidelity pixelated previews for lazy-loading on websites.
• Design & Art: Apply mosaic effects for creative design, presentations, or thumbnails.

Why Use Our Free Online Image Pixelator

• Instant Pixelation: Pixelate any image in seconds with adjustable block size.
• Full & Partial Modes: Pixelate the entire image or just a selected region.
• Supports All Formats: Works with JPG, PNG, WEBP, GIF, BMP, TIFF, and more.
• Browser-Based: Everything runs in your browser — images are never uploaded to any server.
• Free Forever: 100% free with no hidden charges or watermarks.

Frequently Asked Questions (FAQs)

How do I pixelate an image online?

Simply upload your image, adjust the block size using the slider, and click "Pixelate". The tool will instantly apply the pixelation effect to your image, which you can then download.

Can I pixelate only a specific part of an image?

Yes! Switch to "Partial (Select Region)" mode, then click and drag on the preview image to select the rectangular area you want to pixelate. Only the selected region will be pixelated while the rest remains unchanged.

What does the block size control do?

The block size determines how large each pixel block is in the output. A small block size (2–5px) gives a subtle, barely-noticeable pixelation, while a large block size (20–50px) creates a dramatic mosaic effect where individual details are completely obscured.

What image formats are supported?

The tool supports all common image formats including JPG, PNG, WEBP, GIF, BMP, and TIFF. Any image format that your browser can display will work with this tool.

Are my images safe?

Yes, all image processing happens entirely in your browser using the HTML5 Canvas API. Your images are never uploaded to any server. The processing is 100% client-side, ensuring your photos remain private.

Can I use this tool on mobile?

Yes, the pixelate image tool works on all devices including phones and tablets. You can upload, pixelate, and download images directly from your mobile browser. The partial selection feature also supports touch gestures.