Are PixelTools free to use?

Yes, all 18 image tools on PixelTools are completely free with no limits, no account required, and no hidden fees.

Do my images get uploaded to a server?

Never. All processing happens locally in your browser using the Canvas API. Your files never leave your device.

What image formats are supported?

Most tools accept JPG, PNG, WEBP, and GIF. Output formats depend on the specific tool.

Is there a maximum file size?

No hard limit. Very large files (20MB+) may take a few seconds on older devices but will process correctly.

PixelTools

Browse Tools

Image Quality Checker

Analyze image resolution, file size, dimensions, and get optimization recommendations instantly.

Processed locally in your browser

Your files are not uploaded

Free and private

Drag & drop your image here

or click to browse

Supports PNG, JPG, WEBP, GIF

Image Quality Checker — Analyze & Optimize

Before publishing images on your website, ecommerce store, or social media, it's important to check that they meet quality and performance standards. Our image quality checker analyzes key metrics including file size, pixel dimensions, megapixels, aspect ratio, and provides actionable optimization recommendations.

Web performance experts recommend keeping image file sizes under 200KB for most use cases. Large images are one of the most common causes of slow page load times, which negatively impacts both user experience and Google search rankings. Use this tool to identify oversized images, then use our Image Compressor or Resizer to optimize them.

How to Use Image Quality Checker

1
Upload your image.
2
The tool analyzes resolution, file size, dimensions, and quality.
3
Review the quality score and recommendations.
4
Use our other tools to optimize based on the suggestions.

Frequently Asked Questions

What does the quality score mean?

The score (0–100) reflects how well-optimized the image is for web use, based on file size, resolution, and format. A score above 80 is excellent.

What is a good image resolution for websites?

For full-width hero images, 1920×1080px is standard. For product images, 800×800px to 1200×1200px is typical. Larger is not always better — file size matters more.

What is megapixels?

Megapixels = width × height ÷ 1,000,000. A 1920×1080 image is about 2.1 megapixels. Higher megapixels means more detail but also larger file sizes.