Blur Image

1What is Blur Image?

Apply smooth gaussian blur with adjustable strength.

Blur Image is part of the Pixly suite of professional image tools. It runs entirely in your browser with no software to install, requires no design experience, and delivers results in seconds — whether you are processing one image or an entire batch. Every operation is applied on the full-quality decoded image, so the output preserves the fidelity of your original file.

2How does Blur Image work?

The blur engine applies a true Gaussian convolution with the radius you set, computed as two passes of a fast box blur approximating the Gaussian curve — the standard technique that produces smooth, natural bokeh-style softness in a fraction of the time of direct convolution. Edges are sampled with mirrored padding so borders do not darken or streak.

The radius maps to the standard deviation of the Gaussian: small values (2–4) soften noise and skin texture, while large values (15+) fully obscure content — useful for backgrounds and anonymization.

3How to use Blur Image — step by step

Using Blur Image takes less than a minute from upload to download. The tool card at the top of this page is the live editor — everything below explains exactly what happens behind the scenes.

1. Step 1. Upload an image.
2. Step 2. Drag the blur strength slider.
3. Step 3. Download the blurred image.

4Key features at a glance

• Adjustable blur strength
• Live preview

Each feature is designed to solve a specific, real-world problem — from page-speed optimization for developers to platform-perfect sizes for social media managers. Together they make Blur Image a dependable part of any image workflow.

5Pro tips for the best results

A few professional habits will get noticeably better output from Blur Image:

• Radius 3–6 creates the popular “soft background” look behind text overlays.
• To hide information completely, use radius 20+ — small blurs can sometimes be reversed.

6Who uses Blur Image?

Web developers rely on it to keep pages fast — properly prepared images are the single biggest performance win most sites can make. Designers use it for the last mile of production work: format handoffs, corner rounding, frames and exports that match the platform they are shipping to.

E-commerce teams process entire product catalogs to consistent sizes and weights, which measurably improves load speed and conversion. Content creators and social media managers depend on it for daily platform-ready assets, while students and office teams use it to shrink scans and photos so they fit comfortably inside emails, forms and presentations.

7Supported image formats

Blur Image works with all widely used image formats. Each format has strengths that make it the right choice for a particular job:

8Privacy & security

Your images stay yours. Files are transferred over an encrypted connection, processed on secure servers, and automatically deleted within 24 hours — nothing is shared with third parties and nothing is used for training or advertising. Because Pixly works in the browser, you can also process images from any device without installing software or creating an account.

9Frequently asked questions