Drop a file here
About Image Blur Tool — Free Online Tool
Image Blur applies a Gaussian blur across a picture at a radius you choose, from a slight softening up to an unrecognisable smear.
This is a real separable Gaussian convolution over the pixel data — a horizontal pass then a vertical one, with sigma set to half the radius you pick — and the result is baked into the file, not a CSS filter that only looks blurred on screen. The limitation that matters: the blur covers the entire image. There is no brush and no region selection, so it cannot blur one face in a group photo; for hiding part of a picture, crop to the part first.
The convolution runs on your own hardware and the image is not uploaded.
Making a soft background plate for a title card, obscuring a whole screenshot being used as an illustration, softening a texture that will sit behind text, and producing a blurred placeholder to show while the full image loads.
Also known as: blur photo · censor picture · gaussian blur
When to use it
Good for soft background plates behind a title, low-detail placeholders to show while a full image loads, and taking the sharpness out of a texture that has to sit under text.
How it works
Sigma is derived from the radius you choose, then a one-dimensional kernel runs along one axis and the result along the other. Alpha is blurred with the colour channels, and pixels at the border are clamped to their nearest neighbour.
It Covers The Whole Frame
There is no brush and no rectangular mask here — every pixel in the picture gets the same treatment, so one face in a group photo cannot be singled out. To obscure a single detail, crop the picture down to that detail first and blur the crop.
How to Use Image Blur Tool in 4 Easy Steps
Follow this simple guide to process your files in seconds directly inside your browser tab.
Select or Drop Your JPG/JPEG/PNG
Drag and drop your JPG/JPEG/PNG directly into the Image Blur Tool workspace above or click 'Choose files'. You can process up to 1 file in a single run.
Configure Your Preferences
Adjust the available optimization sliders, target formats, or custom options. Good for soft background plates behind a title, low-detail placeholders to show while a full image loads, and taking the sharpness out of a texture that has to sit under text.
Instant In-Browser Execution
The client-side engine executes Image Blur Tool locally on your device hardware with zero server latency and 100% private in-memory sandboxing.
Preview & Download JPG
Inspect the processed file, compare file size savings or output quality, and click Download to save the finished JPG file directly to your disk.
Why Use Image Blur Tool on ShortTrick
Engineered for maximum speed, strict privacy, and frictionless digital productivity.
100% Private & Local
Files processed with Image Blur Tool never leave your computer or phone. Zero cloud uploads, zero tracking, and zero risk.
Blazing Fast Engine
Powered by compiled WebAssembly code running directly in your browser with sub-second execution for Image Blur Tool.
No Paywall or Account Required
Image Blur Tool is completely free with no hidden charges, watermarks, email signups, or artificial daily limits.
High-Fidelity Quality
Advanced algorithms preserve crisp vector text, clear colors, and structural layout integrity.
Generous 50 MB Size Limit
Handle files up to 50 MB and process up to 1 files in convenient batches with Image Blur Tool.
Cross-Device Compatibility
Runs seamlessly in modern browsers on Windows, macOS, Linux, iOS (iPhone/iPad), and Android.
Supported Formats & Limits
Designed for high performance with browser-side memory guarantees.
50 MB
1
Frequently Asked Questions About Image Blur Tool
Common questions regarding Image Blur Tool, data privacy, file format compatibility, and usage limits.
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