# High Pass Filter Apply high pass filter to enhance details and edges with adjustable frequency and strength > Canonical page: https://elysiatools.com/en/tools/image-high-pass - **Category:** Design - **Keywords:** image, high-pass, filter, frequency, details, edges, sharpen, enhance ## Overview The High Pass Filter tool allows you to enhance image details and sharpen edges by isolating high-frequency information. By adjusting the radius and strength, you can precisely control how much texture is emphasized, making it an essential utility for professional photo editing and graphic design workflows. ## Inputs - **Image File** (file): Upload any image file (JPEG, PNG, WebP, GIF, BMP, TIFF) to enhance details and edges - **Filter Radius** (range): Radius of the Gaussian blur used for high-pass filtering. Higher values affect larger details - **Filter Strength** (range): Strength of high-pass effect. Higher values enhance details more aggressively - **Blend Mode** (select): How the high-pass details blend with the original image - **Output Mode** (select): Choose between composite result or details-only output - **Output Format** (select): Choose output format or keep original. PNG recommended for maximum quality - **Quality (1-100)** (number): Output quality for lossy formats (JPEG, WebP). Higher = better quality but larger file size ## When to use - When you need to sharpen soft or blurry images to bring out fine textures. - When you want to isolate edge details for creative compositing or masking. - When preparing images for print or web display where extra clarity is required. ## How it works - Upload your image file (JPEG, PNG, WebP, etc.) to the tool. - Adjust the Filter Radius to define the size of the details you want to enhance. - Set the Filter Strength and select a Blend Mode to determine how the high-pass layer interacts with your original image. - Choose your output format and quality settings, then process the file to download your enhanced result. ## Use cases - Enhancing portrait photography to make skin textures and hair appear sharper. - Improving architectural photos to highlight structural edges and material details. - Creating high-contrast masks for advanced image editing and compositing. ## Frequently asked questions ### What does the Filter Radius control? The radius determines the size of the details affected. A smaller radius targets fine textures, while a larger radius affects broader edges. ### Which blend mode should I use? Overlay is the recommended default for most sharpening tasks, as it balances contrast and detail enhancement effectively. ### Can I extract only the high-frequency details? Yes, select 'Details Only' in the Output Mode to generate an image containing only the isolated high-pass data. ### What file formats are supported? You can upload JPEG, PNG, WebP, GIF, BMP, and TIFF files. You can also choose to export in JPEG, PNG, or WebP. ### Does this tool reduce image quality? The tool processes your image based on your chosen output format and quality settings. Using PNG format ensures maximum quality retention. ## Related tools - [Add Border to Image](https://elysiatools.com/en/tools/image-add-border): Add customizable borders to images with various styles, colors, and widths - [Add Frame to Image](https://elysiatools.com/en/tools/image-add-frame): Add decorative frames to images with various styles like classic, modern, vintage, and custom designs - [Add Glow Effect](https://elysiatools.com/en/tools/image-add-glow): Add beautiful glow effects to images with customizable color, intensity, size, and style variations - [Image Gradient Overlay](https://elysiatools.com/en/tools/image-add-gradient): Add gradient overlay effects to images with customizable colors, directions, and blend modes - [Add Noise Effect](https://elysiatools.com/en/tools/image-add-noise): Add various types of noise effects to images with customizable intensity and parameters - [Add Pattern Effect](https://elysiatools.com/en/tools/image-add-pattern): Add geometric pattern overlays to images with customizable colors, size, and rotation - [Add Reflection Effect](https://elysiatools.com/en/tools/image-add-reflection): Add water reflection effects to images with customizable height, blur, and transparency - [Add Shadow Effect](https://elysiatools.com/en/tools/image-add-shadow): Add realistic shadow effects to images with customizable direction, blur, color, and intensity ## Samples - [Web Image Processing Python Samples](https://elysiatools.com/en/samples/web-image-processing-python): Web Python image processing examples using PIL/Pillow including reading, saving, resizing, and format conversion - [Web Image Processing TypeScript Samples](https://elysiatools.com/en/samples/web-image-processing-typescript): Web TypeScript image processing examples including image read/save, scaling, and format conversion - [Android Image Processing Java Samples](https://elysiatools.com/en/samples/android-image-processing-java): Android Java image processing examples including reading/saving images, scaling, and format conversion - [Android Image Processing Kotlin Samples](https://elysiatools.com/en/samples/android-image-processing-kotlin): Android Kotlin image processing examples including reading/saving images, scaling, and format conversion ## Related content - [Image Edge Detection and Convolution Kernel Lab](https://elysiatools.com/en/hubs/image-edge-detection-and-convolution-kernels): Extract the luminance channel, suppress noise with a recorded radius, compare Sobel, Prewitt, Roberts, and Laplacian operators, tune thresholded edge detection, and reproduce the winning result as an explicit convolution kernel.