🎨 CSS Filter Generator - Create CSS filter effects

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{{ getFilterUnit(filter.type) }}
No filters active. Click"Add Filter" to get started.
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px
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CSS Filters
Filter Preview
Filter Preview
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{{ result.css }}
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Active Filters: {{ result.filterCount }}
CSS Length: {{ result.css ? result.css.length : 0 }} characters
Has Drop Shadow: {{ result.hasDropShadow ?'Yes' :'No' }}
Performance: {{ getPerformanceInfo() }}
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{{ example.title }}

{{ example.code }}
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⚠️ {{ error }}

ℹ️ About CSS Filter Generator

CSS filters apply graphical effects to an element as part of rendering, so you can preview blur, color correction, opacity, inversion, sepia tones, and shaped shadows without editing the source image or markup. The generated value targets the CSS filter property defined by the W3C Filter Effects Module Level 1 and documented in the MDN filter reference.

Common filter functions:

  • blur(): Applies a Gaussian blur, usually with a length such as blur(4px)
  • brightness() and contrast(): Tune exposure and contrast with percentages or numbers
  • drop-shadow(): Adds an alpha-aware shadow, useful for transparent PNGs, SVGs, icons, and cutout images
  • grayscale(), invert(), sepia(), and saturate(): Remap colors for previews, disabled states, and theme experiments
  • hue-rotate(): Rotates colors around the hue circle with an angle such as hue-rotate(180deg)
  • opacity(): Changes the rendered transparency inside the filter chain

Example output: 

filter: brightness(110%) contrast(125%) saturate(140%) drop-shadow(0 8px 18px rgba(0, 0, 0, 0.35));

Filter order matters: the browser applies functions from left to right, so contrast(140%) brightness(80%) can look different from brightness(80%) contrast(140%). Use filter: none; to remove all filter effects.

Practical use cases:

  • Image treatments: Adjust thumbnails, avatars, product shots, and hero images without exporting new assets
  • Interactive states: Add hover, focus, disabled, loading, or selected states with brightness, grayscale, or opacity
  • Theme experiments: Test quick color shifts with invert, sepia, saturate, and hue-rotate before changing source artwork
  • Icon and logo shadows: Use drop-shadow when the shadow should follow transparent pixels instead of the element box
  • Reusable CSS snippets: Copy a finished filter chain into classes, component styles, or animation keyframes

Filter vs box-shadow:

  • drop-shadow() follows the rendered alpha channel, including transparent areas in images and SVGs
  • box-shadow follows the rectangular box model and supports spread and inset shadows
  • drop-shadow() does not support the inset keyword or a spread radius

Limitations: Large blurs, multiple shadows, and animated filter chains can be expensive on low-power devices, so test the final CSS on the real target viewport. Filters affect the element's rendered output and its contents; use backdrop-filter when you need to blur or color-shift what appears behind a translucent element. Also verify text contrast after applying filters, because visual effects can make labels or image overlays harder to read.

API Usage Example:

POST /api/tools/webdev/css-filter-generator
Content-Type: application/json

{
    "filters": [
        {
            "type": "brightness",
            "value": 120
        },
        {
            "type": "contrast",
            "value": 110
        },
        {
            "type": "drop-shadow",
            "offsetX": 2,
            "offsetY": 2,
            "blurRadius": 4,
            "color": "#000000"
        }
    ],
    "previewSettings": {
        "width": 200,
        "height": 150,
        "backgroundColor": "#ffffff",
        "borderColor": "#e5e7eb",
        "borderWidth": 2,
        "containerBackground": "#f9fafb",
        "previewType": "box"
    }
}
Ready