What CSS Filter Generator does
The CSS filter property applies image-editing effects to any element — not just images — directly in the browser, with no exported assets to keep in sync. Stack blur, brightness, contrast, saturation, grayscale, sepia, hue rotation and inversion here and see the combined result immediately. The same controls can emit backdrop-filter instead, which leaves the element itself untouched and processes whatever is rendered behind it; that is the property behind every frosted-glass panel and translucent navigation bar you have seen.
How to get your result
- 1
Adjust the sliders for the effects you want — anything left at its default value is omitted from the output.
- 2
Watch the live preview, which uses a gradient and shapes so colour and edge effects are both visible.
- 3
Tick the backdrop option if you want to filter what is behind the element rather than the element itself.
- 4
Copy the generated rule, keeping the function order as shown since order changes the result.
Order is part of the value
Filter functions form a pipeline: each one receives the output of the one before it, so the same set of functions in a different order produces a different image. grayscale(100%) saturate(200%) is grey, because saturation is being boosted on an image that no longer has any colour to boost. Reverse them and saturate(200%) grayscale(100%) is also grey, but a different grey, because the more saturated colours convert to different luminance values before the colour is stripped. The rule generalises: put destructive operations such as grayscale and full contrast changes last, and put adjustments you want to survive earlier in the chain. Blur is worth positioning deliberately too, since blurring before a contrast boost softens edges and then hardens them again, while the reverse order preserves the sharpness the contrast created. There is no way to express branching or grouping in a filter list, so when you need two effects applied to different parts of an element, nest an extra element and filter each separately.
The performance and containment characteristics
Filters are GPU-accelerated in every current browser and are cheap as static styling, but two behaviours are worth knowing before reaching for them in animation. First, animating blur is genuinely expensive because the blur radius changes every frame and the browser must re-rasterise the element each time; animating opacity or transform instead is dramatically cheaper, and cross-fading between a pre-blurred copy and a sharp one is the usual workaround when a blur transition is required. Second, applying any filter other than none creates a containing block for descendants with position: fixed, which means a fixed-position child inside a filtered ancestor will unexpectedly position itself relative to that ancestor rather than the viewport. This catches people out with modals and sticky headers inside a filtered wrapper, and the fix is to move the filtered element so it is not an ancestor of the fixed one. backdrop-filter carries an additional cost, since the browser must sample and process the rendered content behind the element on every frame it changes.
What people use it for
Greyscale images that colour on hover
A grayscale filter with a transition to none is a two-line effect that would otherwise need two copies of every image.
Frosted-glass panels
backdrop-filter with a blur and a semi-transparent background produces the translucent panel style used across modern operating systems.
Dimming a background behind a modal
A brightness filter on the page behind a dialog darkens it without laying an extra overlay element over the whole document.
Theming a single-colour icon set
hue-rotate shifts a whole icon set to a different brand colour without re-exporting any of the assets.
Tips
- Put grayscale and heavy contrast last in the chain, since they discard information the earlier functions produced.
- Avoid animating blur; transition opacity or transform instead, and pre-blur a duplicate element if you need a blur cross-fade.
- backdrop-filter only shows through a partially transparent background — a fully opaque element hides everything it would otherwise filter.