2Pick your effects — grayscale, sepia, invert, blur, sharpen, brightness, contrast and saturation — and set the strength of each.
3Apply them all in a single pass rather than running the tool repeatedly, which is what accumulates visible damage.
4Download the filtered GIF file, and keep your original: it is the only undo you have.
GIF Filters FAQ
How does GIF Filters apply an effect?
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Concretely, the filter is applied to every frame with a single shared palette derived afterwards, which keeps colours stable across the animation instead of shifting frame to frame. You pick the effect and its strength and the transform is applied to the whole file at once.
Which effects are available?
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Grayscale, sepia, invert, blur, sharpen, and brightness, contrast and saturation adjustment. They can be combined, and combining them in one pass is better than running the tool repeatedly.
Does the source format change how a filter looks?
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It can. GIF is capped at a 256-colour palette with single-bit (on/off) transparency and no partial alpha, which is why photographs band and dither in it. Colour depth and the palette model in particular decide how smoothly a gradient or a blur can be represented.
Anything specific to GIF to keep in mind?
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Yes — the palette is shared across the whole animation, so any change to one frame is negotiated against the colours every other frame needs. That is often the difference between an effect looking clean and looking banded.
Can I undo a filter after downloading?
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No — the effect is baked into the output pixels, which is the point of applying it. Keep the original file; that is your undo. Grayscale and blur in particular discard information that genuinely cannot be recovered.
Can I apply the same look to a whole set?
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Yes. One filter configuration is applied across the batch, which is how you get a visually consistent gallery rather than a set of individually-tweaked images that almost match.
What can I upload to GIF Filters?
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Animated and static GIFs, plus animated WebP. Still images work too and are treated as a single-frame animation, which is occasionally what you want when building one.
Is there a file size limit on GIF Filters?
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Yes: free accounts process images up to 25 MB each, which is a real constraint for animation — a few seconds of full-frame GIF reaches that quickly. If an animation is over the limit, cutting the frame rate is almost always a better first move than cutting the dimensions — the eye forgives 12 fps far more readily than it forgives a smaller picture.
Will GIF Filters lower the quality of my GIF animations?
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The binding constraint on a GIF is not the operation, it is the 256-colour palette. Anything that changes pixel values forces a re-quantisation against a palette shared by every frame, which is where banding and dithering come from. Frame timing and loop count are preserved.
Can I run GIF Filters on several GIF animations at once?
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Yes, and it is worth doing — per-file overhead on an animation is dominated by decoding every frame, so a batch amortises far better than the equivalent set of single runs.
Is animation preserved, or do I get a still?
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Animation is preserved. Every frame is decoded, processed and re-assembled with the original delays and loop count intact. You only get a still if you explicitly ask for a single frame.
Does GIF Filters cost anything?
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No. GIF Filters is free, needs no account, and adds no watermark to the output. Uploaded animations are deleted from the workers a short time after the job completes.
