Image Filters
Adjust brightness, contrast, saturation and more live.
How to use
- 1 Drop an image onto the box, or click to choose a file.
- 2 Drag the brightness, contrast, saturation and sepia sliders.
- 3 Toggle Invert colours for a negative effect if you want it.
- 4 Use Reset filters to start over at any time.
- 5 Click Download PNG to save the edited image.
About Image Filters
Image Filters gives you a small darkroom in the browser: drag a handful of sliders to retouch a picture and watch the result change in real time, then download it.
Drop in a JPEG, PNG, WebP or GIF and every adjustment is computed pixel by pixel with the Canvas API on your own device, so the photo is never uploaded.
You get the essentials that cover most quick edits.
Brightness lifts or drops the overall exposure; contrast pivots tones around mid-gray to make a flat shot pop or to soften a harsh one; saturation runs from a full grayscale at one end to a vivid, punchy boost at the other; a sepia slider warms the image toward a vintage tone by any amount you like; and a single toggle inverts the colours for a negative effect.
The filters are applied in a fixed, predictable order, and crucially the tool always re-renders from the pristine original every time a slider moves — so the edits never compound, smear or degrade no matter how much you fiddle.
A reset button returns every slider to neutral instantly, and because the maths behind each filter is a plain, deterministic pixel transform, the same input always gives the same output.
With no server round-trip the tool is safe for private and client images and works offline once loaded.
When you are happy, download a lossless PNG of the edited picture.
FAQ
Is my image uploaded to apply the filters?
No. Each filter is a pixel transform run with the Canvas API inside your browser, so the picture never leaves your device.
Do the filters degrade the image if I keep adjusting?
No. Every slider move re-renders from the untouched original and re-applies the full stack once, so the edits never compound or lose quality.
What does the saturation slider do at its lowest setting?
At minus one hundred it fully desaturates the image to a luminance-weighted grayscale; at zero it leaves colour unchanged; positive values boost it.