Darken or lighten the edges of a photo so the eye goes to the middle. Control size, softness, colour and shape, then download without uploading anything.
Blends every pixel toward a chosen colour depending on how far it is from the centre. Inside the clear zone nothing changes; beyond it the blend ramps up smoothly to the intensity you set at the corners. The shape decides how distance is measured: an oval that follows the frame, a true circle, or a straight-sided rectangle. Nothing is blurred and the dimensions do not change, so a vignetted photo prints and crops exactly like the original.
A 4000 × 3000 portrait shot against a busy street: intensity 55, size 55, softness 50 with a black oval darkens the clutter at the edges by about half while the face stays untouched, and the JPEG comes out within a few percent of the original size. Switching the colour to white with intensity 40 and size 70 gives the faded, light-leak look popular for wedding albums. Intensity 100, size 30, softness 25 turns the same photo into a spotlight with near-black corners.
Use it to pull attention to a centred subject, to tame bright corners in a landscape, to give product shots a studio feel, or to finish a black-and-white conversion from Grayscale Image. Skip it when the subject is off-centre, because the darkening will fall on them, and avoid strong vignettes on images that will be cropped later since the fade will end up lopsided. For an old-photo look, run Sepia Effect first, then add a brown vignette here.
Intensity is how far the corners move toward the vignette colour, 100 being fully that colour. Size is how much of the frame stays clear; 100 disables the effect. Softness is the width of the fade; near 0 gives a hard edge like a photo mat. Oval darkens all four sides evenly on any aspect ratio, Round measures true distance so wide photos get darker sides, Rectangle fades in straight bands from each edge. Vignette colour is usually black or white; brown and navy suit vintage and cinematic grades.
Does the vignette change the file size or dimensions? Dimensions never change. JPEG size usually drops a little because darker, smoother corners compress better.
Why does the dark area look uneven on a panorama? You are using the Round shape, which measures a true circle. Switch to Oval and the fade follows the frame so all four sides match.
Can I put the clear area off-centre? Not in this tool; the centre is fixed. Crop the photo first with Crop Image so the subject sits in the middle, or crop after vignetting if you can accept an uneven fade.
Is a white vignette the same as a light leak? Close. A white vignette at low intensity and high softness gives the faded-edge look; a real light leak is usually one-sided, which you can approximate by cropping the result off-centre.