Replace the Sky in a Photo
Replace the sky in any photo with snapnedit's free AI sky replacement tool. Swap a flat, overcast, or blown-out sky for a clear blue sky, dramatic clouds, a golden-hour sunset, or a starry night — the AI detects the horizon and edges automatically, then blends the new sky so it matches your photo's light. Runs in your browser, no sign-up, no watermark.
Drop a PNG, JPEG, or WebP here, or click to choose a file.
Turn a gray sky into the shot you wanted
Weather rarely cooperates on the day you shoot. A landscape loses its drama under a white, featureless sky; a portrait looks flat when the golden light you hoped for never showed. Replace-sky fixes the sky without a reshoot. Upload the photo, pick a replacement from clear blue, scattered clouds, dramatic overcast, sunset, and night presets, and snapnedit swaps the sky in place. The AI finds the boundary between sky and everything else — buildings, trees, mountains, the horizon line — so the new sky sits behind your subject instead of pasting over it. It is the fast way to rescue an image that was one weather system away from perfect.
Edge detection that respects trees, rooftops, and horizons
A believable sky swap lives or dies on the mask. Cut too tight and you slice off branches; cut too loose and a halo of old sky ghosts around every rooftop. Snapnedit's model segments the sky as its own layer and traces the ragged edges — bare tree limbs, antennas, power lines, the fine gaps between leaves — rather than drawing one blunt line across the frame. Wispy, semi-transparent edges get feathered so the transition reads as depth, not a cut-out. Because the replacement is composited behind that mask, foreground detail stays sharp while only the sky region changes, which is what keeps the result from looking like a sticker.
Built for real estate, landscapes, and travel photos
Property listings are the classic case: a bright blue sky with soft clouds makes a house look like it was shot on the best day of summer, and agents swap gray skies routinely for exactly that reason. A restrained clouded blue usually sells better than a cinematic thunderhead, so snapnedit keeps natural-looking presets front and center. Landscape and travel shooters use it to salvage a hazy afternoon or add sunset warmth to a midday frame. One tip that separates convincing edits from obvious ones: match the light direction. If shadows fall hard to the right, pick a sky whose brightest area sits on the left, so the implied sun agrees with the shadows already in your photo.
Free sky swaps, processed privately
Snapnedit's sky replacement is free with no account and no trial cap — the whole editor is free to use, and credits only ever apply to API access, never to editing in the browser. Your photo is processed for the edit and never sold, republished, or used to train anything you did not opt into; the self-hosted AI means the image is not shipped off to a third-party service you have never heard of. Exports come out clean at full resolution as PNG or JPG with no watermark stamped across the sky you just perfected. Nothing to install, nothing to sign up for — open the tool, swap the sky, download.
How it works
Upload the photo whose sky you want to change — any image with a visible sky works.
Pick a replacement sky from the presets (clear blue, clouds, sunset, or night) or add your own, and let the AI detect the sky and swap it in.
Download the finished image as a watermark-free PNG or JPG at full resolution.
Frequently asked questions
How does snapnedit know where the sky is?
An AI segmentation model separates the sky region from the foreground automatically. It traces the horizon and the fine edges of buildings, trees, and other objects, so you do not draw a mask by hand — upload the photo and the sky area is detected in seconds.
Can I use my own sky image instead of a preset?
Yes. Alongside the built-in presets — clear blue, scattered clouds, dramatic clouds, sunset, and night — you can supply your own sky photo, and snapnedit composites it behind the detected foreground so it fills the same region.
Will the new sky match the lighting in my photo?
The tool blends the replacement into the surrounding image so it picks up the scene's overall tone rather than looking pasted on. For the most convincing result, choose a sky whose brightest area matches your photo's shadow direction — if shadows point right, pick a sky lit from the left.
Does it handle trees and complex edges without a halo?
It is built to. The sky is masked as its own layer with feathered, semi-transparent edges along branches, rooftops, and antennas, which avoids the ring of old sky that a hard cut-out leaves behind. Very fine detail against a bright old sky is the hardest case, so review the edges before exporting.
Is replace-sky really free?
Yes. The entire snapnedit editor is free with no sign-up and no watermark. Credits only apply to API usage — using the tools in your browser costs nothing and places no limit on how many photos you edit.
Is my photo uploaded to a third-party service?
No. Snapnedit runs its own self-hosted AI, so your image is processed for the edit and is not handed to an outside provider or used to train models you did not opt into.
What formats can I download?
You can export the finished image as a PNG or a JPG at full resolution, with no watermark added to the result.
Does it work on my phone?
Yes. Replace-sky runs in the browser, so it works on desktop and mobile without any app to install — open the page, upload, swap, and download.
What kind of photos work best?
Any photo with a clearly visible sky — exteriors of homes, landscapes, cityscapes, and travel shots. Scenes with a clean horizon replace most cleanly; heavily backlit subjects or intricate silhouettes against a blown-out sky are the trickiest and may need a quick edge check.