Free AI Sky Replacement | No Sign-Up

Swap the sky in any photo for a blue sky, golden sunset, storm, starry night, or northern lights. The AI relights the whole scene so the new sky actually fits. No sign-up, no watermark.

  • No account
  • No ads
  • No watermark
Examples · tap to try

Drop a photo, pick a sky, and press Replace Sky. The AI swaps everything above the horizon and relights the scene so color temperature and shadows match the new sky.

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01 · Image Editing

Edit Images at Full Resolution

Change anything with a text prompt and get the result back at your photo's full size.

Before
Skater girl before and after editing before enhancement and upscaling
After
Skater girl before and after editing after enhancement and upscaling
02 · Image Upscaling

Upscale Images to 100 MP

Add real detail as you enlarge.

Before
Japanese supermarket enhanced, demonstrating the AI art upscaler before enhancement and upscaling
After
Japanese supermarket enhanced, demonstrating the AI art upscaler after enhancement and upscaling
03 · Image Generation

Generate Images in 4K

Turn a prompt or a reference image into anything from photoreal shots to illustration.

04 · Video Generation

Generate Videos in Full HD

Create clips from a prompt or bring a still image to life.

05 · Video Upscaling

Upscale Videos to 4K

Sharpen edges, textures, and on-screen text frame by frame, with stable motion.

How the AI sky replacement works

A convincing sky swap is mostly a lighting job. Older sky replacement tools mask the sky and drop a new one behind the horizon line; the ground keeps its old light, and the composite gives itself away. This page runs Qwen Image Edit, an image editing model that replaces the sky and then relights the entire scene: swap in a golden sunset and warm light spills onto buildings and faces, shadows soften and stretch, and reflections pick up the new colors.

Five skies are available as one-click options: a clear blue sky with soft clouds, a golden sunset, a dramatic storm sky, a starry night sky, and northern lights. Everything below the horizon keeps its content and composition; only the light on it changes.

When to replace the sky, and when to just relight

A blown-out white sky ruining an otherwise good photo is the classic case for this tool, along with real estate exteriors shot on gray days and travel photos that missed golden hour. If the sky in your photo is fine and it is the light on the subject you want to change, use the free AI photo lighting editor instead; it changes the lighting without touching the sky. For edits beyond either preset, describe what you want in the free AI image editor, which runs the same model with freeform instructions.

What to expect

Photos with a visible horizon or open sky give the cleanest swaps: landscapes, cityscapes, house exteriors, beach and travel shots. Complex boundaries like bare tree branches against the sky are handled well because the model redraws rather than masks, though very fine detail may simplify slightly. The swapped photo comes back at about one megapixel; for prints or listing photos at full size, bring it back up with the free AI image upscaler. Your upload exists only while the swap renders, then expires automatically.

Frequently Asked Questions

Upload the photo above, pick one of five skies, and press Replace Sky. The AI swaps the sky and relights the scene to match, then shows a before/after slider. No sign-up, no watermark.

A clear blue sky with soft clouds, a golden sunset, a dramatic storm sky, a starry night sky, and northern lights. For a specific sky beyond these, describe it in the free AI image editor.

Yes, because the scene is relit to match. A sunset sky warms the ground, buildings, and faces; a night sky darkens them. That relighting is what separates this from tools that paste a sky behind the horizon and leave daylight on everything else.

The content and composition below the horizon stay unchanged; only the lighting on it adapts to the new sky. Buildings, people, and terrain remain exactly where and what they were.

Yes, replacing a gray sky with a blue one is standard practice for listing exteriors. Where your market requires disclosure of edited photos, disclose it.

Not fully; the edit re-renders at about one megapixel. To get back to print size, run the result through the free AI image upscaler.

Yes. Sky swaps run on shared free GPUs, so each visitor gets a daily allowance of them; connecting a free Hugging Face account raises it. No sign-up, and no watermark on the result.

No. A photo is on the GPU just long enough to render the new sky, never lands in a gallery, and is not used for training. The transient files expire on their own.

No. Your download is the clean, full-quality result with no watermark, and you never need an account or email to get it.

Yes. The tools run open models, and none of their licenses claims any rights over the output you generate, so the model puts no claim on what you make, in commercial work or anywhere else. What the model does not decide is your right to the material you feed it: anything you upload stays subject to whoever holds the rights in it, and the usual limits apply either way. Do not use the tools to create illegal content, to impersonate real people, or to infringe someone else's rights.

No. Uploads and prompts are screened by an automated safety filter before anything runs, and sexually explicit content and anything involving minors are blocked and cannot be unlocked on any plan. Our Terms of Service list the full set of prohibited content.