Relight AI is an online AI tool focused on photo lighting editing, with its official website at https://relightai.co/。它运行在一个专门训练的重打光模型上，用户无需滑块或设计技能，只需用简单提示词描述想要的光线效果，即可在数秒内完成照片光线转换。
Main capabilities
- Two working modes: Quick mode provides ready-made lighting presets that can be used immediately upon selection; Prompt mode allows you to enter a text description, and the AI adjusts the lighting according to the description.
- Portrait relighting: Use prompts to fix harsh shadows, flat lighting, or dim portraits and generate cleaner, more flattering portrait lighting.
- E-commerce product image lighting: Create clean, consistent product photos for catalogs, marketplaces, and ads, and use a single prompt to apply studio light, soft shadows, or warmer lifestyle lighting.
- Batch relighting: Upload multiple photos at once, write one prompt, and apply the same lighting style to the entire batch, suitable for product image sets, real estate shoots, and large image libraries.
- Correct photo lighting online: Fix underexposed photos, flat lighting, harsh shadows, and uneven exposure.
How to use
- Upload an image: Click the "Upload" button and select an image in PNG, JPEG, or WEBP format, with a maximum file size of 5MB.
- Enter a prompt: In the "Background Prompt" field, enter a detailed description of the desired background, clearly stating the elements and lighting effects you want to achieve to help the AI generate the best results.
- Click "Relight": The AI model will change the photo background, and the process usually takes 10–15 seconds.
Use cases
- Fixing undesirable lighting in portrait photography, such as harsh shadows, flat light, or dimly lit portraits.
- E-commerce product images that need a unified, clean studio lighting effect, or batch processing product image sets.
- Real estate shoots and large photo libraries that need a consistent lighting style.
- Everyday image editing that requires quick correction of photo brightness, exposure, and shadows.
Prompt suggestions The official recommendation is to describe the light direction, mood, color, and intensity, for example, "warm golden hour light", "soft studio lighting from the left", "dramatic side light with gentle shadows". Clear photos with a visible subject work better; portraits, product images, and lifestyle images are more effective when the subject is sharp and easy to recognize.
Limitations and notes
- Supports common image formats such as JPG, PNG, and WEBP; uploading clear, high-resolution images can yield better results.
- Can be used without registration, supports unlimited free generations, and runs directly in the browser; full access requires an account.
- Provides a free quota, and you can also subscribe to unlock more features and get extra quota; free use may have limitations.
- The official website mentions that a desktop app is available.
- PeakProcessing speed may fluctuate during peak periods.
- Photos are processed securely and are not retained permanently; the platform deletes uploaded and generated images after a limited time in accordance with its periodic deletion policy.
- Compared with Clipdrop Relight, the official website states that Relight AI is faster, browser-based, requires no registration or installation, and offers flexible prompt control.
- Specific details such as the above prices, subscriptions, and quotas are subject to the actual pages on the official website; the current materials do not provide more precise pricing figures.
