Used credits are non-refundable. Unused purchased credits can be refunded within 30 days of purchase by contacting support@sumi.gallery; refunds go back to the original payment method.
How many credits does each feature cost?
Standard image: 2, HD: 14, Edit/Tools: 6, AI Enhance: 1, Video: 55-255, Poster: 2 credits.
How to generate images?
Click "Create" in the nav bar, enter a text description, choose style and size, then click Generate.
What if image quality is poor?
Try: 1. More detailed prompts 2. Select "HD" or "Ultra HD" quality 3. Use AI prompt optimization.
How do I write better prompts?
Be as detailed as possible: subject + style + lighting + composition + color tone. Use the AI Enhance button (1 credit) to auto-improve your prompt.
What output sizes are supported?
Seven sizes: 1024x1024 / 1024x1536 / 1536x1024 / FHD / 2K / QHD / 4K. The editor has an aspect-ratio preview to help you choose.
How to edit images?
Click "Edit" or "Studio", upload an image, and choose an edit mode (17 available) including remove BG, change BG, style transfer, etc.
What is the Studio?
AI Style Studio: upload a photo, apply any of 16 styles in one click, compare previews, fine-tune, and download. Great for exploring looks.
How do I remove a background?
Go to the Editor, select 'Remove Background', and upload an image. Smart centering (auto-crop to subject) is supported. 6 credits per use.
What is 'De-AI'?
Makes AI-generated images look more human-crafted. Supports 8 categories: portrait, landscape, product, food, anime, architecture, document, and print.
How do I use inpainting?
In the Editor, select 'Inpaint', paint over the area to modify, enter a description, and apply. The red-highlighted region will be regenerated.
What is Virtual Try-On?
Upload a garment photo and AI generates a model wearing it. Choose female/male model and casual/formal style. 8 credits per use.
How to generate videos?
Click "Video", enter a description, choose duration (4-20s) and aspect ratio. Costs 55-255 credits.
Can I use a reference image for video?
Yes. Upload a reference image when generating a video. The system auto-crops it to the matching dimensions, and AI creates the video based on the image.
Upload 1 product photo and get 5 auto steps: AI analysis, background removal, 3 scene images, copy, and multi-platform sizing. Full e-commerce assets in one go.
How do I use poster templates?
E-commerce page, Poster tab: pick an image, choose layout (6 options) + color scheme (4 options), add text, and generate. Great for sales and promo posters.
What is Batch Overlay?
Select multiple images, add corner text (e.g. 'In Stock') plus a team logo watermark, then batch export. 9 positions and 3 font sizes available.
How to create a team?
Click "Teams" → Create Team → Invite members. Supports shared credit pool, approvals, and task boards.
How does the team credit pool work?
The team Owner enables pool mode, tops up the team balance, and members draw from it when generating. Per-member monthly caps prevent overspending.
What team roles are there?
Owner (full control) > Admin (manage) > Member (use) > Viewer (read-only). Viewers can browse but cannot perform actions.
How do I use the Copywriter?
Nav bar 'Copywriter': pick a category (real estate, e-commerce, brand, social, email, general), choose a template, enter details, and generate. 1 credit per use.
How to batch generate?
Use the "Batch" page, one prompt per line, up to 50,000. Or use the commerce "Batch Processing" feature.
How to change password?
Click avatar (top-right) → Settings → Security → Change Password. You can also enable 2FA.
How do I enable two-factor authentication?
Settings > Security > Enable 2FA. Scan the QR code with Google Authenticator. A verification code is required at each login.
Can I log in with a third-party account?
Google, LinuxDo, and NodeLoc OAuth logins are supported. Click the corresponding icon on the login page.
Which image formats are supported?
Output supports PNG, JPEG, WebP. Upload supports all common image formats.
Who owns the generated images?
Per the Terms of Service, users have usage rights to generated content. For commercial use, comply with applicable laws.