免费 AI 图片生成器

AI 图片工具

在线抠图、放大、扩展或转换现有图片的风格。每个工具都有专门的操作流程，处理结果统一保存在同一个私人图库。

背景移除抠出主体，返回透明底 PNG。图片放大放大 2 倍或 4 倍，画面不糊。图片扩展向画面外延伸内容，把图片扩展到新的宽高比。风格转换保留主体，把照片转换成插画等不同风格。

AI 图片模型

在同一个界面使用四个图片生成模型。打开模型页面可以查看擅长领域、示例图片和推荐提示词。

FLUX Schnell快速生成草稿和多张变体，适合高效探索创意。Nano Banana Pro擅长复杂场景、清晰文字和参考图引导的图片编辑。GPT Image 2精准理解提示词，适合插画、产品图和精细版式。Seedream 5.0 Pro适合成品版式、多语言文字、写实材质和多参考图编辑。

AI 图片生成器作品示例

浏览由真实提示词生成的图片。点开任意示例查看大图、复用提示词，或者直接把这张图片作为参考图继续创作。

光圈对比Canon 85mm portrait of a woman during the blue hour after sunset in a city, a four-panel comparison shot at f/1.8, f/2.8, f/10 and f/14, background blur changing across the panels, natural skin tones.打开预览 →促销海报A modern, playful graphic poster for a Christmas sale — bold typography, vibrant festive colours, clean layout with room for a discount badge.打开预览 →产品静物A ceramic coffee cup on a pale stone surface, morning side light, soft shadow, minimal product photography.打开预览 →潮玩手办A collectible vinyl figurine of a young traveller with a backpack on a neutral grey backdrop, soft studio light, glossy finish.打开预览 →微距细节Macro photograph of a wristwatch face, brushed metal texture, fine engraving, dramatic reflections, dark background.打开预览 →多人合影Three friends laughing together at an outdoor table, candid group photograph, warm late afternoon light, all faces sharp.打开预览 →封面版式A minimal magazine cover layout: a large headline area at the top, a single centred object below, generous margins, two-colour palette.打开预览 →蓝调时刻的城市骑手A bicycle courier in a cobalt jacket crossing a rain-slick city intersection just after sunset, subject sharply rendered against controlled motion blur, warm storefront reflections, cinematic editorial photography, realistic fabric and street texture.打开预览 →机器人纸艺工坊Four palm-sized ceramic robots collaborating in a warm tabletop workshop to build three oversized coral and saffron paper flowers, tactile stop-motion craft style, visible paper fibres, glazed ceramic and soft morning studio light.打开预览 →植物茶包装Premium product photograph of a cream paper tea box and matching cylindrical tin with precise botanical line engraving on a dark walnut table. Labels read "LUMA TEA" and "JASMINE · No. 04", crisp fine detail, forest green ink, brass accents and soft directional studio light.打开预览 →创意工作流信息图A clean four-step product design workflow infographic titled "FROM IDEA TO LAUNCH". Four equal blocks connected left to right and labelled "IDEA", "SKETCH", "BUILD", "SHIP", with the footer "A SIMPLE CREATIVE WORKFLOW", polished vector style, precise alignment and generous whitespace.打开预览 →材质图鉴A premium landscape editorial infographic titled "MATERIAL ATLAS". Arrange four precise material studies in a clean modular grid: translucent glass, brushed metal, folded ivory textile and deep cobalt ceramic. Add the exact labels "GLASS", "METAL", "TEXTILE" and "CERAMIC" beneath the matching samples, generous warm-white margins, subtle measurement marks, refined studio lighting and a sophisticated contemporary design-magazine art direction.打开预览 →spectrum-futures-posterA finished vertical bilingual design festival poster set in a dark gallery, featuring a monumental translucent glass ribbon sculpture refracting cyan, violet, coral and amber light. Render the exact headline "光谱未来 · SPECTRUM FUTURES", supporting lines "SHANGHAI DESIGN WEEK" and "08—14 OCT 2026", and footer "WEST BUND ART CENTER". Cinematic photorealism, refined cultural-poster typography, polished black floor reflections, clear hierarchy and no extra text.打开预览 →一段故事，三座城市A polished landscape editorial fashion triptych with exactly three equal vertical panels showing the same fictional East Asian woman with the same short black bob, facial features and cobalt blue trench coat in rainy Shanghai at blue hour, quiet Paris in soft morning light and neon Tokyo at night. Keep her identity and outfit clearly consistent while changing only pose, city, weather and lighting. Render the exact headline "ONE STORY · THREE CITIES" once, perfectly legible, with a clean structured grid, cinematic photography and no other text.打开预览 →

信息图海报A dense infographic poster explaining how an AI image generator works: labelled diagram blocks, connecting arrows, small captions, legible typography, muted technical colour palette.打开预览 →知识卡片A set of study cards explaining how Git works: one concept per card, large heading, three bullet points, a simple icon, consistent grid layout.打开预览 →棚拍人像Studio portrait of a woman in a cream knit sweater by a window, soft daylight, shallow depth of field, natural skin texture.打开预览 →绘本场景A hand-painted watercolour countryside scene with a small cottage, soft pastel palette, storybook illustration, gentle light.打开预览 →拥挤的夜市A busy night market street with many stalls, lanterns and people, every stall readable, deep detail throughout, cinematic light.打开预览 →包装实拍A craft coffee bag on a wooden counter, warm morning light, the brand name printed clearly on the label, shallow depth of field.打开预览 →流程图A flow diagram of four labelled blocks connected by arrows on an off-white background, muted blue and grey palette, technical illustration.打开预览 →扁平插画Flat isometric illustration of a person working at a desk with plants and a laptop, pastel palette, white background.打开预览 →夜市海报A refined vertical travel poster for an evening food market, a richly detailed night market with many coherent stalls, lanterns, diners and steam below a clear headline. Render "NIGHT MARKET" and "FRIDAY · 6 PM" exactly once, premium editorial illustration, deep indigo and warm vermilion.打开预览 →设计杂志封面An architecture magazine cover with exactly one sculptural cobalt chair in a quiet concrete gallery, rigorous Swiss-influenced layout and generous margins. Headline "FORM & FUNCTION", supporting lines "ISSUE 08" and "OBJECTS WITH PURPOSE", warm off-white paper and one vermilion rule.打开预览 →上海夜市A sophisticated vertical cultural travel poster for a Shanghai night market, dense but carefully structured composition with red lanterns, steaming food stalls, handwritten menu boards, diners and wet street reflections. Render the exact headline "夜市 · NIGHT MARKET" and the exact footer "SHANGHAI · 19:00". Deep ink blue, lacquer red and warm gold palette, cinematic photorealism with premium editorial typography and clear visual hierarchy.打开预览 →Lumen 精华广告A premium landscape skincare campaign with exactly three frosted glass serum bottles on pale limestone, translucent plum and warm coral liquids, brushed silver caps, soft directional studio daylight, convincing glass refraction and tactile stone detail. Compose it as a sophisticated advertising layout with generous cream negative space. Render the exact large headline "LUMEN · 光" and the exact small line "DAILY SERUM", perfectly legible, with refined international design-magazine art direction and no extra text.打开预览 →tidal-house-architecture-boardA polished landscape architectural presentation board for a compact coastal retreat named "TIDAL HOUSE". Use a rigorous warm-white modular grid with one large photorealistic exterior rendering and three precise supporting panels: a floor plan, a section drawing and a material palette of oak, brushed aluminium, linen and sea stone. Render the exact labels "PLAN", "SECTION", "MATERIALS" and footer "COASTAL RETREAT · 2026". Contemporary Swiss editorial design, convincing materials, generous margins and no extra text.打开预览 →

光圈对比Canon 85mm portrait of a woman during the blue hour after sunset in a city, a four-panel comparison shot at f/1.8, f/2.8, f/10 and f/14, background blur changing across the panels, natural skin tones.打开预览 →知识卡片A set of study cards explaining how Git works: one concept per card, large heading, three bullet points, a simple icon, consistent grid layout.打开预览 →绘本场景A hand-painted watercolour countryside scene with a small cottage, soft pastel palette, storybook illustration, gentle light.打开预览 →微距细节Macro photograph of a wristwatch face, brushed metal texture, fine engraving, dramatic reflections, dark background.打开预览 →流程图A flow diagram of four labelled blocks connected by arrows on an off-white background, muted blue and grey palette, technical illustration.打开预览 →蓝调时刻的城市骑手A bicycle courier in a cobalt jacket crossing a rain-slick city intersection just after sunset, subject sharply rendered against controlled motion blur, warm storefront reflections, cinematic editorial photography, realistic fabric and street texture.打开预览 →夜市海报A refined vertical travel poster for an evening food market, a richly detailed night market with many coherent stalls, lanterns, diners and steam below a clear headline. Render "NIGHT MARKET" and "FRIDAY · 6 PM" exactly once, premium editorial illustration, deep indigo and warm vermilion.打开预览 →材质图鉴A premium landscape editorial infographic titled "MATERIAL ATLAS". Arrange four precise material studies in a clean modular grid: translucent glass, brushed metal, folded ivory textile and deep cobalt ceramic. Add the exact labels "GLASS", "METAL", "TEXTILE" and "CERAMIC" beneath the matching samples, generous warm-white margins, subtle measurement marks, refined studio lighting and a sophisticated contemporary design-magazine art direction.打开预览 →spectrum-futures-posterA finished vertical bilingual design festival poster set in a dark gallery, featuring a monumental translucent glass ribbon sculpture refracting cyan, violet, coral and amber light. Render the exact headline "光谱未来 · SPECTRUM FUTURES", supporting lines "SHANGHAI DESIGN WEEK" and "08—14 OCT 2026", and footer "WEST BUND ART CENTER". Cinematic photorealism, refined cultural-poster typography, polished black floor reflections, clear hierarchy and no extra text.打开预览 →

信息图海报A dense infographic poster explaining how an AI image generator works: labelled diagram blocks, connecting arrows, small captions, legible typography, muted technical colour palette.打开预览 →棚拍人像Studio portrait of a woman in a cream knit sweater by a window, soft daylight, shallow depth of field, natural skin texture.打开预览 →潮玩手办A collectible vinyl figurine of a young traveller with a backpack on a neutral grey backdrop, soft studio light, glossy finish.打开预览 →包装实拍A craft coffee bag on a wooden counter, warm morning light, the brand name printed clearly on the label, shallow depth of field.打开预览 →封面版式A minimal magazine cover layout: a large headline area at the top, a single centred object below, generous margins, two-colour palette.打开预览 →机器人纸艺工坊Four palm-sized ceramic robots collaborating in a warm tabletop workshop to build three oversized coral and saffron paper flowers, tactile stop-motion craft style, visible paper fibres, glazed ceramic and soft morning studio light.打开预览 →创意工作流信息图A clean four-step product design workflow infographic titled "FROM IDEA TO LAUNCH". Four equal blocks connected left to right and labelled "IDEA", "SKETCH", "BUILD", "SHIP", with the footer "A SIMPLE CREATIVE WORKFLOW", polished vector style, precise alignment and generous whitespace.打开预览 →上海夜市A sophisticated vertical cultural travel poster for a Shanghai night market, dense but carefully structured composition with red lanterns, steaming food stalls, handwritten menu boards, diners and wet street reflections. Render the exact headline "夜市 · NIGHT MARKET" and the exact footer "SHANGHAI · 19:00". Deep ink blue, lacquer red and warm gold palette, cinematic photorealism with premium editorial typography and clear visual hierarchy.打开预览 →tidal-house-architecture-boardA polished landscape architectural presentation board for a compact coastal retreat named "TIDAL HOUSE". Use a rigorous warm-white modular grid with one large photorealistic exterior rendering and three precise supporting panels: a floor plan, a section drawing and a material palette of oak, brushed aluminium, linen and sea stone. Render the exact labels "PLAN", "SECTION", "MATERIALS" and footer "COASTAL RETREAT · 2026". Contemporary Swiss editorial design, convincing materials, generous margins and no extra text.打开预览 →

促销海报A modern, playful graphic poster for a Christmas sale — bold typography, vibrant festive colours, clean layout with room for a discount badge.打开预览 →产品静物A ceramic coffee cup on a pale stone surface, morning side light, soft shadow, minimal product photography.打开预览 →拥挤的夜市A busy night market street with many stalls, lanterns and people, every stall readable, deep detail throughout, cinematic light.打开预览 →多人合影Three friends laughing together at an outdoor table, candid group photograph, warm late afternoon light, all faces sharp.打开预览 →扁平插画Flat isometric illustration of a person working at a desk with plants and a laptop, pastel palette, white background.打开预览 →植物茶包装Premium product photograph of a cream paper tea box and matching cylindrical tin with precise botanical line engraving on a dark walnut table. Labels read "LUMA TEA" and "JASMINE · No. 04", crisp fine detail, forest green ink, brass accents and soft directional studio light.打开预览 →设计杂志封面An architecture magazine cover with exactly one sculptural cobalt chair in a quiet concrete gallery, rigorous Swiss-influenced layout and generous margins. Headline "FORM & FUNCTION", supporting lines "ISSUE 08" and "OBJECTS WITH PURPOSE", warm off-white paper and one vermilion rule.打开预览 →Lumen 精华广告A premium landscape skincare campaign with exactly three frosted glass serum bottles on pale limestone, translucent plum and warm coral liquids, brushed silver caps, soft directional studio daylight, convincing glass refraction and tactile stone detail. Compose it as a sophisticated advertising layout with generous cream negative space. Render the exact large headline "LUMEN · 光" and the exact small line "DAILY SERUM", perfectly legible, with refined international design-magazine art direction and no extra text.打开预览 →一段故事，三座城市A polished landscape editorial fashion triptych with exactly three equal vertical panels showing the same fictional East Asian woman with the same short black bob, facial features and cobalt blue trench coat in rainy Shanghai at blue hour, quiet Paris in soft morning light and neon Tokyo at night. Keep her identity and outfit clearly consistent while changing only pose, city, weather and lighting. Render the exact headline "ONE STORY · THREE CITIES" once, perfectly legible, with a clean structured grid, cinematic photography and no other text.打开预览 →

AI 图片生成功能

AI 图片生成器常见问题

了解图片模型、免费积分、提示词，以及生成第一张 AI 图片前需要准备什么。

1. 1

   什么是 AI 图片生成器？

   它把一段文字描述变成一张图片。你写下想要的画面，选好模型和画幅，几秒钟就能拿到成品——不用会画画，不用翻图库，也不用打开修图软件。

2. 2

   是免费的吗？

   有免费额度。注册即赠送积分，够生成好几张图，不需要填付款信息。付费套餐提供更高画质的模型、更多的每月积分和 API 访问。

3. 3

   可以用哪些模型？

   FLUX Schnell 适合快速草稿，Nano Banana Pro 处理复杂细节，GPT Image 2 擅长精准版式，Seedream 5.0 Pro 适合成品视觉和多参考图创作。它们都能在同一个输入框里切换。

4. 4

   能在图片里生成文字吗？

   可以。把要出现的文字加引号写进提示词——比如海报标题、产品标签上的字——模型会把它画进图里。对文字要求特别高时，选 Nano Banana Pro 或 GPT Image 2。

5. 5

   积分是怎么算的？

   每次生成按模型和张数扣积分，FLUX Schnell 一张图 1 积分起。生成按钮旁边会先显示这次要花多少积分；登录后那里会换成你的余额。

6. 6

   需要安装什么或者自备 API Key 吗？

   都不用。模型跑在我们这边，不用下载、不需要显卡、也不用粘贴任何密钥，电脑和手机浏览器打开就能用。