倒计时、现场抽奖、幸运转盘、红蓝计分、全屏时钟、图文轮播、视频暖场、背景音乐与弹幕互动，一次配好、一键全屏，投到投影仪或大屏即可使用。无需安装，纯前端本地运行，数据不强制上传。 Countdown, live lucky draw, prize wheel, scoreboard, full-screen clock, slideshow, warm-up video, background music and danmaku — configure once, go fullscreen, and cast to a projector or big screen. No install, runs entirely in your browser, data stays local.
立即打开大屏Open the big screen 查看功能See features 更多工具More tools面向班级活动、公司年会、团建与线下小型活动For class parties, company galas, team building and small offline events
点击即进入浏览器全屏，16:9 逻辑画布自动适配任意分辨率；可另开独立投屏窗口，一边操作一边投影。One-click browser fullscreen with a 16:9 canvas that fits any resolution; open a separate projection window and control from one screen.
目标时间 / 时长 / 正计时，天时分秒毫秒自由开关，四种数字样式，结束音效、弹窗与最后 10 秒提醒。Target / duration / count-up, toggle units, four digit styles, end sound, popup and last-10s cues.
粘贴 / 导入 TXT·CSV 名单，滚动随机开奖，一二三等奖与幸运奖，已中奖去重，记录可导出；支持上传照片名单（图片名即姓名）照片滚动抽取，中奖记录与结果图片自动附带头像。Paste or import lists, scrolling reveal, prize tiers, no-repeat blacklist, exportable records; photo lists (filename = name) with photo-roll reveal, avatars in records and the exported result image.
Canvas 彩色大转盘，扇区取自名单，减速停在中奖者并撒花庆祝，结果由前端加密随机决定；糖果清新样式预设一键换装，支持外圈/投影/指针/中心钮自定义，照片名单者扇区显示头像。A colorful Canvas wheel that spins from your list, eases onto the winner with confetti, crypto-random; one-click style presets, rim/shadow/pointer/hub customization, photo avatars on sectors.
团建 / 游戏分组对抗实时比分，自定义队名与获胜分数，先到即高亮发光，键盘 A/Z·B/N·X 现场操作。Live red-vs-blue scoring with custom names, a winning score that highlights the champion, and A/Z·B/N·X keys.
数字 / 模拟 / 两者并排，带日期与星期，适合候场、休息、考试与等待环节。Digital, analog or both with date and weekday — great for waiting, breaks and exams.
多方案 / 多队 PK 实时投票，控制条一键计票，大屏彩色动画条形显示票数与占比、总票数。Multi-option live voting with animated result bars, share and totals on the big screen.
图片轮播（淡入/滑动/缩放/运镜/随机）、照片墙九宫格、本地视频循环播放、文字轮播与底部横幅走马灯。Image slideshow (fade/slide/zoom/Ken Burns/shuffle), a photo-grid wall, looping local video, rotating text and a scrolling banner.
上传本地音频循环暖场（音量可调、存本地），可开关的弹幕飘屏与快捷弹幕组，WebAudio 合成音效无需素材。Loop local audio for warm-up (volume, stored locally), toggleable danmaku with quick groups, and synthesized SFX.
题库逐题闯关、即时揭示答案与解析，适合培训与知识竞赛；价格牌单图铺满大屏，主视觉与促销价一目了然。Question-by-question quiz with instant reveal and notes for training or contests; price tags put one full-screen product image with a clear headline price.
各场景结果统一汇总：中奖名单、比分记录、投票占比一页核对，中奖记录与结果图片可导出留档。A unified results page — winners, scores and poll shares in one place, with exportable records and result images.
纯静态 PWA：首次打开后即可离线使用，现场断网也不慌；配置自动保存在本机，导出/导入 JSON 随时备份迁移。A static PWA that works offline after the first visit — no network worries at the venue. Settings stay on your device and move via JSON export/import.
一块大屏，覆盖从校园到企业的各类线下活动One big screen for campus-to-corporate offline events
开场欢迎页 + 祝福语轮播 + 同学录照片墙 + 抽奖上台 + 弹幕互动，营造青春氛围。Welcome page, wish rotator, class-photo wall, draw-to-stage and danmaku for a lively night.
开场倒计时 + 幸运大转盘 / 多轮抽奖(一二三等奖) + 节目视频暖场 + 背景音乐,气氛拉满。Opening countdown, prize wheel / multi-tier lucky draw, show videos and BGM to fill the room.
红蓝计分板分组对抗 + 项目计时 + 随机分组 + 团队照片墙,游戏 PK 一目了然。Red-vs-blue scoreboard, round timers, random grouping and a team photo wall for game PKs.
议程欢迎页 + 演讲倒计时(超时提醒) + 全屏时钟 + 资料走马灯,专业控场。Agenda welcome, speech countdown with overtime cues, full-screen clock and a scrolling banner.
主题欢迎页 + 成长/合影照片墙轮播 + 背景音乐 + 祝福弹幕,温馨又有仪式感。Themed welcome, a photo-wall slideshow, BGM and blessing danmaku for a warm ceremony.
倒计时开场 + 主题标语大字 + 产品视频循环 + 发布会时钟,科技简约风一键套用。Launch countdown, big key-message text, looping product film and a clock in a sleek minimal theme.
在控制台选择场景页并填写参数（倒计时、名单、图片/视频），或直接套用快速模板。Pick a scene page and fill in settings (countdown, name list, media), or apply a quick template.
点击「打开大屏窗口」，把它拖到投影仪对应的屏幕，按 F 或点 ⛶ 全屏。Click “Open display window”, drag it to the projector screen and press F or ⛶ for fullscreen.
活动进行中在控制台切换场景、开始倒计时、抽奖 / 转盘、计分、发弹幕。During the event, switch scenes, start the countdown, run the draw/wheel, keep score and send danmaku.
三种常见接法,任选其一即可把大屏画面输出到现场设备Three common setups — pick any to output to the venue display
笔记本用 HDMI 连接投影仪/电视,系统显示设置里选「扩展这些显示器」;把工具「打开大屏窗口」拖到投影仪那块屏,按 F 全屏即可。声音走 HDMI 输出到电视音响。Connect via HDMI, choose "Extend these displays" in display settings, drag the "Open display window" onto the projector screen and press F for fullscreen. Audio travels over HDMI.
用系统的「投屏 / 无线显示」(Windows 的 Win+K、macOS 的隔空播放)或电视自带镜像,把整个屏幕镜像到电视;然后在本机全屏展示即可。Use the OS "Cast / Screen mirroring" (Win+K on Windows, AirPlay on macOS) or the TV's built-in mirror to duplicate your screen, then go fullscreen here.
推荐:笔记本屏幕当控制台(自己看操作),投影仪/大屏只显示「大屏窗口」内容。两端通过本地实时同步,你在控制台切场景、抽奖、计分,大屏同步呈现。Recommended: keep the laptop as the control panel and let the projector show only the display window. Both stay in sync locally as you switch scenes, draw and keep score.
小提示:投屏前先在「主题/全局 · 背景」选好配色与主题,并把浏览器缩放调到 100%,大屏 16:9 画面会自动适配分辨率。Tip: pick your theme/background first and set browser zoom to 100% — the 16:9 stage auto-fits the resolution.
都不需要。它是纯静态网页工具，浏览器打开即用，免费。Neither. It's a static web tool — open it in a browser, free.
不会。素材只在本机浏览器读取播放，抽奖/转盘由前端 JS 计算，配置存本地。No. Media is read/played locally; the draw/wheel run in front-end JS; settings are stored locally.
不会。配置保存在 LocalStorage 与 IndexedDB，也可导出 JSON 迁移。No. Settings persist in LocalStorage and IndexedDB, and you can export JSON.
可以，界面自适应，可用手机当控制台或直接手机全屏展示。Yes, the layout adapts; use a phone as controller or display.
默认跟随浏览器（中文含繁体→中文，其余→英文），也可手动切换。Follows the browser by default (Chinese incl. Traditional → Chinese, else English); manual switch too.
多为音频输出设备未切换。用 HDMI 连接时,在系统声音设置里把输出选为电视/投影仪(HDMI);无线镜像通常随画面同步。首次播放音效/音乐需先在页面点一下以解锁浏览器自动播放限制。Usually the audio output device isn't switched. Over HDMI, pick the TV/projector (HDMI) as the output in sound settings; wireless mirroring carries audio with the video. The first sound needs one click on the page to satisfy the browser's autoplay policy.
把显示模式设为「扩展」而非「复制」,然后点「打开大屏窗口」,将该窗口拖到投影仪屏幕再按 F 全屏;这样大屏只显示展示窗口,你的操作留在本机。Set the display mode to "Extend" (not "Duplicate"), click "Open display window", drag that window onto the projector screen and press F to fullscreen — the projector then shows only the display window while you keep controlling on your machine.