Lumo app icon

为「读」而生的 PDF 阅读器A PDF reader built for reading

秒开,安装包 1 MB 级,界面干净得只剩你的文档。完全离线——你的文件不离开你的电脑。 Opens instantly, weighs about 1 MB, and keeps the interface quiet so your document can speak. Fully offline — your files never leave your Mac.

v1.0 已就绪 · Mac App Store 上架流程进行中 v1.0 ready · App Store release in progress
Lumo 主界面:双页阅读与缩略图栏 Lumo main window: two-page spread with thumbnails

永久免费的部分,就已经够用The free part is already enough

阅读、表单、打印——不设时限,不弹订阅。 Reading, forms and printing — no trial clock, no subscription nags.

秒开 · 流畅Instant & smooth

500 页大文档照样顺滑滚动,冷启动不到一秒。Smooth scrolling even at 500 pages; cold start under a second.

四种阅读主题Four reading themes

日间 / 夜间 / 纸色 / 豆沙绿护眼。夜间只反转纸色,图表颜色完好如初。Day / Night / Sepia / Soft Green. Night mode inverts the paper, not your charts.

记住你读到哪Picks up where you left off

每份文件的位置、缩放、滚动方向都记得,重开就在那一行。Position, zoom and scroll direction remembered per file.

搜索懂中文Search that gets CJK

简繁通搜——输简体也能命中繁体书;全角半角一视同仁。Match Simplified and Traditional together; full-width and half-width alike.

读长文的小配件Built for long reads

自动滚动、阅读进度、按 PDF 自带页码跳转、保持屏幕唤醒。Auto-scroll, reading progress, jump by the PDF's own page labels, keep-awake.

查词 · 朗读 · 智能复制Look up · speak · smart copy

⌃⌘D 查词、朗读选中文字、⌥⌘C 复制自动去掉中文硬换行——全在本机完成。Look up, speak selection, and copy without hard line breaks — all done locally.

表单与打印Forms & printing

表单填写、加密 PDF 解锁、演示模式、中英双语界面。Form filling, encrypted PDFs, presentation mode, English & Chinese UI.

修正带:盖住错字直接打新字 Correction Tape in action

修正带 —— 改个错字,不用装 AcrobatCorrection Tape — fix a typo without Acrobat

像纸上的修正带一样:拖过要改的字,盖住原文直接打新字,字体、字号、颜色自动匹配。随时撤销,任何阅读器可见。 Just like paper: drag over the text, it gets covered, type the correction. Font, size and color match automatically. Undoable, visible in any reader.

完整批注,读书笔记自动整理Full annotations, notes that organize themselves

高亮、画笔、图形、便签、手写签名与印章导入;读完一键把全书批注导出成按章节分组的 Markdown 笔记,自动带上被标注的原文。 Highlights, ink, shapes, notes, hand-drawn signatures and imported seals. Export every annotation to a chapter-grouped Markdown summary with the highlighted text included.

批注套件与批注面板 Annotation suite
夜间模式:图片颜色不反转 Night mode keeps picture colors

深夜读论文,眼睛和配图都不受罪Late-night reading, easy on eyes and figures

夜间模式在渲染层反转纸色并保持图片色相——图表还是图表的颜色。另有豆沙绿护眼主题。 Night mode inverts at the rendering layer while keeping image hues — your charts stay their own colors. A soft-green theme is included too.

发得出去,才算做完Getting it out is part of the job

签完字、改完错字,一键展平副本——批注与签名烧进页面,对方删不掉、挪不动。 几十 MB 的扫描件可压缩到能过邮箱附件;要发敏感文件就加密另存,设个打开密码顺带勾掉复制与打印。 整页可存 PNG/JPEG,也可以直接走系统「共享」发出去。 Signed and corrected? Save a flattened copy — annotations and signatures are burned into the page, so no one can move or delete them. Oversized scans compress down to something email will accept. Sending something sensitive? Save an encrypted copy with an open password and permissions. Pages export as PNG/JPEG, or go straight out through the system Share menu.

导出与共享 Export and share

我们的立场Where we stand

一次买断One-time purchase

没有订阅。v1.x 免费更新。No subscription. Free updates throughout 1.x.

完全离线Fully offline

无账号、无遥测、无 AI。应用不申请网络权限,文件不离开你的电脑。 No account, no telemetry, no AI. The app requests no network access at all.

专注阅读与批注Focused, never bloated

不做臃肿的编辑器,不动你的原文。Never a bloated editor. Your original text is never touched.

定价Pricing

免费下载。Pro 为一次性内购,非订阅。 Free download. Pro is a one-time in-app purchase, not a subscription.

免费Free

¥0$0
永久forever
  • 全部阅读能力:秒开、简繁通搜、目录、标签页Everything reading: instant open, CJK-aware search, outline, tabs
  • 四种阅读主题 · 位置记忆 · 自动滚动 · 演示模式Four themes · position memory · auto-scroll · presentation
  • 查词 · 朗读 · 智能复制 · 表单 · 打印 · 加密 PDFLook up · speak · smart copy · forms · printing · encrypted PDFs

Lumo Pro

¥98$12.99 首发 ¥68Launch $8.99
一次买断(美区 $12.99)one-time purchase
  • 完整批注:高亮 / 画笔 / 图形 / 便签 / 橡皮擦 · 任意颜色与浓度Full annotations: highlight / ink / shapes / notes / eraser · any color
  • 给标注写批注 —— 审阅意见写进 PDF,任何阅读器可见Comment on a highlight — review notes go into the PDF itself
  • 修正带 · 文本框 · 签名(手写 / 打字 / 导入印章)Correction Tape · text boxes · signatures (draw / type / import)
  • 页面管理:合并 / 拆分 / 重排 / 裁剪白边Pages: merge / split / reorder / crop margins
  • 出口齐全:展平 / 压缩 / 加密 / 存图 / 共享Full export: flatten / compress / encrypt / images / share
  • 批注一键导出 Markdown(带原文与评论)Markdown export with quoted text and your comments

获取 LumoGet Lumo

macOS 14 及以上 · Apple Silicon 与 Intel macOS 14 or later · Apple Silicon & Intel

Mac App Store

免费下载 + 内购解锁 Pro,更新由商店托管。 Free download with in-app Pro unlock, updates via the store.

上架流程进行中 · 即将开放In review — coming soon
官网直装(DMG)Direct download (DMG)

签名公证版将在此提供,完全离线安装。 The notarized build will be offered here, fully offline install.

公证准备中Notarization pending