全球免费在线电子书 ebook 资源
1. 古腾堡计划
古腾堡计划是最古老的数字图书馆，提供超过75,000 种公有领域书籍，主要是经典文学和参考资料。你可以下载并永久保存这些经典文本，打造一个个人永久的数字图书馆，供终身参考和灵感。
支持的文件类型：ePub、Kindle、HTML、纯文本
访问方式：https://www.gutenberg.org/
2. 标准电子书
这是一个志愿者驱动的项目，利用公共领域文本，通过现代、专业的排版、细致的校对以及源自公共领域美术的新封面艺术进行加以提升。你会得到最美学精致、高度修正的经典书籍数字版。这个网站让严肃的阅读更加愉快且视觉上更具吸引力。
支持的文件类型：在线阅读或可下载的 ePub、AZW3（Kindle）和 KEPUB（Kobo）。（高级 ePub 也适用于较新的阅读应用。）
访问方式：https://standardebooks.org/
3. 谷歌图书
谷歌图书是一个可搜索的索引，收录了数百万本书籍，包括版权和公有领域书籍。它提供了一项独特功能，允许在整个收藏中进行全文搜索。这作为即时研究工具，你可以快速检索数百万本书，收集引用、核实事实或寻找视觉参考，无需购买或借阅实体书。
支持的文件类型：内容因标题（可在线查看）、PDF（公有领域标题）和 EPUB 而异
访问方式：https://books.google.com/
4. OpenStax
OpenStax是莱斯大学的一个非营利项目，提供高质量、同行评审的开放教育资源（OER）——免费的大学教材——涵盖商业、科学和人文学科等核心学科。你可以立即访问、阅读并免费下载大学水平的教材 PDF。它是免费、权威自学的终极资源。
支持的文件类型：PDF，在线阅读
访问方式：https://openstax.org/
5. LibreTexts
这是一个协作平台，拥有3000 多本由社区编写和策划的开放教育资源教材，分布于 17 个学科领域图书馆。内容公开授权，供灵活且具教育性的使用需求。你可以免费使用大量易于获取的学术知识。内容被组织成小部分，方便你轻松挑选与创作相关的特定章节或主题。
支持的文件类型：PDF，在线阅读
访问方式：https://libretexts.org/
6. 美国数字公共图书馆（DPLA）
DPLA 作为数百万件独特文化遗产物品的单一门户，包括照片、手稿以及来自美国档案馆和博物馆的原始历史研究资料。对于视觉灵感和研究来说，它是无价的工具。对于读者，DPLA 历来出版一批免费、易读的公共文献电子书合集——无需借书证或签到。这些电子书，包括受欢迎的禁书俱乐部（Banned Book Club）书籍，可通过 The Palace Project 应用免费获取，该应用由 DPLA 于 2025 年 6 月将其移交给合作伙伴 Lyrasis。
支持的文件类型：内容因来源机构而异，可下载图片、文本和媒体，在线查看（并通过 The Palace Project 应用免费 EPUB 提供）
访问方式：https://dp.la/
7. HathiTrust 数字图书馆
HathiTrust是一个庞大的保存和访问资源库，涵盖学术和研究机构，提供其19+百万份数字化资料的全文检索。你可以对大量学术和历史文献进行研究。非会员可在线阅读所有公有领域书籍以供学习，但无法下载完整作品。（注：成员大学的学生和教职员工可能拥有完整下载权限。）
支持的文件类型：全文访问（在线阅读），PDF（适用于公有领域书籍）
访问方式：https://www.hathitrust.org/
你有没有喜欢的公共领域在线资源，但上面没有列出？
欢迎在下方评论区分享！
Free Online Ebook Book Resources
1. Project Gutenberg
Project Gutenbergis the oldest digital library, offering over75,000 public domain titles, primarilyclassic literatureand reference works. You candownload and keepthese classic texts forever, building apersonal, permanent digital libraryfor lifelong reference and inspiration.
File Types Supported:ePub, Kindle, HTML, Plain Text
Access:https://www.gutenberg.org/
2. Standard Ebooks
This is avolunteer-driven projectthat takes public domain texts and enhances them withmodern, professional typography, meticulous proofreading, and new cover art derived from public domain fine art. You get the mostaesthetically polished, highly corrected digital versions of classic books. This site makesserious reading more enjoyableand visually engaging.
File Types Supported:Online Reading or Downloadable ePub, AZW3 (Kindle), and KEPUB (Kobo). (Advanced ePub is also available for newer reading apps.)
Access:https://standardebooks.org/
3. Google Books
Google Booksis a searchable index ofmillions of books, including copyrighted and public domain titles. It provides a unique feature that allowsfull-text searchingacross its entire collection. This functions as aninstant research toolwhere you can quickly search inside millions of books to gather quotes, verify facts, or find visual references without needing to buy or borrow the physical copy.
File Types Supported:Varies by title (Viewable online), PDF (for public domain titles), and EPUB
Access:https://books.google.com/
4. OpenStax
OpenStaxis a non-profit initiative of Rice University offeringhigh-quality, peer-reviewedOpen Educational Resources (OER)—free college textbooks—for core subjects like Business, Science, and Humanities. You can instantly access, read, and download college-level textbooks for free as PDFs. It is theultimate resourcefor no-cost,authoritative self-education.
File Types Supported:PDF, Online Reading
Access:https://openstax.org/
5. LibreTexts
This is a collaborative platform featuring over3,000 community-built and curated OER textbooksacross 17 subject field libraries. The content is openly licensed for flexible, educational use. You can utilize a large,accessible collection of academic knowledgefor free.The content is organized in small sections, allowing you to easily pull out specific chapters or topics relevant to your creative work.
File Types Supported:PDF, Online Reading
Access:https://libretexts.org/
6. Digital Public Library of America (DPLA)
The DPLA serves as a single portal to millions of unique cultural heritage items, including photos, manuscripts, and original historical research material from U.S. archives and museums. For visual inspiration and research, it is an invaluable tool. For readers, DPLA has historically published a collection of free, easy-to-read ebooks from public documents—no library card or sign-in is required. These ebooks, including the popularBanned Book Clubtitles, are accessible at no cost through The Palace Project app, which DPLA transitioned to its partner Lyrasis in June 2025.
File Types Supported:Varies by source institution, Downloadable images, texts, and media, Viewable online (and free EPUBs via The Palace Project app)
Access:https://dp.la/
7. HathiTrust Digital Library
HathiTrustis a vast preservation and access repository from academic and research institutions, providingfull-text searchingacross its19+ million digitized items. You can perform research across a massive collection of academic and historical texts. Non-members canread all public domain titles online for study, but cannot download the complete work.(Note: Students and staff at member universities may have full download access.)
File Types Supported:Full-text access (online reading), PDF (for public domain titles)
Access:https://www.hathitrust.org/
Do you have a favorite public domain online resource that isn’t listed above?
Share in the comments below!
