Browser extensions and in-browser tools by Chinese indie developers (2026)
Hand-picked 17 products · updated 2026-09-20
Extensions and browser-native tools: {n of them}, covering bookmark and tab management, downloading web media, reading and translation, creative experiments, and in-browser format conversion. All from Chinese indie developers, mostly free.
Product names and descriptions are kept in the developers' original Chinese — we don't machine-translate the data. Every listing links to our own product page, which in turn links to the product's official site.
Bookmarks & Tab Management 2
- BookmarkHell 浏览器书签整理工具，导入 Chrome 或 Edge 导出的书签文件，去重、分类，检查和调整后导回浏览器
- LazyTabs Chrome 标签页收纳插件，支持自定义和编辑收纳规则
Web Media & Downloads 3
- FlowPick 自动检测并下载网页中的视频、音频和图片等媒体资源 — 免费开源浏览器扩展
- 网页视频港 WebVideoHarbor 免费开源的 macOS 网页媒体保存工具，通过 Chrome 扩展识别 MP4、WebM 与非加密 HLS/M3U8，并由本地助手完成下载
- FluxDown 多协议下载管理器，一个任务队列同时收 HTTP/FTP、BT 磁力、eD2K、HLS 和 DASH，IDM 式动态分段（下载途中继续切分剩余区间，慢节点不拖住收尾），装扩展后自动接管浏览器下载，Win/macOS/Linux/Android 全平台免费开源
Reading & Comprehension 2
- Kindly-Web 开源 Chrome 浏览器插件，自动扫描评论区（目前已适配 Bilibili），调用大语言模型将带有攻击性、阴阳怪气或负面情绪的评论实时重写为和谐、友善且理性的表达
- 沉淀记 Loamery 一键保存或提炼 ChatGPT、Claude、Gemini、DeepSeek、豆包、Kimi 中有价值的回答，通过搜索、收藏和项目整理，把零散的 AI 对话沉淀成可长期查找的个人知识库，数据本地优先保存 — 浏览器插件
Creative & Entertainment 5
- YiBoard 浏览器里直接下的棋类平台，免费对真实 AI 引擎或好友下五子棋，无需账号、无需下载，从「九级」一路升到「九段」的 18 级天梯，中国象棋和围棋也已列入路线图
- Synthesizer Flow 浏览器端模块化合成器，通过可视化节点和连线搭建音频工作流，支持实时声音合成、MIDI 音序及 AI Agent 辅助修改工程
- LiveFaceSwap AI 实时 AI 换脸工具，可在浏览器中体验换脸、换装和风格重绘；Windows 11 桌面版可通过虚拟摄像头接入直播、会议和视频通话软件
- 0trace 纯 P2P 浏览器端对端聊天与文件传输，无服务器中转、无需注册、打开即用
- TempCanvas 免费、无需注册的临时在线白板，打开即可快速画图、手写记录和导出 PNG，内容仅保存在浏览器本地
Conversion & Dev Helpers 5
- Chrome Renamer 本地替换 Google、YouTube 与 Chrome 页面中的品牌名称，支持自定义新标签页；无需账号，设置只保存在浏览器本地 — Chrome 扩展，需启用开发者模式手动加载
- ImageToSTL.online 免费 PNG/JPG 转 STL 在线工具，浏览器本地生成可 3D 打印模型，支持 logo 挤出、浮雕、lithophane 与钥匙扣，无需注册
- Semaphore 图片拖进浏览器秒变 ASCII 字符画，无上传无注册，一键复制成纯文本贴进终端、代码注释、聊天窗口，支持盲文点阵高密度模式与 txt / PNG / 分享卡片导出
- AiXian 工具箱，把桌面级工具装进浏览器，PDF 合并、图片去背景、AI 证件照、JSON 格式化、OCR 识别等 50+ 工具，全部本地处理，文件不出设备
- Next BConvert 70+ 免费工具，支持图片、视频、音频、PDF 和文本处理，浏览器本地运行，无需上传、无需账号、无限制
Frequently asked questions
Which browsers do these extensions support?
Mostly Chrome and Edge, and many also work in Firefox or other Chromium browsers. The individual product page says which stores it's published in.
Are these extensions safe to install?
We list the developer's own description without rewriting it, and every entry links to the product's official page and store listing. Extensions request browser permissions — check those in the store listing before installing, as you would with any extension.
What can a new-tab or bookmark extension actually do?
Typically: replace the new-tab page with something useful, manage large numbers of bookmarks and tabs, switch between search engines, and sync settings without an account.
Are there extensions that keep data local?
Yes — several explicitly state they collect no personal data and store settings locally. Those are marked in the product description.
Do I have to pay for these?
Most are free. A few have a paid tier for extra features, which is the product's own model. The directory itself is free.