独立 Indie MakerAI 独立制造所 · Chinese indie developer directory

Free online tools you can use without installing anything (2026)

Hand-picked 20 products · updated 2026-09-20

Sometimes you just need to crop an image, convert a file or check a device — and you don't want to install another app for it. These 20 tools all run in a browser tab. Many of them process your files locally, so the file never leaves your machine.

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.

Image & Document Processing 5

  1. Image to ASCII 图片转 ASCII 字符画工具，免费无需注册，图片在浏览器本地处理；可调整字符样式、细节和颜色，复制文本或 Markdown，导出 TXT、PNG、SVG 等格式，用于 README、聊天字符画和复古封面 By Lucas-CX
  2. PicPermit 证件照与护照/签证制作工具（免费），支持全球 500+ 官方规格、ICAO 生物线辅助与人脸对齐，抠图，换背景，照片完全本地处理，可导出 300 DPI 电子照与 4×6 寸排版冲印版 By DustarCode · 浙江
  3. PdfCompare 免费免登录的在线 PDF 对比与文本转换工具，基于浏览器 WebAssembly 纯本地运行，毫秒级词级红绿高亮差异与图纸图层叠图对比，文档数据 100% 零上传云端，零泄露风险 By haihiaen
  4. MailMergeOnline PDF 批量生成工具，内置证书、合同、工资单、发票等现成模板，导入 Excel/CSV 并映射字段即可批量生成个性化 PDF，数据不出浏览器 — 无需安装 By Linky-AIinlink
  5. Create PDF from Sheet 将 Excel 转为 PDF，可在浏览器中预览分页、合并多个工作簿，文件不上传数据库、无需注册、无水印 By jankarong

Audio & Video Processing 5

  1. Find Key & BPM 浏览器本地估算 MP3/WAV 的调性、Camelot 和 BPM，音频不上传、无需注册 By Muke
  2. 剪蛋 Jiandan Windows 截图导入辅助工具，将剪贴板图片通过 Ctrl+V 送进剪映专业版，减少另存图片和查找文件；首次需邮箱验证码登录，图片本地处理不上传 By SKYCHENV
  3. VoiceCloner 使用自己的声音，将文字转成语音；每天免费额度，不注册也可使用 By LongAotian
  4. SubtitleGenerator AI 字幕生成与校对工具，自动标出不确定的词并显示剩余检查数，在同一浏览器工作流里完成生成、校对、整轨翻译、字幕样式和视频导出；无需注册可免费处理最长 10 分钟视频 By woshiliyana
  5. Video to Text 视频转文字，支持 CSV、TXT、SRT、VTT 四种导出格式，可以附带时间戳和说话人标签，支持 99 种语言，除上传文件外也支持 YouTube、TikTok、Instagram 等社交媒体平台视频链接 By Dkphhh

Format Conversion & Sharing 3

  1. Formatho 134 个免费开发者工具合集（JSON/YAML/CSV 格式化、JWT 解码、SQL 格式化、哈希生成等），全部浏览器本地处理，无上传无注册，开源（MIT） By Nitin Gurbani
  2. HTMLShare 将静态 HTML 发布为可分享的预览链接，方便快速分享和评审原型页面，无需 Git、生产部署和注册账号 By zeroXu1
  3. CrossTool 跨境卖家本地隐私工具箱，52 个工具 100% 在浏览器内运行（视频压缩、图片转 PDF、成本计算等），零上传零服务器，面向 Amazon/TikTok Shop/Shopify 卖家，免费无需注册 By 863683348

Productivity & Saving Money 5

  1. Trim 订阅扫雷器 订阅账单分析工具，导入支付宝/微信账单自动识别自动续费、算出年度订阅支出与可省金额；账单不上传，识别全在浏览器本地完成，免费无需注册 By leilosss
  2. Interval Timers 间歇计时器（免费），可设置工作时间、休息时间、准备倒计时和循环轮数，并提供声音提示，适合 HIIT、Tabata、健身训练以及其他需要工作/休息循环计时的场景 By pandaupup · 广州
  3. Invoice Downloader 电子发票整理与报销准备桌面应用，从 QQ 或 163 邮箱批量下载发票，也可直接把发票二维码下载成发票，OCR 识别、分类归档并生成报销 Excel 汇总；另有 DeepSeek Harness 插件版本 By EthanYoQ
  4. 热摸爽 全网热搜热榜聚合网站，一站查看微博、知乎、抖音、GitHub Trending 等 200+ 公开来源，支持科技、AI、财经等分类、跨平台事件合并和按日期回看历史热点 — 无需注册，打开即用 By zjzno1
  5. 摸鱼助手 把你想看的视频或小说嵌入工作软件摸鱼的小程序，可快速调整浏览器和桌面窗口的位置、尺寸、置顶与透明度，并自动识别浏览器画中画窗口停靠到屏幕指定位置 By ylv01 · 深圳

Device Diagnostics 2

  1. Dead Pixel Test 屏幕坏点测试工具（免费），通过全屏纯色测试帮助检查显示器、笔记本电脑和其他屏幕的坏点、亮点、暗点及显示异常 By pandaupup · 广州
  2. SubnetDesk 跨平台远程桌面应用，在局域网或 VPN 内通过 mDNS 自动发现设备并用 IP 或主机名直连，无需公网设备 ID、信令或中继；支持 Windows、macOS、Linux 和 Android，AGPL-3.0 开源 By zibo-chen

Frequently asked questions

What can I do without installing software?

Image and document processing, audio and video conversion, file format conversion, QR codes and sharing, device and network diagnostics, and a long tail of small utilities. All of them open in a browser tab.

Do these online tools upload my files?

Not always — it depends on the tool. We mark and favour tools that state they process files locally in the browser. If you're handling contracts, ID photos or anything sensitive, prefer those, and verify by opening your browser's Network panel while processing a file.

Do I need to create an account?

Most don't require it. Several are explicitly 'no signup, no login' — you open the page and start working.

Are browser-based tools slower than desktop apps?

For small files they're usually instant. For big files the limit is your machine's memory rather than the network, since nothing is uploaded. Very large batch jobs are still better done with a desktop tool.

Is this list free?

Yes — the directory itself is free, with no membership and no paid ranking. Individual tools may have their own pricing, which is their business model, not ours.

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