TreeMap
무료 오픈소스 디스크 사용량 시각화 도구로, 사각형 트리맵·중복 파일 탐색·디스크 가득 예측·정리 시 파일을 휴지통으로만 이동한다
브라우저에서 바로 쓰는 무료 오픈소스 PDF·이미지·텍스트 등 도구, 파일은 기기에만 남고 계정·광고 없이
Free, open-source tools for PDFs, images, text and more, right in your browser. Your files stay on your device. No accounts, no ads.
생산성JavaScript · AstroGitHub @sapience-design온라인운영자 미확인
써 보셨어요? 한 번만 눌러 주세요. 로그인은 필요 없어요.
Free, open-source tools that run in your browser. Nothing is uploaded. A Sapience initiative.
저장소 README에서 가져옴
README 전체를 불러오는 중입니다.
README 전문 보기 ↗Everyday tools should not cost money. They should not come with ads. They should not put your files at risk. They should not be hard to find. So here they are: one place, every tool, free for everyone. Help us build the next one.
Free the Tools is a Sapience Design initiative, built in the open with anyone who wants to help.
freethetools package.People ask for tools that do not exist yet. Accepted requests are open requests, and anyone can suggest a tool.
Open freethetools.com and pick a tool. There is nothing to install and no account to make.
Developers and AI agents can read the catalogue at /api/tools.json (described in openapi.yaml) or /llms.txt.
Claude, Cursor and other AI assistants can use the tools instead of installing software such as Ghostscript, ImageMagick or a Python package, and without sending files to a server. It is free, with no account or login. Files stay on the device either way. There are two channels, and both use one definition per tool (ADR 0008).
| Channel | For | Setup |
|---|---|---|
The freethetools npm package, an MCP server on your computer | Claude Code, Claude Desktop, Cursor and other MCP clients | One step: Claude Code plugin (/plugin marketplace add sapience-design/freethetools, then /plugin install freethetools@freethetools), Gemini CLI (gemini extensions install https://github.com/sapience-design/freethetools), or the Add to Cursor and Add to VS Code buttons on freethetools.com/ai. By hand: claude mcp add freethetools -- npx -y freethetools mcp |
| WebMCP on each tool page | AI agents inside a browser | None. Chrome and Edge support it in origin trials; other browsers ignore it. |
The package is published on npm and listed in the official MCP Registry as io.github.sapience-design/freethetools. It reads files by path, saves results in a freethetools folder in your home folder, and records every job in library.jsonl. It also has a command line for agents without MCP: npx -y freethetools run <tool> '<json>'. Setup for each client is in docs/how-to/use-with-ai.md. The package source is in packages/freethetools. There is no hosted MCP server, because the files would have to be uploaded.
Services such as iLovePDF or CloudConvert process files on their own servers. Every file costs something to handle there, so free plans usually come with limits. Here the visitor's device does the work and the pages are static files, so a million visitors cost about what one does. That is why "free, with no limits" is a promise we can keep.
A browser can do more than most people expect. Ghostscript and qpdf run inside the page as WebAssembly, alongside pdf-lib, pdf.js and the image codecs, and the tools keep working offline once opened. Text recognition, translation and speech-to-text can run the same way. The gap between "needs a server" and "runs on your device" shrinks every year, and the tool list grows with it. Jobs a browser cannot do yet wait; we do not add a server to get there.
Open a tool request. Vote for existing requests with a 👍. Requests a maintainer accepts are labelled wanted and show on the site as open requests.
Most tools take an afternoon. The contributor guide walks you through it:
git clone https://github.com/sapience-design/freethetools.git
cd freethetools
npm install
npm run new-tool -- text word-counter "Word Counter"
npm run dev # http://localhost:4321/text/word-counter/
tools/<group>/<tool>/ | One folder per tool: tool.json (name, search text, specs, questions), Tool.astro (the interface), core.js (the logic) and tests |
src/ | The site: layout, home and group pages, tool pages, API and search files, all built from the tool folders |
astro.config.mjs | The Content Security Policy that keeps every page on its own origin |
worker/, migrations/ | The only server code: anonymous usage totals at /api/stats/*, stored in Cloudflare D1 |
packages/freethetools/ | The npm package: an MCP server and command line that run the tools on your computer. Build it with npm run build:package |
e2e/, tests/ | Browser tests and checks on the built site |
docs/ | Tutorials, how-to guides, reference and design decisions |
The site is static Astro plus one small Worker for anonymous totals, hosted on Cloudflare Workers, which builds and deploys every merge to main. Read docs/explanation/architecture.md for the reasoning.
Free the Tools has no ads and no paywall. If it saves you time, you can donate or sponsor a tool. Money never buys features or placement.
Code: AGPL-3.0, copyright © Sapience Design and contributors. Third-party parts are listed in NOTICE.
"Free the Tools" and the Sapience name and logo are trademarks of Sapience Design and are not covered by the code licence. You are welcome to fork the code under a different name. See TRADEMARKS.md.
| Text | Change text to UPPER or lower case · Turn Markdown into HTML · Compare two texts · Count words |
| Data | Turn a spreadsheet into JSON · Tidy up and check JSON |
| Everyday | Convert a colour between formats · Convert any file · Convert time zones · Convert units · Convert a Unix timestamp to a date |