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presendapp/README.md

Presend

Free, privacy-first browser tools — nothing is ever uploaded.

presend.pages.dev is 48 tools that run entirely client-side (EXIF/metadata removal, PDF/image compression, format conversion, file integrity checks) plus a free, no-signup, no-API-key server-side API with 42 endpoints -- including Cosmos SDK transaction decoding and OFAC sanctions checks -- and an MCP server for AI agents.

What makes it different

Most free file tools quietly upload your file to a server to process it. Presend's tools do the work locally in your browser with Web APIs (Canvas, Web Crypto, FileReader) — the file never leaves your device.

The API's most distinctive endpoint, maintainer-change-check, flags an npm package whose publisher changed after a long period of dormancy — the exact pattern behind real supply-chain attacks like event-stream, ua-parser-js, and colors.js. Nothing else free does this specific check.

Repos

Try it

curl "https://presend.pages.dev/api/maintainer-change-check?ecosystem=npm&package=lodash"

Full docs: presend.pages.dev/api · OpenAPI spec: openapi.json · MCP server: presend.pages.dev/mcp · Postman collection

Contributions

Merged upstream in other open-source projects:

Built with

Vanilla JS, Cloudflare Pages + Pages Functions, no framework, no build step for the client-side tools. No ads, no tracking, no cookies.

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  1. presend presend Public

    Free privacy-first browser tools + a 40-endpoint security/utility API (typosquat & vulnerability checks, WHOIS/DNS, MCP server for AI agents). No signup.

    HTML 1

  2. presend-api presend-api Public

    Zero-dependency JS client for the free Presend API — no signup, no API key

    JavaScript

  3. presend-extension presend-extension Public

    Right-click any image to strip EXIF/GPS metadata — part of the Presend toolkit

    JavaScript

  4. presend-check-action presend-check-action Public

    GitHub Action: flag suspicious npm maintainer changes and known vulnerabilities via the free Presend API

    JavaScript

  5. presend-examples presend-examples Public

    Working, tested code examples for using the Presend API and MCP server -- LangChain, CrewAI, LlamaIndex, OpenAI Agents SDK, Google ADK, and plain REST

    Python

  6. presend-mcp-config presend-mcp-config Public

    Copy-paste MCP config for connecting Presend to Claude Desktop, Claude Code, Cursor, and Windsurf -- no code required