Free, privacy-first browser tools — the file tools never upload your files.
presend.pages.dev is 48 browser tools — the file tools (EXIF/metadata removal, PDF/image compression, format conversion, file integrity checks) run entirely client-side, while some other tools call our API or an online service plus a free, no-signup, no-API-key server-side API with 48 endpoints -- including Cosmos SDK transaction decoding and OFAC sanctions checks -- and an MCP server for AI agents.
Most free file tools quietly upload your file to a server to process it. Presend's file 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 pattern behind the event-stream compromise (2018). It cannot see a hijacked existing account (ua-parser-js) or a malicious release by the original maintainer (colors.js), and a handover to a publisher who already maintains other widely used packages is reported without being flagged.
We are testing a paid offer for teams: the same dependency checks on every pull request that changes a dependency and for AI coding agents before they install a package, with false-positive rates measured and published. Nothing is for sale yet. If your team would use it, join the waitlist.
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presend-source — the site + API (Cloudflare Pages Functions)
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presend-examples — working code for LangChain, CrewAI, LlamaIndex, OpenAI Agents SDK, Google ADK
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presend-mcp-config — copy-paste MCP setup for Claude Desktop, Cursor, Windsurf, no code required
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presend-check-action — GitHub Action for dependency security scanning (npm + PyPI), on the GitHub Marketplace
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presend-extension — browser extension: right-click any image to strip EXIF/GPS on-device
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presend-api — zero-dependency npm client (npmjs.com/package/presend-api)
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security-research — responsible-disclosure writeups, published post-fix only
Edited 2026-10-01: the browser-tools claim now covers the file tools only; some other tools (for example IP geolocation, link preview, DNS lookup, speech-to-text, online text-to-speech voices) call our API or an online service; third-party services are listed in the privacy policy.
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 · Also on RapidAPI (split into Cybersecurity, Finance, and Email listings) · Postman collection
Merged upstream in other open-source projects:
- public-apis/public-apis — added Presend to the Security section (481k stars)
- public-api-lists/public-api-lists — added Presend to the Security section
- anondotli/awesome-privacy-tools — added Presend's EXIF Remover + PDF Metadata Remover
Vanilla JS, Cloudflare Pages + Pages Functions, no framework, no build step for the client-side tools. No ads. Anonymous visit counts only (Cloudflare Web Analytics).