Presend — Free Privacy Tools, a Security API, and an MCP Server for AI Agents
Presend is three things: 48 free browser-based file tools (nothing ever uploaded), a free 41-endpoint security/utility API (no signup, no key), and an MCP server exposing 33 of those endpoints to AI agents.
Open Presend · API docs · OpenAPI spec · MCP server
Why Presend?
Unlike most online tools, Presend processes files entirely locally in your browser -- your files never leave your device. And unlike most free API directories, the API layer has no signup wall or aggressive rate limits gating basic use.
- 100% Private (browser tools) -- Web Crypto API, Canvas API, FileReader -- all client-side
- Real supply-chain security (API) --
maintainer-change-checkflags a package whose publisher changed after a long dormancy, the pattern behind event-stream, ua-parser-js, colors.js - Instant -- Cloudflare CDN, loads in under 1 second globally
- PWA -- Install on mobile/desktop, works offline
- Free Forever -- No freemium, no watermarks, no limits
API & MCP Server
- REST API -- 40 free endpoints: security & verification (WHOIS/DNS, package vulnerability & typosquat checks, malware scanning, JWT decode/verify, GitHub repo health, maintainer-change detection), file & image processing, and everyday utilities. Full OpenAPI 3.0 spec.
- MCP server -- 33 tools over Streamable HTTP, no signup, no key. Verified working with LangChain, CrewAI, LlamaIndex, OpenAI's Agents SDK, and Google's ADK.
- npm client --
npm install presend-api, zero-dependency, wraps 42 methods. - GitHub Action -- drop-in dependency security scanning (npm + PyPI) for any CI pipeline.
- Code examples -- working Python for LangChain, CrewAI, LlamaIndex, OpenAI Agents SDK, Google ADK, and plain REST.
- MCP config guides -- copy-paste setup for Claude Desktop, Claude Code, Cursor, and Windsurf, no code required.
- Browser extension -- "Presend — Clean Photos", strips EXIF/GPS on right-click.
Browser Tools (48 total, 22 shown below)
| Tool | What it does | Link |
|---|---|---|
| EXIF Remover | Strip GPS, camera model, timestamps from photos | Open |
| PDF Metadata Remover | Remove author, software, dates from PDFs | Open |
| Image Compressor | Shrink JPG/PNG/WebP with quality preview | Open |
| PDF Compress | Reduce PDF file size without quality loss | Open |
| PDF Merger | Combine multiple PDFs into one document | Open |
| Image Resizer | Resize to exact dimensions (Instagram, LinkedIn, Twitter) | Open |
| HEIC to JPG Converter | Convert iPhone photos to universal JPG | Open |
| Video Metadata Remover | Strip GPS and device data from MP4/MOV | Open |
| Office Metadata Remover | Clean Word, Excel, PowerPoint hidden data | Open |
| File Hash Checker | Verify SHA-256, SHA-1, SHA-512 checksums | Open |
| Password Generator | Create cryptographically secure passwords | Open |
| Password Strength | Analyze password entropy and crack time | Open |
| QR Code Generator | Generate QR codes for URLs, WiFi, text | Open |
| URL Cleaner | Remove tracking parameters (UTM, fbclid, gclid) | Open |
| Email List Cleaner | Deduplicate, validate, clean email lists | Open |
| JSON to CSV Converter | Convert between JSON and CSV instantly | Open |
| Image to Base64 | Encode images for embedding in HTML/CSS | Open |
| Text Diff | Compare two texts side by side | Open |
| Text Formatter | Bold, italic, stylized text for social media | Open |
| Thread Splitter | Split long text into Twitter/X threads | Open |
| Word Counter | Count words, characters, reading time | Open |
| Color Contrast | Check WCAG accessibility contrast ratios | Open |
SEO and Performance
Presend is built for search engines and AI assistants:
- Schema.org: HowTo, FAQPage, SoftwareApplication, BreadcrumbList, Organization on every page
- Dynamic Sitemap: 842 URLs auto-updated (40 tools + blog/guide pages, across 8 languages)
- Dynamic OG Images: API generates social preview images per tool
- Core Web Vitals: Preconnect, DNS-prefetch, CSS preload, zero render-blocking JS
- PWA: Service worker + manifest for offline use and installability
- Privacy-First Analytics: Cloudflare Web Analytics (no cookies, no IP tracking)
Embed on Your Site
Add a Presend tool to your website or link back to us:
Tech Stack
- Frontend: Vanilla HTML5, CSS3, ES6 (zero build step)
- Hosting: Cloudflare Pages (200+ edge locations)
- APIs: Cloudflare Workers (share links, analytics, sitemap, OG images)
- Storage: Cloudflare KV (share links, 30-day TTL)
- PWA: Service Worker + Web App Manifest
License
MIT — free to use, modify, and embed.
