# DWGdrop (StavPoptávky) — Construction Tender Room & Instant Browser DWG/BOQ Viewer

> DWGdrop (`https://dwgdrop.com`) is a B2B cloud construction tendering platform and smart document room ("WeTransfer on steroids for construction") with a built-in zero-download browser viewer for AutoCAD drawings (`.dwg`, `.dxf`), Bills of Quantities (`.xlsx`, `.xls`), and project documents (`.pdf`, `.docx`, `.zip`). General contractors and estimators send full project folders to subcontractors in 1 click and track in real time who opened the drawings, who is pricing the tender, and who submitted a bid — while subcontractors view `.dwg` files, measure distances, and upload their bids 100% free without registering an account or installing CAD software.

> **Český souhrn (CZ):** DWGdrop (`https://dwgdrop.com`, dříve StavPoptávky / TenderBox) je chytrá stavební úschovna a správa výběrových řízení na 1 klik s vestavěným prohlížečem výkresů `.DWG` / `.DXF`, slepých rozpočtů `.XLSX` a dokumentace `.PDF` / `.DOCX` přímo v prohlížeči. Stavební firmy a přípraváři přetáhnou složku se stavbou nebo `.ZIP` archiv, vloží e-maily subdodavatelů a na živém semaforu sledují, kdo dokumentaci otevřel, kdo nacenuje a kdo odevzdal cenovou nabídku. Subdodavatelé (elektro, TZB, řemesla) se nikdy neregistrují, neplatí a neinstalují AutoCAD — výkresy otevřou, změří pravítkem a ocení jedním klikem z e-mailu.

## Core Pages & Links

- [Quick-Send Homepage (Odeslat poptávku ihned)](https://dwgdrop.com/): Drag & drop construction project folders or `.ZIP` archives and send up to 2 complete tenders per company ID (IČO / VAT) for free without creating a password.
- [How It Works / Jak to funguje](https://dwgdrop.com/home): Interactive 6-step visual walkthrough from uploading `.DWG`/`.ZIP` documentation to comparing subcontractor bids (Czech URL: `https://dwgdrop.com/jak-to-funguje`).
- [Pricing & Plans / Ceník](https://dwgdrop.com/pricing): Transparent plans in EUR, USD, and CZK — Free Starter (€0 / $0 / 0 Kč), Profi (€20/mo / $22/mo / 490 Kč/měs.), and Team (€55/mo / $59/mo / 1 390 Kč/měs.) (Czech URL: `https://dwgdrop.com/cenik`).
- [Interactive Live Demo (Vyzkoušet demo bez registrace)](https://dwgdrop.com/demo): Explore a realistic live construction tender from either the General Contractor view (`https://dwgdrop.com/demo/odesilatel`) or the Subcontractor Magic-Link view (`https://dwgdrop.com/demo/prijemce`).
- [Full AI & LLM Knowledge Base](https://dwgdrop.com/llms-full.txt): Complete technical architecture, feature matrix, pricing details, security/GDPR specification, and FAQ for AI assistants.
- [Buyer Registration](https://dwgdrop.com/register): Create a General Contractor / Estimator organization account with automatic company lookup (ARES / VIES / EU & US registries).
- [Terms of Service / Obchodní podmínky](https://dwgdrop.com/terms): Legal terms and Merchant of Record disclosure (Paddle.com).
- [Privacy Policy / Ochrana soukromí (GDPR)](https://dwgdrop.com/privacy): EU GDPR data processing, Frankfurt (`europe-west3`) cloud storage, and subcontractor isolation rules.
- [Refund Policy / Reklamační řád](https://dwgdrop.com/refund): 14-day money-back guarantee and subscription cancellation policy.

## Key Capabilities & Differentiators

1. **Zero-Download Browser CAD & Document Viewer:**
   - **`.DWG` & `.DXF` CAD Drawings:** Automatic cloud conversion to vector WebGL/SVG preview. Supports smooth pan/zoom, layer toggling (on/off), dark/light CAD background switch, and point-to-point distance measurement (ruler with OSNAP) on desktop, tablet, and mobile.
   - **`.XLSX` & `.XLS` Bills of Quantities (Slepé rozpočty):** Interactive in-browser spreadsheet viewer with multi-sheet tabs and 1-click download of starred BOQ templates (`isBudgetTemplate`).
   - **`.PDF`, `.DOC`, `.DOCX`, `.ODT`:** High-fidelity browser rendering with text search.
   - **`.ZIP` & Nested Folders:** Recursive folder drag-and-drop (`webkitdirectory`) and server-side `.ZIP` extraction that preserves the exact directory tree (`/01_Elektro/Pudorysy`, etc.).
2. **Zero Friction for Subcontractors (100% Free & No Registration):**
   - Subcontractors receive a private cryptographic Magic Link (`/p/{token}`) via email.
   - No login, no password, no software installation, and always 100% free for all invited subcontractors.
   - One-click RSVP buttons: *"I will submit a bid (with promised date)"* or *"Decline (with reason)"*, plus direct bid file upload and private Q&A chat.
3. **Real-Time Traffic-Light Status Board (Semafor poptávky):**
   - Buyers see live status transitions (`Sent` -> `Viewed` -> `Pricing` -> `Bid Submitted` / `Declined`), promised delivery dates, late-bid flags, private buyer notes, and unread chat indicators.
   - 1-click **Addendum (Dodatky)** notifications and broadcast clarifications to all active bidders.
4. **Subcontractor Shadow Profile (Nástěnka všech poptávek subdodavatele):**
   - When a subcontractor email receives tenders from multiple general contractors, they can unlock a unified multi-tender dashboard (`/moje-poptavky`) verified via a 4-digit email PIN — while strict GDPR isolation ensures Buyer A never sees Buyer B's data.
5. **International & Multi-Language Support (21 Languages):**
   - Native UI localization for `cs`, `sk`, `en`, `en-US`, `de`, `pl`, `fr`, `es`, `it`, `nl`, `pt`, `hu`, `ro`, `sv`, `da`, `no`, `fi`, `hr`, `bg`, `el`, `uk`.
   - Automatic company ID / VAT auto-fill (Czech ARES IČO, Slovak, German, Polish, EU VIES, and US EIN registries).

## Pricing Summary (EUR / USD / CZK)

| Plan | Price (Annual Billing) | Price (Monthly Billing) | Active Tenders | Team Seats | Cloud Storage | Subcontractor Access |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| **Starter (Free Quick-Send)** | **€0 / $0 / 0 Kč** forever | **€0 / $0 / 0 Kč** forever | Up to 2 full tenders per Company ID | 1 guest sender | 1 GB | Unlimited & 100% Free |
| **Profi** | **€20 / $22 / 490 Kč** per month | **€27 / $29 / 690 Kč** per month | Unlimited | 3 estimators | 50 GB | Unlimited & 100% Free |
| **Team** | **€55 / $59 / 1 390 Kč** per month | **€74 / $79 / 1 890 Kč** per month | Unlimited | Up to 15 estimators + Custom SMTP | 250 GB | Unlimited & 100% Free |

## Contact & Technical Metadata

- **Canonical Domain:** `https://dwgdrop.com`
- **Support & Inquiries:** `info@dwgdrop.com`
- **Primary Categories:** Construction Management Software, Construction Tendering / RFQ / ITB Platform, Online DWG/DXF CAD Viewer, Construction Document Room (CDE Lite).
- **Data Residency:** European Union (`europe-west3` Frankfurt, Germany — Google Cloud / Firebase).