Multi-Format Online Preview
Preview PDFs, Office presentations, spreadsheets, high-efficiency images, and videos directly in any browser with zero client installs and dynamic watermark protection.
Zero-Install Universal Viewer
External recipients do not need Microsoft Office, specialized spreadsheet tools, or proprietary media players. Every document renders vector-sharp in modern desktop and mobile browsers, ensuring immediate review without friction.
Comprehensive Format Support
Every format renders directly in the browser with high-fidelity typography, responsive controls, and zero client installation.
PDF Documents
Vector-sharp typography, responsive multi-page layout, and dynamic watermarks across every rendered page.
Word & Presentations
Faithful font rendering, slide navigation, and layout preservation without requiring Microsoft Office.
Spreadsheets & Financials
Interactive tabular browsing with multiple sheets, formula results, and freeze pane preservation.
Images & Mobile Photos
Automatic server-side decoding of Apple HEIC/HEIF files alongside standard high-resolution web formats.
In-Browser Video Playback
Stream product walkthroughs, architecture overviews, and demo clips with adaptive HTML5 controls and protected streaming.
Security & Dynamic Watermarking on Previews
Online previewing does not mean compromising security. Coneshare renders documents server-side and dynamically stamps the viewer's verified email and timestamp diagonally across every page canvas. When download is disabled, the recipient can inspect every slide or cell, but cannot export or extract the raw underlying file.
Seamless Page-Level Tracking
Because presentations and documents are rendered slide by slide, Coneshare captures second-by-second reading time on each page. You know precisely when a reviewer reviewed the financial projections in an Excel sheet or paused on a key slide in a PowerPoint deck.
Typical Workflow
- 1Upload documents, spreadsheets, presentations, media, or raw datasets.
- 2Coneshare background workers automatically generate high-fidelity browser previews.
- 3External recipients view files instantly in their browser with dynamic watermarks and access rules.
- 4Optional download locks ensure proprietary files cannot be saved locally.
Related Use Cases
Investor Awareness
Never miss the moment an investor engages with your deck. Convert viewing signals into timely follow-up actions.
Engagement Visibility
Separate real prospects from noise by tracking views, downloads, and revisits across documents and datarooms.
Deal Visibility
Understand how buyers explore your deal across datarooms and document interactions before every conversation.
Next Step
See this feature live in Coneshare
Explore the demo environment and see how real-time activity and automation work together in practice.