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How to open the formats your computer refuses to, and what to do when a file is corrupt, locked, or too large.

View PowerPoint Files Instantly Online – No Install, No Account
Open PPT or PPTX files in your browser with a single drag‑and‑drop. No software, no login, and files are deleted after viewing.


Choosing an Enterprise PDF Viewer: Secure, Multi‑Format, No‑Install Solution
Learn how to pick a secure, multi‑format enterprise PDF viewer, evaluate sharing options, and see a zero‑install browser solution that deletes files after viewing.

How to Open and Visualize XML Files Instantly in a .NET Web App
Step‑by‑step guide to embed a secure, plugin‑free XML viewer in ASP.NET Core, MVC or WebForms – no extra software needed.

Bring Medical Images into Your .NET Portal with the Doconut DICOM Plugin
Explore the Doconut DICOM Plugin for viewing DCM and IMA files, navigating multi-frame images, and adding medical-image previews to .NET portals.

Turn Document Previews into Useful Exports with the Doconut Converter Plugin
Discover how the Doconut Converter Plugin adds document conversion to .NET apps, with practical PDF, Office, image, and export workflow examples.

How to Annotate PDFs with No Installation
Learn how Doconut's Annotation Plugin can add browser-based PDF review tools to a Windows-based .NET application.

Advanced .NET Image Viewer Tutorial for TIFF, SVG, PSD, and Common Image Formats
Plan a Doconut image-viewing workflow for supported creative assets in a Windows-based ASP.NET application.

How Graphic Designers and Photographers Use a .NET Image Viewer for TIFF, SVG, PSD, and Other Formats
Learn how creative teams can use Doconut to preview supported image and design files inside Windows-based .NET portals.

Viewing Documents in the Browser Without Plugins: A Practical Guide
Explore Doconut's plugin-free browser document viewer for Windows-based .NET applications handling PDF, Office, CAD, email, and image files.

Top security concerns when using cloud‑based file converters
Explore cloud file conversion risks including data exposure, retention, malware, access control, and vendor governance for .NET applications.

Step-by-step Tutorial: Developers embedding a secure, plugin‑free document viewer into ASP.NET Core, MVC, or WebForms applications
How to embed the Doconut Viewer SDK in ASP.NET Core, MVC or WebForms: 75 file formats, DOC to PDF conversion, and where the security actually comes from.

How Professionals, Students, and Anyone Can Quickly View PDFs, Word, Excel, PowerPoint, or Images on the Go—No Installation Required: Step by Step
Open PDFs, Office documents, CAD drawings and images in the browser with nothing installed and no account — and know what the size limits actually are.

How to Embed a Plugin-Free Document Viewer in ASP.NET
A step‑by‑step guide for .NET engineers who need to embed Doconut App’s secure, zero‑plugin document viewer into ASP.NET Core, MVC, or WebForms projects.

When to Choose a Desktop PDF Converter Over an Online Service
Compare desktop and server-side PDF conversion with online services for privacy, performance, control, and integration in Windows-based .NET applications.

Online vs. Offline Document Viewers: Performance, Security, and Cost
Compare online and offline document viewers for performance, security, and cost, and learn when to use Doconut.app or Doconut Viewer SDK for .NET applications.

Why Controlled Document Viewing Matters for Sensitive Work
Learn why sensitive document workflows need controlled viewing, access rules, and secure handling, and when to use Doconut.app or Doconut Viewer SDK.

Best Practices for Protecting Sensitive Documents During Online Viewing
Protect sensitive documents during online viewing. Learn best practices for access control, storage, file handling, and when to use Doconut’s .NET Document Viewer SDK.

How to Handle Large PDF Files When Using Online Document Viewers
Learn practical strategies for handling large PDF files with online viewers, and when to consider Doconut Viewer SDK for controlled .NET application workflows.

Using Online PDF Tools for Remote Teams: Collaboration Tips
How remote teams review documents in the browser instead of mailing copies around: what the free viewer does, and where the .NET SDK takes over.

Comparing Free vs. Paid PDF Conversion Services: What You Get
A practical comparison of free and paid PDF conversion tools, and why Doconut App is a secure, plugin-free choice for enterprise .NET developers.

Security Best Practices for File Conversion Using Online PDF Tools
What to check before uploading a document to any free PDF tool, what Doconut.app does with your file, and where the SDK takes over.

Step-by-Step Guide: Validating and Converting PDFs Without Losing Quality
Discover a secure PDF validation and conversion workflow using Doconut App. Learn file preparation, Blazor-friendly integration, PDF conversion, and how to verify high-quality PDF results.

How to Choose the Right PDF Viewer for Your Business Needs
Discover how a secure PDF viewer with a free trial can improve your .NET and Blazor applications while helping protect sensitive business documents.

Top Security Risks When Using Free Online PDF Tools and How to Mitigate Them
The hidden security threats in free online PDF converters and viewers, the practical mitigations, and why a self‑hosted .NET tool is the safer option.

Best practices for compressing PDFs without losing quality
Cross‑platform .NET strategies for PDF conversion and API‑based compression: cut file size hard without letting text, diagrams or scans degrade.

Online vs. Desktop PDF Converters: Which Is Right for You?
Online or desktop PDF conversion: how they differ on security, speed, file size and .NET integration, and why Doconut.app is a viewer, not a converter.

How Secure Are Online PDF Tools? A Deep Dive into Data Privacy
Discover how secure online PDF conversion and OCR tools are, the hidden risks of server‑side processing, and why a cross‑platform .NET API gives data control.

Free vs. Paid PDF Converters: When to Upgrade?
When a free PDF converter stops being enough, and what a cross‑platform .NET conversion API gives you instead: file size, batch automation, and security.

Viewing and Searching Scanned Legal Documents in .NET
Embed a .NET document viewer that opens scanned legal PDFs, ODF files and images in the browser, and searches the ones that carry a text layer.

CAD Viewer for Architecture Applications in .NET
Discover how the Doconut CAD Viewer enables .NET architecture apps to show DWG, DXF, and DGN drawings in the browser with rendering and layer control.

The Hidden Costs of Using Browser‑Based PDF Viewers for Business
Discover how browser‑built PDF viewers silently hurt productivity, security and compliance, and why enterprises need a dedicated, server‑side PDF solution.

Add PDF Annotation and Text Search to .NET Apps
Learn how to add plug‑in‑free PDF annotation and text‑layer search to .NET apps, so reviewers can mark up a document and find a phrase without scrolling.

Beyond Viewing: What a Free PDF Tool Cannot Do for a Product Team
Four capabilities a free PDF viewer will not give an enterprise product team, and which of them Doconut actually sells - plugins included, honestly labelled.

How to Choose a PDF Viewer for Enterprise: 7 Features That Matter
A procurement guide outlining seven features—security, compliance, performance, scalability, .NET embeddability, licensing, support—to choose a PDF viewer.

How to choose a document viewer: what to check
What to check before trusting a document viewer with your file: where it renders, what happens to it afterwards, which extensions open, and the size limit.

Securely Share PDFs Without Uploading to Third‑Party Sites: A Step‑by‑Step Guide for Legal Teams
How legal teams can preview PDFs inside their own .NET portal instead of a third-party site, with the encryption, tokens and audit logging kept where they belong: in your application.

Why Free PDF Viewers Still Put Your Data at Risk: The Hidden Dangers of Online Uploads
What actually happens when you upload a PDF to a free viewer — including this one — and how to decide which documents should never go near one.

The True Cost of 25 MB PDF Limits: How Finance Directors Can Scale Enterprise Workflows
Finance directors learn how 25 MB PDF limits drive hidden operational, compliance and revenue losses, and how a plug‑in‑free viewer can cut those costs.

Universal File Support: Opening Any Document Instantly
No tool opens every format. Doconut.app opens the 70+ extensions that actually reach you — in the browser, free, with no account.

Viewing Complex Engineering Files in Your Browser
Learn how Doconut lets engineers and architects view CAD and DWG files in any browser, eliminating costly software and speeding up project approvals.

Why Security Matters in Online Document Viewing
What Doconut.app does with your file — HTTPS in, nothing kept — and the honest answer about certifications, which is that we hold none.

The Evolution of Document Viewing: From Desktop to Cloud
Explore how document viewing moved from bulky desktop software to flexible cloud-based viewers, offering accessibility, faster loading, and lower costs.

.NET Developers: Add an Online File Preview in 5 Minutes
Learn how .NET and ASP.NET Core developers can add instant online file preview in minutes with Doconut’s document viewer, no Office install required.

Your Files, Anywhere. Universal Access Without Installers
Discover how Doconut’s browser‑based viewer provides universal, installer‑free access to PDFs, Office files and more on any device, boosting productivity.

Why SaaS Platforms Are Moving to Online File Viewing
Discover why SaaS platforms are switching to online file viewing for zero‑install convenience, enhanced security, global access, and scalable engagement.

Doconut: Viewing and Converting Documents in .NET
Doconut is a .NET viewer and converter reading 75 file extensions—PDF, Office, CAD, images—with annotation and text-layer search sold as separate plugins.

Doconut: A complete document viewing solution for the .NET ecosystem
Doconut offers a fast, server‑side .NET document viewer and converter supporting PDF, Office, CAD, images and more, with annotation and search plugins.

Why DoconutApp Opens Your File So Quickly
How DoconutApp keeps online document viewing quick — server-side rendering, first page first, and nothing to install or sign up for.

DoconutApp: The Free Online Viewer Built for Word Documents (DOC & DOCX)
DoconutApp offers a free, instant online viewer for DOC and DOCX files, delivering secure, no‑install previews with full formatting on any device.

DoconutApp: Free Online Spreadsheet Viewer for XLS, XLSX, CSV and ODS
Preview XLS, XLSX, CSV and ODS spreadsheets online with DoconutApp — no installation, no sign-up, and your file deleted when the session ends.

DoconutApp: Free Online Viewer for MPP, VSD, VSDX, and VSDM Files
Use DoconutApp to preview Microsoft Project (MPP) and Visio files (VSD, VSDX, VSDM) online—free, secure, and without installing any software.

Boost Your Workflow with DoconutApp: The Fastest Free Online Excel Viewer
Preview Excel files online instantly with DoconutApp — a fast, secure, installation-free browser viewer for XLS and XLSX documents.

Enhancing Productivity with Doconut.app: The Smart Way to View Documents Online
Discover how Doconut.app boosts productivity with fast, secure, free online document viewing—no downloads, cross‑device access, and easy navigation.

Maximize Your Document Efficiency with Doconut.app
Boost document productivity with Doconut.app’s secure, fast, web‑based viewer—no installations needed, cross‑device access, and intuitive interface for professionals.

Why Doconut.app has seventeen viewers, not one
Explore Doconut.app, the document viewer that supports PDFs, Office files, CAD, images, and eBooks—no download needed, secure, cross‑device ready.

Simplify Document Management with Doconut.app: The Free Online Viewer for All File Types
Discover Doconut.app, a free online viewer supporting PDFs, Word, Excel, CAD and more, offering no‑install document viewing on any device.

Exploring the Unique Benefits of Doconut.app: Your All-in-One Document Viewer
Explore Doconut.app, the free online viewer supporting PDFs, Office, images, CAD and more - no install, no account, and your file deleted after viewing.

Which Doconut.app viewer opens your file
Discover Doconut.app, a free online document viewer supporting PDFs, Office files, images and more—no install, privacy‑focused, works on any device.

Experience Instant Document Access with Doconut.app
Experience instant, secure document viewing online with Doconut.app—no downloads, supports PDFs, Word, Excel, images, and ensures privacy across all devices.

Adding Document Viewing to a .NET Application
Doconut Viewer, the .NET SDK, opens 75 file extensions inside your own app, with optional annotation and text-layer search plugins.

Doconut in a .NET Document Management System
Doconut's .NET viewer opens 75 file extensions, annotates them, and searches the text layer of a PDF — installed from NuGet into ASP.NET, MVC or Blazor.

Explore the Versatility of Document Formats with Doconut.app
Explore Doconut.app, a free online viewer that supports PDFs, CAD, DOC, XLS, PPT and more, offering privacy, no‑install access, and cross‑device ease.

Maximize Your Document Efficiency with Doconut.app's Comprehensive Features
Boost productivity with Doconut.app’s free online viewer—instant multi‑format support, drag‑and‑drop ease, privacy safety, and cross‑device access.

Transform Your Workflow with Doconut.app's Intuitive Document Viewing
Boost productivity with Doconut.app’s free viewer—supports PDFs, Word, Excel, and more, offers a user‑friendly UI, strong privacy, and cross‑device access.

What Doconut.app opens, and what it deliberately does not
Explore Doconut.app, the free online viewer that supports PDFs, DOCs, XLS, PPT and more—no install, secure, fast, and mobile-friendly.

Doconut.app size limits: what fits in each viewer
Discover Doconut.app, a free online viewer for PDFs, Word, Excel, PowerPoint, CAD and images, with privacy, drag‑drop upload and cross‑device access.

View DOC and DOCX Files Online with Doconut.app
View DOC and DOCX files instantly online with Doconut.app—a secure, no‑install Word viewer that preserves formatting and works on any device.

Instantly Preview PowerPoint Presentations Online with Doconut.app
Preview PowerPoint files instantly online with Doconut.app—no software required. Fast browser viewer for PPT and PPTX, perfect for teams and professionals.

View XLS and XLSX spreadsheets online, free
View Excel spreadsheets online instantly with Doconut.app—no installation, full formatting, secure cloud preview for .xls and .xlsx files.

View Your Photoshop PSD Files Online with Doconut.app
Preview layered Photoshop PSD files instantly online with Doconut.app—no installs, secure, fast rendering for designers, marketers, and remote teams.

One Browser Tab That Opens the Files Your Computer Will Not
View PDF, Word, Excel, PowerPoint and OpenOffice files in your browser. No install, no account, and your file deleted when you close it.

Discover What’s New in Doconut – Try the Improved Email Viewer Online
Discover Doconut’s upgraded Email Viewer with enhanced character encoding, multi‑client compatibility and instant online testing—no install needed.

The Future of Document Viewing: Embracing AI-Powered Online Viewers
What AI is adding to document viewers, and what Doconut.app actually does today: renders your file, searches the text layer, and deletes it afterwards.

Faster, Leaner PDF Rendering in the Latest Doconut Release
What the 25.3.0 PDF viewer changed for image-heavy files, and how to check the difference against a document of your own rather than against our numbers.

Experience the Power of Doconut – View Word, ODT, Excel, and More Online
Discover Doconut's online .NET document viewer for instant, accurate viewing of Word, ODT, Excel, PowerPoint, email and image files—no install needed.

Open a Word or ODT File Online, Free - No Office Required
Discover Doconut.app’s free .NET Document Viewer to open Word, DOCX, and ODT files online—no software needed, fast rendering, cross‑platform support.

Open and View ODS Files Online with Doconut’s ODS Viewer
Open an ODS spreadsheet in your browser, free, up to 20 MB. No OpenOffice, no install, no account, and the file is deleted when you finish.

Try Doconut 25.1.0 Today on Doconut.app: Experience Faster and More Accurate Document Viewing! 🚀
Discover Doconut 25.1.0 on Doconut.app – a faster, more accurate online document viewer with enhanced Excel, email, image, PSD, and Visio support.

Explore the Power of Image Viewing with Doconut Online: Try It for Free Today!
Discover Doconut Online, a free browser‑based image viewer supporting JPEG, PNG, TIFF, BMP with zoom, pan and high‑quality rendering for businesses, creatives and educators.

Open an EPUB for Free (and Why MOBI Will Not Open Here)
Read an EPUB in your browser, free, up to 25 MB, with search and printing - and what to do instead when the file you have is a MOBI.

Open an MSG or EML file without Outlook
Open MSG, EML and EMLX files in the browser, up to 10 MB, with the headers and attachments intact and no Outlook installed.

Exciting Updates to Doconut.app: Test and View New File Formats with Ease
What this release fixed in the PSD, Excel, Visio, PowerPoint and Project viewers, and how to check each fix against a file of your own.

Test the Doconut viewer free before you licence it
Explore how Doconut.app lets businesses test a free, secure .NET document viewer with multi‑format support, boosting workflow, collaboration and compliance.

Medical images in the browser: what opens, and what does not
Radiology reports, scanned PDFs and exported images open free at Doconut.app. DICOM does not — here is why, and what to use instead.

Discover the Power of Doconut: Try the .NET Document Viewer Library for Free on Doconut.app! 🎓💻
Try Doconut's free .NET Document Viewer to open PDFs, PPTs, Excel, Visio in the browser—ideal for educators, IT staff, and students needing quick access.

Try the Latest Doconut 24.11.0 – Packed with Powerful New Features! 🚀
What changed in Doconut 24.11.0: fixes to the Visio, PowerPoint, Excel, Email and Project viewers. Try the same engine free on Doconut.app.

Discover Doconut: The Perfect Document Viewer for Research Centers – Try It for Free!
Discover Doconut, the free document viewer supporting SVG, VSDX, PDF and more—ideal for research labs needing secure, cloud‑based access and collaboration.

Review Case Files in the Browser: PDFs, TIFFs and Email
Law firms open multi-page TIFFs, PDFs, DOCX and MSG email in the browser, with nothing to install and the file deleted once it has been read.

Open a TIFF file online, free
View single‑ and multi‑page TIFF files instantly in any browser with Doconut.app—no software install, ideal for healthcare, engineering, publishing.

Simplify Project File Viewing with Doconut.app – Perfect for Every Industry
Open MPP and MPX schedules in the browser, up to 20 MB, with no Microsoft Project licence and nothing to install.

How Design Companies Can Easily View PSD Files with Doconut.app
Learn how design firms can view PSD files online with Doconut.app, improving collaboration, eliminating Photoshop need, and integrating via .NET library.

Try Doconut.app to Effortlessly Handle EML and MSG Email Files
Open EML, MSG and EMLX files in the browser, up to 10 MB, with the headers and attachments intact and no Outlook installed.

Open a DWG Without AutoCAD: CAD Files for Architects
Open DWG, DXF and DGN drawings in a browser, free, up to 10 MB - with layers you can switch off and measurements you can take without a CAD licence.

Top Document Formats Supported by Doconut and How They Can Improve Your Workflow
Learn about the document formats supported by Doconut and how they boost productivity.

Experience the Power of Document Management with Doconut .NET Library on Doconut.app
Open DWG, DGN and DXF drawings in the browser on Doconut.app, free and with no AutoCAD — and see what the .NET SDK behind it does for your own app.

Discover the Power of Viewing AutoCAD Files on Doconut.app
See how Doconut.app lets designers instantly view DWG, DGN, and DXF files in any browser—secure, accurate rendering without extra software.

Effortlessly Manage PowerPoint and OpenOffice Presentations with Doconut .NET Library
Discover Doconut’s .NET library for developers to view, convert and manage PowerPoint (PPT, PPTX) and OpenOffice (ODP) presentations across platforms.

The Advantages of Using Doconut.app for Viewing AutoCAD Files
Discover how Doconut.app lets you view DWG, DGN, and DXF AutoCAD files instantly in any browser, without extra software or licenses.

Experience the Power of Doconut's .NET Document Viewer Online with Doconut.app
Experience Doconut's .NET Document Viewer on Doconut.app – an online, no‑install PDF and multi‑format viewer that lets developers test rendering and search.

Enhancing OpenOffice File Viewing in Doconut.app
Explore Doconut.app’s OpenOffice viewer that instantly displays .odt, .ods, and .odp files with formatting, advanced rendering, and cross‑platform support.

Doconut.app: Your Ultimate Free Online Document Viewer
Doconut.app offers a free online viewer for XLS, XLSX, PPT, PPTX and more. No installation, no sign-up, and your file deleted when you close it.

Tired of Waiting? This Free Online Document Viewer Loads Files Like Lightning!
Doconut.app opens PDFs, Word, Excel, CAD and more in the browser, free and with no account — and this post explains what actually governs the wait.

Frequently Asked Questions about Doconut.app 📄🔍
Learn everything about Doconut.app in this comprehensive FAQ guide. Discover our features, supported formats, privacy policies, and more. Get answers to all your questions about Doconut.app!

From PDFs to PSDs: Viewing Versatility with Doconut.app
Discover the versatility of Doconut.app, the ultimate tool for viewing various formats like PDFs, PSDs, and more. Perfect for designers, office workers, and students!

Is Your Computer Saying "NO" to This File? Doconut.app Says "YES!"
Your machine refuses a file and Doconut.app opens it: 73 extensions in the browser, free, with no account and the upload deleted when you close the tab.

Tired of Waiting? This Free Online Document Viewer Loads Files Like Lightning! 🚀📄
Discover Doconut.app, a free online document viewer that loads files instantly. Say goodbye to long waits and enjoy lightning-fast file viewing! 🔥

Stop Wasting Time Downloading! View Any Document Instantly with This Free Tool
Skip the download-and-install detour: doconut.app renders 70+ extensions in the browser, free, with no account, and deletes the file afterwards.

Struggling with Different File Types? This Free Tool Solves Everything
Struggling with different file types? Discover how doconut.app, a free online document viewer, simplifies handling various file formats. Get access now!

Forget Downloads, Go Online: View Your Documents Anytime, Anywhere with Doconut.app
Doconut.app is a free online viewer for PDF, DOCX, DWG, PPTX and more. No install, no account - and nothing stored, because your file is deleted after you read it.

Discover Doconut.app: Your Ultimate Online Document Viewer
Discover Doconut.app, the free online viewer that instantly opens PDFs, DOCX, PSD, DWG and many other formats on any device, boosting productivity.

The Advantages of Web-Based File Viewing Without Additional Software
Discover how web‑based file viewing eliminates extra software, boosting accessibility, security, and productivity for any device.

Open a CSV file online, free
Open a CSV in the browser, up to 20 MB, free and without an account — and see the delimiter and encoding problems before they bite you.

Doconut.app: Your Ally for Viewing Excel Files with Graphs and More
Open an XLS or XLSX in your browser, free, up to 20 MB. Charts and cell styles render, formula cells show their resolved values, nothing is stored.

Exciting News for PSD Enthusiasts! Discover What's New in Doconut
Discover Doconut's latest PSD viewer upgrade: sharper text, faster performance, vertical text support, and vibrant visuals for flawless design previews.

Unveiling the Enhanced Doconut.app: Revolutionizing Document Management
The redesigned Doconut.app: new interface, Doconut .NET 24.3.2 under it, and the same deal as before — free, no account, your file deleted afterwards.

Discover Doconut: The Premier PDF Viewer for Your Application
The Doconut .NET PDF viewer: server-side rendering inside your own app, an optional annotation plugin, and documents loaded from S3, Azure or a database.

Enhancing Document Viewing Experience with the New Doconut.app
Discover Doconut.app’s new design and performance boost with version 24.3.1, delivering faster loading, cross‑device compatibility, and an intuitive viewer.

Experience a Document Revolution with Our Online PDF Viewer
Discover Doconut.app's free online PDF viewer—no downloads, no sign‑ups, and full cross‑platform support. Instantly open PDFs in any browser with zero hassle.

Opening DWG, DXF and DGN Files From Any AutoCAD Version
Open DWG, DXF and DGN drawings in a browser, free, up to 10 MB - including files saved by AutoCAD versions your own software refuses.

View Adobe and Microsoft Documents without Installing Additional Software with Doconut
Discover how Doconut lets you view PDF, DOCX, PPT, PSD and other Adobe and Microsoft files instantly online, without installing any software.

Welcome to Doconut.app
A new free online document viewer from the makers of the Doconut .NET SDK: 70+ extensions, no account, and your file deleted when you close the tab.

View your HTML files in Doconut.app
Open an HTML or MHTML file as a rendered page, up to 5 MB — and find out why a saved web page arrives missing its images and styling.

Arabic text, email files and big PSDs: what changed
Three things that used to fail on Doconut.app now work: Arabic Word documents, PDFs built in memory, and large PSD and TGA files. Worth retrying your file.

Open the image formats your computer will not preview
ICO, EPS, TGA, WebP, CDR and CMX all show up as blank icons on a normal machine. What each one actually is, and why nothing on your PC will open it.

Open an XLS or XLSX file online, free
Open XLS and XLSX workbooks in your browser, free, and find out why a viewer shows the last number Excel saved instead of recalculating your formulas.

Open a PPT or PPTX file online, free
Open PPT and PPTX decks in your browser, free, and find out why an animated slide arrives with every build stacked on top of itself.

Open a DWG or DXF drawing without AutoCAD
Open DWG, DXF and DGN drawings in your browser without AutoCAD, and find out why xrefs, SHX fonts and proxy objects go missing when a drawing is rendered.

Open a DOC, DOCX or RTF file online, free
Open DOC, DOCX and RTF files in your browser, free, and find out why a Word document rarely looks exactly the way the person who wrote it saw it.

ASP.NET CORE | .NET STANDARD DOCUMENT VIEWER
Discover Doconut's ASP.NET Core and .NET Standard viewer—a native C# component that renders Word, Excel, PowerPoint, PDF and more in browsers, no plugins.

Shrink a PowerPoint deck that is too big to send
A 90 MB deck is usually four photographs and one video. What is taking the space in a PPTX, how to get it back, and which OpenDocument file you have.

Excel says the file format doesn't match the extension
Half the .xls files exported by reporting tools are not Excel files at all. How to tell what you actually have, and what each impostor costs you.

ONLINE WORD DOCUMENT DOC DOCX VIEWER
Discover Doconut.app’s free online Word viewer that instantly displays .doc and .docx files in any browser—no plugins, no installation, fully secure.

Add a document viewer to your own ASP.NET app
You have been opening files here. Putting the same renderer inside your own ASP.NET app changes one thing that matters: where the document goes.