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Open files, right in your browser

Open and inspect difficult email, database, data, map, document, image, developer, finance, and 3D model files directly in your browser without installing desktop software.

Drop a file

Read on this device. Nothing is uploaded, logged, or stored on a server.

or drag from your desktop
.CSV.TSV.SQLITE.DB.SQLITE3.EML.VCF.VCARD.JSONL.NDJSON.MSG.PARQUET.PARQ.MBOX.HEIC.HEIF.DBF.HAR.GPX.KML.KMZ.GEOJSON.QBO.OFX.QFX.QIF.MDB.ACCDB.CBR.CBZ.XPS.OXPS.IPYNB.FITS.FTS

Local File Processing

Supported contents are processed in your browser.

No Server File Upload

Standard viewing requires zero server uploads.

No Account Required

Use supported viewers without creating an account.

Built for Sensitive Files

Designed for personal, business & technical files.

See FileViewerHub in Action

Open a sample file to preview how FileViewerHub displays different file types before choosing your own.

Try a sample:
sample-email.emlEMLSample Preview
Open EML Viewer
From: Alex Morgan <alex@example.com>
Aug 28, 2026 · 10:14 AM
To: team@example.com
Subject: Project Status & Q3 Milestone Update

Hi Team,

Here is the latest progress report on our browser-based file inspection modules. All performance benchmarks are green and memory consumption during streaming decoders has dropped by 38%.

Please review the attached quarterly summary before tomorrow morning's product synchronization meeting.

2 Attachments:quarterly_summary.pdf (1.2 MB)assets_spec.json (48 KB)

Three Steps, No Friction

01

Choose a File

Drop a supported file or select one from your device.

02

Open It

FileViewerHub loads the appropriate browser-based viewer.

03

Work With It

Search, inspect, extract, export, or sanitize when supported.

Built for Difficult File Formats

Open specialized files without installing the software normally required to work with them.

Online email viewer displaying message headers, body, and attachments in browserOnline email viewer displaying message headers, body, and attachments in browser
.MSG · .EML · .MBOX
Email & Mailboxes

Open Email Files Without Outlook

Read supported Outlook and mailbox formats, inspect message details, search email archives, and work with attachments directly in your browser.

SQLite and database viewer showing tables, schema, and interactive SQL queriesSQLite and database viewer showing tables, schema, and interactive SQL queries
.SQLITE · .MDB · .DBF · .PARQUET · .CSV
Database & Structured Data

Explore Databases in Your Browser

Browse supported database tables, schemas, records, and structured data without installing dedicated database software.

Technical file viewer hub for inspecting maps, GPS tracks, and diagnostic filesTechnical file viewer hub for inspecting maps, GPS tracks, and diagnostic files
.GPX · .KML · .KMZ · .GEOJSON
Maps & GPS

Preview Maps and GPS Data

View supported GPS routes, tracks, geographic layers, and map data directly in your browser.

File Format Guides

Practical guides for opening, troubleshooting, and working with difficult file formats.

How-toDeveloper Tools

How to Open a PAK File (Game Archives Explained)

A PAK file is a game archive, but there is no universal PAK format. Here is how to identify which game your PAK came from and open it with the right tool.

Updated September 2, 2026Developer Tools
Read guide
ExplainerImage Files

What Is a CR2 File? Canon RAW Explained

CR2 is Canon's RAW photo format - unprocessed sensor data from a Canon DSLR. Here is what CR2 files are, how they differ from CR3, and how to convert them to JPG.

Updated September 2, 2026.cr2
Read guide
ExplainerImage Files

What Is a DNG File? And Do You Need Adobe's Converter?

DNG is Adobe's open RAW photo format - a universal digital negative. Here is what DNG files are, how they compare to CR2 and NEF, and when you need Adobe's converter.

Updated September 2, 2026.dng
Read guide

Frequently Asked Questions

Stop the Software Struggle.

Open a supported file without installing another app.