Open .DB files online

Q: How do I open a .db file online?

Drag the `.db` onto the page (or click to browse, or paste a URL). The database opens in the SQLite viewer — every user table as a grid with its CREATE statement, up to 1,000 rows per table, and a per-table CSV download. The file is decoded entirely in your browser and never uploaded.

A .db file is usually a SQLite database — the world's most deployed database engine, embedded in every phone, browser, and countless apps. Drop it on the page and ZipTool opens it entirely in your browser: every user table renders as a grid with its CREATE statement folded openable above the rows, values show in place (SQL NULL styled apart, binary blobs as size placeholders), and each table exports as CSV. Nothing is uploaded — the engine is SQLite compiled to WebAssembly, running in your tab.

One honest caveat up front: .db is a generic extension. ZipTool checks the file's actual 16-byte SQLite format 3 header, so a Thumbs.db or an application's proprietary .db refuses with a clear message instead of garbage — and a real SQLite file opens wherever it came from: an Android app's export, a browser's profile data, a developer's side project.

What is a `.db` file?

SQLite is a public-domain relational database that stores the entire database — schema, tables, indexes, rows — in one cross-platform file. There is no server: applications link the library and read the file directly, which is why .db files are everywhere from messaging backups to flight recorders. The file starts with the 16-byte header SQLite format 3\0 and is organized into pages (B-trees for tables and indexes), making it compact and randomly accessible at once.

MIME type: application/vnd.sqlite3 (registered 2023; older tools send application/x-sqlite3). The .db extension itself carries no guarantee — it is used by SQLite, by OLE compound files like Windows Thumbs.db, and by various application-specific formats, which is why content detection matters more than the name.

Mobile app data exports and backups (WhatsApp, Signal, iOS apps)
Browser and application profile data
Embedded datasets shipped with software and games
Developer databases inspected without installing the sqlite3 CLI

How to open a `.db` online

Open ZipTool in a new tab, then drop your .db onto the page — or click to browse for it, or paste a URL. The file opens in the SQLite table viewer, one grid per table with its schema, read entirely on your device.

Drag your .db onto the page — or click to browse, or paste a URL.
It opens immediately in the SQLite table viewer, one grid per table with its schema. No install, no sign-up.
Read, search, or copy it. Your file never leaves your browser.

Open `.db` without uploading

Most "open db online" sites work by uploading your file to a server and processing it there. ZipTool does the opposite: it loads its parser once, then reads your .db locally in the browser tab. The contents stay on your device.

You can prove that in seconds. Open the page, press F12 for DevTools, switch to the Network tab, and open your file — no request carrying the file's contents is sent. You can also turn off Wi-Fi after the page loads and the file still opens. See security and privacy for the full picture.

Frequently asked questions

How do I open a .db file online?

Drag the .db onto the page (or click to browse, or paste a URL). The database opens in the SQLite viewer — every user table as a grid with its CREATE statement, up to 1,000 rows per table, and a per-table CSV download. The file is decoded entirely in your browser and never uploaded.

Can I view a .db without uploading it?

Yes. The SQLite engine runs as WebAssembly inside your browser tab — the database never leaves your machine, which matters because databases are usually full of someone's real data. Confirm it with DevTools (F12, Network tab): no request carries your file.

Does it show every row and column?

Every column, and the first 1,000 rows of each table (stated right in the viewer, with a CSV export of exactly what is shown). Very long text values are trimmed for display at 512 characters, and binary BLOB values show as a size placeholder rather than their raw bytes.

Can I run SQL queries?

Not in this viewer — it is a reader: browsing tables, inspecting the schema, and exporting CSV. The engine under it is real SQLite compiled to WebAssembly, so interactive queries are a genuine possibility, but nothing promises them today.

Why does my .db file fail to open?

The most common cause: the file is not actually SQLite. The .db extension is used by many formats — Windows Thumbs.db is an OLE compound file, and plenty of applications ship their own .db data. ZipTool checks the 16-byte SQLite format 3 header and says so honestly if it does not match. An encrypted or corrupt database also refuses with its own message.