Updated : Corrected the web-layer definitions and replaced stale market and directory links with publisher-verified starting points.
The deep web is content that search engines do not normally index, such as your private email or an account dashboard. The dark web includes services reached through special networks such as Tor. You do not need Tor to open your email, and a Tor onion site is not automatically illegal or trustworthy.
Deep web, dark web and ordinary websites
| Term | Example | How you normally reach it |
|---|---|---|
| Public, indexed web | A public news article | A normal browser or search result |
| Deep web | Your private cloud files, email or library account | The service’s website and authorized sign-in |
| Tor onion service | A publisher’s onion version of its site | Tor Browser and the verified onion address |
A site being absent from Google or Bing does not prove it is a dark-web site. It may be private, newly published, blocked from indexing or simply not discovered.
Start with the organization, not a random directory
Onion addresses are difficult to recognize, and copied lists often outlive the sites they describe. A familiar page design is easy to imitate. Start from the organization’s regular official website and use the onion address it publishes.
| Starting point | What to look for |
|---|---|
| Tor Project’s onion-service guide | How onion services and the browser’s onion indicators work |
| ProPublica’s official privacy and terms page | The publisher’s own information about its onion service |
| SecureDrop’s official directory | News organizations that publish their own secure-submission instructions |
These are official starting pages, not a guarantee that every linked service is reachable at all times. Sensitive submissions need the receiving organization’s current instructions; installing Tor alone does not make any workflow anonymous.
How to open a verified onion service
- Get a supported version of Tor Browser from the Tor Project’s official download page.
- Open the browser and connect to Tor.
- Visit the organization’s official website and find its published onion address.
- If the site offers an .onion available prompt, check the site you are on before following it.
- Bookmark the verified address so you do not have to rely on a search result or copied list next time.
Current version-3 onion addresses have 56 letters and numbers before .onion. Old 16-character onion links are obsolete. The Tor troubleshooting guide explains what to check when an address will not load.
Why a directory or onion icon is not enough
An onion connection can protect how you reach a service, but it does not prove the operator is honest. A directory can contain mistakes, look-alike links or dead addresses. Treat claims about stolen accounts, guaranteed anonymity or unusually cheap goods as reasons to stop, not evidence that a site is reliable.
Keep Tor Browser updated and avoid adding extensions or running downloaded files you do not trust. Signing in with an identifying account or sending personal details can identify you even through Tor. Our software-download checks also help you avoid fake browser installers.
What if your goal is ordinary research?
For a paper, archive or private document, start with the institution’s catalogue and your normal authorized account. Those resources are often part of the deep web without being onion services. Choosing the right source is more useful than looking for a supposed single gateway to everything hidden online.