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This page describes some of the different dialog boxes in Opera.
| Dialog | Appears |
|---|---|
| Start-up dialog | On start-up (See Start and Exit preferences) |
| Sessions | On the menu |
| Customize toolbars | Found under |
| Links | On the menu |
| Manage bookmarks | On the menu |
| Manage contacts | On the menu |
| Manage notes | On the menu |
| Manage transfers | On the menu |
| Manage history | On the menu |
| Delete private data | On the menu |
| Register Opera | On the menu |
| Download dialog | When downloading a file |
| Upload warning | When a form tries to steal a local file |
| Delete message | The first time you delete a mail |
| Cookie dialog | When receiving a cookie that needs attention |
| Certificate warning | When a server sends an invalid certificate |
The start-up dialog appears when you start Opera and lets you choose which pages you want to start with.
Tip: Try starting with no pages if you have problems starting Opera.
When you have multiple Web pages open in Opera, you can save them to disk as a "session". This allows you to later load the session file, on startup or in the middle of another session, to get the pages back.
This dialog helps you to delete information about your browsing activities, but be sure you know what you are doing.
Warning: After deleting private data you may have to re-enter various passwords, set up preferences on Web sites again, and type in full addresses in the Address field since auto-complete data is lost.
This dialog shows you all the toolbar buttons available in Opera, so you can drag them to anywhere you want in the user interface.
If you have removed some buttons to conserve screen space, use this dialog to get them back.
Large dialogs with easily accessible buttons exist to manage the contents of all the default panels; Links, Bookmarks, Contacts, Notes, Mail, Transfers, and History.
Note in particular:
After you have bought Opera, you will receive an e-mail with registration information. Enter this information in the registration dialog to complete the registration and remove the ad banner.
Learn more about registering Opera
The download dialog appears when you download a file.
Click to save the file in the Download directory and execute it when it has been transferred.
Click to choose a folder to save the file. After the file has been transferred, execute it by double-clicking in the Transfer panel.
Note: Use virus-protection software before executing downloaded files.
Some sites offer file uploading as part of their service. Normally, you click and select which file you want to upload from your computer.
Warning: A form can be preset to upload private files from your computer. To prevent forms from stealing your files, Opera will always warn you if a filename is preset in an upload form.
When you deleted a message, it is not actually deleted, but moved to the Trash folder.
To get back a deleted message, open the Trash folder and click the Undelete button.
To delete a message permanently, delete it from the Trash folder. To delete all messages in Trash, right-click the Mail panel and select "Empty trash".
A cookie is a small file that a Web site stores on your computer to remember things about you.
Cookies are intended for practical uses like Web site log-ins, preferences and shopping carts. However some servers (like ad servers) can abuse cookies to track your browsing habits.
When Opera displays a cookie dialog, accept the cookie if it seems well-intended. Otherwise refuse it.
Cookies trying to do intrusive things like tracing your browsing across a national domain (like .no) will be automatically refused.
Learn more about privacy and cookies
Certificates are used to verify that a Web site is secure to use. Most of the time certificates are fully valid and you can proceed safely with your business.
If there is something questionable about a certificate, a warning dialog will be displayed. You may choose to proceed, but full security cannot be guaranteed at this point.
Certificates like credit cards have an expiry date, and must be renewed on a regular basis by the people maintaining the site.
Accepting an expired certificate does not necessarily reduce security, however take into consideration which site you are visiting and how long since the certificate expired.
A certificate is issued by an authority for a single site to use, and sites cannot borrow certificates from each other as this invalidates the whole concept of certificates.
Accepting a certificate belonging to another site is not recommended.
Certificates are signed by an authority. For example, the secure version of the University of Oslo Web site is authorized by the Thawte organization.
If the signer of a certificate is not found in your list of authorities, you should not accept the certificate unless you have a confident relation with the people running the site.
Some certificates are self-signed, that is, signed by the people running the site, and not an authority. Trusting a self-signed certificate from for example your employer can be considered as safe.
If you know that the signer can be trusted, and you want all sites using this signer to be considered as safe, install the certificate to add the signer to your list of authorities.
Tip: To see your list of Authorities, click in Security preferences.
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