Passport is considered to be a document of identification and citizenship in a country. The passport services or offices of various countries are entrusted with the job of issuance, renewal or cancellation of passports of their citizens. A citizen of a country can apply for the issuance of a passport by filling up an application form that can be obtained from the official websites of the passport offices or services. One can even go in person to the offices to collect the application form. The application form should be accompanied with the requisite valid documents. The issuance of a passport takes sometime because all the information supplied by an applicant is verified. 

The process of renewal of passport varies with each country and one needs to run a check on the rules governing it. So let us quickly surf through the procedures followed in a few countries:

1. America or U.S. – for renewing the passport in America, one needs to avail the DS-82 form and fill it up to be submitted. One can even choose to mail it but the renewed passport can be mailed back to only American and Canadian addresses. The form needs to be filled up very carefully after reading all the instructions. The US consulates and embassies can help in the renewal of passport for the citizens who live outside America.
2. U.K. – The renewal of passport for the British citizen is pretty simple and all the information is available on the official site of the Passport services. The citizens ho live outside UK can contact their embassies or consulates for he renewal process. It generally takes more than 4 weeks for the renewed passport to be delivered to the applicant.
3. Philippine- The Department of Foreign Affairs looks after the renewal of passport in Philippines. One needs to submit photocopy of the current passport and also colored photos. The online address for the renewal of passport is http://www.dfa.gov.ph/form/app/index.htm.   
4. Canada : The renewal of passport for the Canadian citizens is possible without even having to submit the citizenship documents once again. All Canadian citizens who have a valid passport for the last 5 years can apply for a renewal. Once should see to it that the passport was issued in Canada itself and that it was issued under the same name. One photograph is also to be submitted.

Renewal of a passport is generally required when the current passport expires, i.e. the period for which it was issued expires. One needs to renew the passport if one is a frequent traveler and needs to visit other countries for business or tour.  The renewal process of passport varies with the country and one needs to carefully go through all the rules before applying for the renewal. There are some standard rules that are followed for the renewal of passports in all the countries. The official sites, embassies and consulates needs to be contacted for any type of information on the renewal. They are the best sources from where you can get all the detailed information about passport renewal.