A poster is any large piece of printed paper designed to be attached to a wall or vertical surface. Typically posters include both textual and graphic elements, although a poster may be either wholly graphical or wholly textual. Posters are designed to be both eye-catching and convey information. Posters may be used for many purposes, and they are a frequent tool of advertisers (particularly of events, musicians and films), propagandists, protestors and other groups trying to communicate a message. Posters are also used for reproductions of artwork, particularly famous works. Another type of poster are educational posters, which may be about a particular subject for educational purposes. Related to these are academic or conference are generally low-cost compared to original artwork. Many people also collect posters, and some famous posters have themselves become quite valuable, collectors and vintage posters are usually framed and matted. The most conventional size for graphical posters tends to be around 24 by 36 inches, though posters may be nearly any size. Much smaller printed advertisements are typically known as handbills or flyers.

Poster Printing

Many printing techniques are used to produce posters. While most posters are mass-produced, posters may also be printed by hand or in limited editions. Most posters are printed on one side and left blank on the back, the better for affixing to a wall or other surface. Pin-up sized posters are usually printed on A3 Standard Silk paper in full colour.

It is possible to use poster creation software to print large posters on standard home or office printers.

Type of Posters

1. Propaganda and political posters

During the First and Second World Wars, recruiting posters became extremely common, and many of them have persisted in the national consciousness, such as the "Lord Kitchener Wants You" posters from the United Kingdom, the "Uncle Sam wants you" posters from the United States, or the "Loose Lips Sink Ships" posters that warned of foreign spies. Posters during wartime were also used for propaganda purposes, persuasion, and motivation, such as the famous Rosie the Riveter posters which exhorted women workers during World War II that "We can do it!". The Soviet Union also produced a plethora of propaganda posters, some of which became iconic representations of the Great Patriotic War. During the democratic revolutions of 1989 in Central and Eastern Europe the poster was very important weapon in the hand of the opposition. Brave printed and hand-made political posters appeared on the Berlin Wall, on the statue of St. Wenseslas in Prague and around the unmarked grave of Imre Nagy in Budapest and the role of them was indispensable for the democratic change.

2. Advertising Posters

Many posters, particularly early posters, were used for advertising products. Posters continue to be used for this purpose, with posters advertising films, music (both concerts and recorded albums) and comic books being particularly notable examples.

3. Film Posters (or Movie Posters)

The film industry quickly discovered that vibrantly coloured posters were an easy way to sell their pictures. Today, posters are produced for most major films, and the collection of movie posters has become a major hobby. The most valuable poster in the world, of which there is only 1 known copy, is the 1931 stone litho Frankenstein 6-sheet.

4. Comic Book Posters

The resurgence of comic book popularity in the 1960s led to the mass production of comic book posters in the 1970s and onward. These posters typically feature popular characters in a variety of action poses. The fact that comic books are a niche market means that a given poster usually has a smaller printing run than other genres of poster. Therefore, older posters may be quite sought after by collectors. Promotional posters are usually distributed folded, whereas retail posters intended for home decoration are rolled.

5. Event Posters

Posters advertising events have become common. Any sort of public event, from a rally to a play, may be advertised with posters; a few types of events have become notable for their poster advertisements.

6. Concert Posters

Many concerts, particularly rock concerts, have custom-designed posters that are used for advertisement of the event. These often become collectors items as well.

7. Educational Posters

Posters are used in academia to promote and explain research work. They are typically shown during conferences, either as a complement to a talk or scientific paper, or as a publication. They are of lesser importance than actual articles, but they can be a good introduction to a new piece of research before the paper is published. Poster presentations are often not peer-reviewed, but can instead be submitted, meaning that as many as can fit will be accepted.

8. Boxing Posters

Boxing Posters were used in and around the actual venue to advertise the forthcoming fight, date, ticket prices, and usually consisted of pictures of each boxer. Boxing Posters vary in size and vibrancy, but are not usually smaller than 18x22 inches. In the early days few boxing posters survived the actual event and thus they are indeed very collectible and scarce.

9. Classroom Posters

Most classrooms in North American schools have posters on the walls. There are several types of these posters:

• Books on poster, in which entire works of literature are legibly printed onto single posters.
• Motivational posters, similar to those found in offices or specific to the class subject matter.
• Quick reference posters: In elementary schools, these usually include first-language vocabulary charts (numbers, colours, weather, etc.) and multiplication tables. In secondary and post-secondary schools, they are more likely to include second-language vocabulary charts, the standard periodic table and related graphs, and laboratory safety protocols. A world map and one or more regional maps are common at all levels.
• Advertising posters for products used or discussed in the class (e.g. movie posters in a film class).
• Pseudo-advertising posters for sports, works of classic literature, etc.
• Posters giving more detailed information on a subject, usually containing paragraph-form text, in relatively small print.

The latter two types are sometimes prepared by students as part of an assignment, but most posters are usually store-bought.

10. Band/Music Posters

Posters that showcase a person's favorite artist or music group are popular in teenager's bedrooms, as well as in college dorm rooms and apartments. Many posters have pictures of popular rock bands and artists.

11. Vintage Posters

Vintage Poster Restoration/Conservation

The backing of posters with fabric dates back to 19th century France, where posters were occasionally glued to linen for reinforcement. This provided some protection, but with the passage of time the paper continued to become brittle and was frequently torn by stress. Modern backing techniques have eliminated this problem by using an acid free paper between the poster and the fabric. The adhesive used is wheat paste treated to inhibit mold growth.

Why fabric-back a poster? The principal reason is to provide support for the paper. It also enables the conservator to flatten the folds and to more easily make repairs. Fabric backing also eliminates the waviness that can occur when the poster is framed.

Reversibility is a concept that is important in all conservation work, because today's curators and collectors are only temporary custodians of a cultural object (the poster) that will have continuing and timeless interest for future collectors. We strive to make certain that materials and techniques that are applied to the poster are not harmful over time and are reversible to bring it back to the state in which we found it.

Restoration can dramatically improve the appearance of a poster. Damage caused by clear adhesive tape, residual stains, water marks and dirt can be easily repaired; combining this with the replacement of lost paper can bring the poster back to virtually its original state.

12. Cheesecake Posters

Cheesecake posters, or "Pinups posters," are pictures of attractive women designed to be displayed, first coming to popularity in the 1920s. The popularity of sexy Pin-up girl posters has been erratic in recent decades. Pin-ups such as Betty Grable and Jane Russell were highly popular with soldiers during World War II but much less so during the Vietnam War. The late 1970s and into the beginning of the 1980s were boom years for large posters of television actresses, especially Farrah Fawcett and Cheryl Tiegs.

13. Affirmation Posters

This refers to decorative posters that are meant to be motivational and inspirational. One popular series has a black background, a scene from nature, and a word like "Leadership" or "Opportunity." One version (usually framed and matted) uses a two-image hologram which changes as the viewer walks past.

14. Fanposter