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How to Use a Projector to Paint a Mural?

How to Use a Projector to Paint a Mural?

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Are you trying to recreate a larger version of an image on a wall surface? It can be hard to keep the dimensions accurate. 

Many artists make use of grid lines, but they are time-consuming. 

You can use projectors to create your mural on a large and accurate scale. They save time and make your work easier. 

Murals can be decorative, advertising, or insightful. They bring life to the most boring rooms or walls. 

With projectors, you don’t even have to be a professional. You can easily project and paint a masterpiece on your walls and ceilings. 

This article details how to use a projector to paint a mural. It will guide amateur artists on how to achieve the best result.

Let’s get right to it. 

Types of Projectors to Use

There are many kinds of projectors for painting murals. They are grouped into two based on how they work:

  • Opaque projectors
  • Digital projectors

1. Opaque (Overhead) Projectors

Artograph Super Prism Opaque Art Projector with 2 Lenses for Image Reduction and Enlargement  (Not Digital)

Click image for more info

These include overhead projectors, slide projectors, and most DIY projectors out there. They have been in use long before digital projectors.

These projectors cannot project images from digital sources. The image to be projected has to be sketched or printed on a transparent sheet. 

How do opaque projectors work?

They shine a bright light onto the transparency sheet or picture. After this, they use various prisms and lenses to enlarge and project the reflection.

2. Digital Projectors

Native 1080P Video Projector - Gzunelic 8000 Lumens Home Theater LED Projector, ±50° 4D Keystone Correction, X/Y Zoom, 10000:1 Contrast, LCD Full HD Proyector Ideal for Home

Click image for more info

These projectors project media from digital sources like computers, DVD players, streaming sticks, USBs, etc. 

They are convenient for creating murals because they come in small sizes. A small projector can be easily propped on a rotating arm and angled towards any surface. 

LED projectors are highly recommended for painting murals. They are brighter than lamp projectors and project clearer images. 

This article focuses on opaque projectors. However, the methods described also apply to digital projectors.

Steps in Painting a Mural with a Projector

Preparation and Materials

acrylic color for painting mural

It is good to obtain and arrange your tools and equipment before you start your painting. Keep them close to you for quick and easy access. 

Here are the materials you would need:

  • A projector
  • Tripod stand
  • Two transparent sheets for making copies of the image you wish to draw. For digital projectors, get two digital copies of your image in a USB flash drive. 
  • A pencil for tracing your image onto the wall
  • An eraser for correcting pencil mistakes
  • A drop cloth or nylon sheet: to avoid staining on the floor while painting
  • Acrylic paint
  • Paintbrushes
  • Color mixing plates
  • Wet napkin or towel: for correcting mistakes made while working with color

NB: The two copies of your image have to be one colored and one monochrome image. 

Tracing the Image

a muralist tracing on the wall

Step 1: Wipe the wall thoroughly with a wet napkin to get rid of dust or grease, and leave it to dry. 

Step 2: You can apply a fresh coat of paint or primer to the wall before you begin to paint (especially if the background of the mural is meant to be a different color).

Step 3: Make two copies of your desired image: a monochrome image for tracing the outline onto the wall, and a colored image to use as reference when applying paint to your mural.  

Step 4: Place your projector on the tripod at a distance you are comfortable with. 

You are making a large painting, so consider placing it far enough to cast a large image on the wall. 

Step 5: Place the black and white image on the projector and turn it on. 

an overhead projector turned on

Arrange it to fit perfectly on the projector platform so it doesn’t slip off in the process. 

Step 6: Adjust the projector till the image is straight and well-aligned on the wall. A slanted projection would mess up the result of your mural. 

Step 7: Zoom the image in and out to attain your desired size. Some digital projectors also offer zoom features so this should be easy.

Step 8: Note the projection distance and percentage zoom being used. You will need it for accuracy if the mural takes a long time to finish.  

Be careful not to tamper with your arrangement and mess up your work. 

Step 9: Use your pencil to carefully trace the projected image onto the wall. 

Note: Make sure your eraser is close by to correct any mistake at the tracing stage. 

Painting your Mural

How to Paint a Mural - from Start to Finish!

Step 1: After tracing the image, remove the black and white copy and replace it with the colored copy. 

You can choose to use it as a reference without using the projector. That’s a bold move, but it is still okay. 

Step 2: Spread the drop cloth or nylon sheet on the floor directly in front of the wall you intend to paint on. This will help you avoid staining the floor with paint droplets. 

Step 3: Pour out your paint onto the plates and use the paintbrush to mix any color if needed. 

Step 4: Carefully apply the paint where each color appears on the projected image. 

Step 5: Dip the tip of the brush in black paint and use it to outline sections of the painting to give it a more detailed look. 

Note: Keep a wet napkin or towel close, so you can immediately wipe off any mistake you make. 


  • Use different brushes for different colors. This will save the time you would have used to rinse each paint off before applying another. 
  • If you are worried about smearing the wrong paint on the wrong section, you can wait for the paint to dry after painting each section. 
  • Disposable color plates are ideal. You can conveniently get rid of them after painting, instead of washing to reuse another time. 
  • Turn the projector off and on intermittently, to check for any mistakes or omissions. 
  • A darker room makes the projected image more visible and easier to trace. It is best to pull the curtains closed and reduce external lighting. 

Advantages of Painting a Mural with a Projector

a person painting on a traced line

Are you wondering why you should go through the trouble of buying and setting up a projector? Here are a few benefits to be gotten:

  • Projectors make it easier to work close to a big canvas or platform and still maintain proportion. 
  • They save you time and energy.
  • Projectors greatly reduce the chances of you making a mistake with your mural. 
  • Projectors help you map out your design, incorporating the unique characteristics of the wall or platform before you even start painting.  
  • They give you better straight lines and angles than freehand drawing. 
  • You can easily incorporate extra detail where you want it by projecting that extra on the exact spot you want it. 


Do muralists use projectors?

Yes, they do. In the art community, projectors are widely used to recreate art on a larger scale. 

The subject still causes some controversy because some people see it as cheating. They believe that original drawings should be made freely by hand.

However, art is expression and people should express their talents in ways that they can. Projectors are good for large murals, and if you need one, go for it. 


a women painting mural on the wall

When painting a mural, projectors help you get almost everything right. They let you achieve finer detail and the best results.

If your mural is to be painted outdoors, you need to find out how to get a mural permit in your state. The laws vary for different states.

There’s always that one image you are obsessed with and would love to incorporate into your space. Well, get a projector and start painting. 

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