Knit increase and purl increase

I am going to show you two basic methods that I usually use to make an increase in knitting.

The basic increasing of stitches can be done by working either two knit stitches into one knit stitch (knit increase) or two purl stitches into one purl stitch (purl increase). That meant we use one stitch to make two stitches. Both methods will forms a visible bar. There for, these methods also known as "bar increase".

Knit increase also called "knit front and back (Kfb)" and purl increase is called "purl front and back (Pfb)". These are default methods of increasing. If the pattern does not mention any specific increasing method then we can use these default increase methods.

Usually, knit increase to be done on the knit side and  purl increase to be done on the purl side.

Knit front and back (Kfb)

1.) Insert your right needle to the next stitch on the left needle from front to back.

2.) Knit it as usual but don't slip the stitch off the left needle.

3.) Then, insert your right needle into the back loop of the same stitch from front to back.

4.) Now, knit it as usual and slip off the left needle. Continue your knitting and you will see the result after a few rows.

Purl front and back (Pfb)

1.) Insert your right needle to the next stitch on your left needle from back to front.

2.) Purl it as you make a purl stitch but don't slip the stitch off the left needle.

3.) Then, insert your needle into the back loop of the same stitch from back to front.

4.) Now, purl it as usual and slip it off the left needle. Continue your knitting and you will see the result after a few rows.

Here show you the result of a knitting piece which I have done by the method of "knit front and back"- (kfb) at the knit side. The photos shown is the knit side and the purl side of my work.

Can you see the difference? There are several obvious bars where the new stitches were made on the knit side, whereas they are much less obvious on the purl side.