The free printable baby blanket crochet patterns PDF you're looking at is the Lullaby Granny Square Baby Blanket, a 3-page US Letter pattern designed by Marilyn Losee. It yields a blanket measuring approximately 31" / 81.5 cm wide by 40" / 101.5 cm long.
Inside the 3-page pattern PDF
The pattern calls for a US J-10 (6mm) hook and uses chain, double crochet, half double crochet, slip stitch, and treble crochet. You'll make 42 squares total—14 each of three variations—using the picot stitch for the border. An assembly diagram shows how to arrange the squares before whipstitching them together.
Printing and working the pattern
Print the PDF at actual size on US Letter paper. The pattern includes a gauge of 22 stitches per 6" / 15cm in pattern stitch, so check your tension before starting. After assembling the squares, work the two border rounds and finish by weaving in ends and blocking gently if desired.
