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Information for Writing PDF417 and MicroPDF417 Barcodes with LEADTOOLS
 

PDF417

PDF417 is a multi-row barcode symbology with high storage capacity and error-correction capabilities. It can be read by linear barcode readers, laser scanners and 2d barcode scanners. PDF417 barcodes can store 1,108 bytes, 1,850 text characters, or 2,710 digits. A barcode is made up of 3 to 90 rows stacked into columns.

Each row consists of:

  • Leading quiet zone (the required minimum amount of white space before the barcode begins)
  • A start pattern
  • A"row left" codeword
  • 1-30 data codewords
  • A"row right" codeword
  • A stop pattern
  • Trailing quiet zone

Depending on the encoding scheme a codeword can contain:

  • 1.2 bytes when using Binary Encoding
  • 2 characters when using Text Encoding
  • 2.9 digits when using Numeric Encoding

MicroPDF417

MicroPDF47 is derived closely from the PDF417 specifications. It is designed for applications that require improved area efficiency without the maximum data capacity of PDF417. As a result it has a limited number symbol sizes with fixed Error Correction for each symbol size.

The following tables contain information for writing Micro PDF417 barcodes:

# of Columns #of Rows
Total # of Codewords
# of Error Correction Codewords
% of Error Correction Codewords

# of Non- Error Correction Codewords

# of Codewords for data
Max Data Bytes
Max Alpha Characters
Max Digits
1
11
11
7
64
4
3
3
6
8
1
14
14
7
50
7
6
7
12
17
1
17
17
7
41
10
9
10
18
26
1
20
20
8
40
12
11
13
22
32
1
24
24
8
33
16
15
18
30
44
1
28
28
8
29
20
19
22
38
55
2
8
16
8
50
8
7
8
14
20
2
11
22
9
41
13
12
14
24
35
2
14
28
9
32
19
18
21
36
52
2
17
34
10
29
24
23
27
46
67
2
20
40
11
28
29
28
33
56
82
2
23
46
13
28
33
32
38
64
93
2
26
52
15
29
37
36
43
72
105
3
6
18
12
67
6
5
6
10
14
3
8
24
14
58
10
9
10
18
26
3
10
30
16
53
14
13
15
26
38
3
12
36
18
50
18
17
20
34
49
3
15
45
21
47
24
23
27
46
67
3
20
60
26
43
34
33
39
66
96
3
26
78
32
41
46
45
54
90
132
3
32
96
38
40
58
57
68
114
167
3
38
114
44
39
70
69
82
138
202
3
44
132
50
38
82
81
97
162
237
4
4
16
8
50
8
7
8
14
20
4
6
24
12
50
12
11
13
22
32
4
8
32
14
44
18
17
20
34
49
4
10
40
16
40
24
23
27
46
67
4
12
48
18
38
30
29
34
58
85
4
15
60
21
35
39
38
45
76
111
4
20
80
26
33
54
53
63
106
155
4
26
104
32
31
72
71
85
142
208
4
32
128
38
30
90
89
106
178
261
4
38
152
44
29
108
107
128
214
313
4
44
176
50
28
126
125
150
250
366
 

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