Sequential Numbering Software and Variable Data Printing (VDP)

Numerador Custombit is a professional sequential numbering and Variable Data Printing (VDP) editor built for print shops and production environments. It combines a powerful WYSIWYG layout editor with advanced variable-data controls, enabling accurate output of sequential numbers, variable text, variable images, QR codes, and barcode labels from a single workflow.

Numerador Custombit: Sequential Numbering and Variable Data Printing Software

Sequential Numbering Module

Numerador automates sequential numbering on receipts, invoices, event tickets, raffle stubs, serial numbers, ballots, ID cards, and any printed document requiring consecutive numbering.

The software works efficiently with pre-printed forms, using a background image as a visual reference for positioning where the numbers will be printed. It requires minimal system resources, delivering precise and reliable numbering from the first printed piece.

Variable Data Printing Module

Numerador prints variable text, images, barcodes, and QR codes, with different data for each printed piece. Numerador prints variable text, images, barcodes, and QR codes with different data for each printed piece.

Ideal for personalized invoices, event invitations, ID cards, checks, tickets, diplomas, pre-printed forms and documents, and other applications where each printed piece contains unique data.

Load data with simple copy-and-paste—Numerador automatically prints each variation from a single template, reproducing exactly what you see on screen.

Numerador Custombit is designed for print-production workflows that require accurate sequential numbering and variable data printing. It is optimized for numbering, field placement, and variable output, rather than general graphic design or layout composition.

Numerador Custombit is built on four core principles:

Intuitive interface with minimal learning curve—get started immediately without complex training or documentation.

Complete control over exactly which data prints and where—precision placement and data integrity on every document.

Process thousands of documents without system slowdown—lightweight architecture designed for high-volume production environments.

Precise, consistent results on every print run—zero tolerance for errors across large batches.

How It Works: Edit Objects

Numerador Custombit uses a flexible "Edit Objects" system (also called "Labels" in the interface) that allows you to layer multiple types of information on your document:

🏷Labels (Edit Objects):
In Numerador, these Edit Objects are called "Labels"—representing an editable field for sequential numbering or variable data that can be positioned on the program's editing panel, layered over your pre-designed background image.

Types of Edit Objects (Label Types)

Numerador offers two classes of edit objects: variable data labels and sequential numbering labels. One or more of these labels can be positioned over a pre-designed background image that serves as your design template:

Using Sequential Numbering Labels

Here we showcase practical use cases where Numerador Custombit excels through professional efficiency and ease of use.

Use Case: Sequential Numbering with Numbering Labels for Raffle Tickets, Event Tickets, and Receipts

This example demonstrates how Numerador automates sequential numbering across large print runs without manual intervention. Numerador applies a unique, consecutive number to each document copy automatically.

The image below shows Numerador's graphical interface with the print layout panel displaying a pre-designed background image containing 6 raffle tickets per sheet. Each ticket includes two sequential numbering labels—one positioned horizontally and one vertically. When you print the complete series, every copy receives unique, sequential numbering in both locations simultaneously.

Use Case: Sequential Numbering with Barcodes for Tickets and Receipts

This second sequential numbering example uses sequential barcode labels instead of simple numbering labels. These labels serve the same function as the numbering labels shown above, with one key difference: each copy prints with a unique, sequential number rendered as a barcode—either Code 39 or Code 128 format.

This approach is ideal for applications requiring machine-readable identifiers, such as inventory tracking, compliance documentation, document management, or any workflow where barcode scanning is part of your process.

Use case: Document Pagination Workflow for Legal & Government

Step-by-step production workflow breakdown of a use case in which many government agencies, law firms, notary offices, and printing contractors need to paginate documents consecutively. This is standard practice when working with large offset print runs of preprinted forms and templates — for instance, several thousand folio sheets already produced via offset press, where only the sequential folio numbering remains to be applied through variable data printing (VDP).

We also build custom solutions.
Need to print sequential numbers or variable data directly from your own database?
Do you have a sequencing rule or variable field specific to your business?
Contact us

Variable Data Printing (VDP)

In Variable Data Printing (VDP), variable data refers to any text, image, or code that changes from one printed piece to the next within a print run. This allows each ticket, badge, or document to be uniquely personalized, such as with different names, numbers, QR codes, or images-enabling targeted communication and professional customization in commercial printing jobs.

Variable Texts

You can add variable text labels anywhere on your form or background image. The content for each label is taken from a list of text values, which you can quickly populate by copying and pasting your data. This feature is ideal for personalizing tickets, badges, or documents with names, codes, or any other unique information for each print.

Variable QR Codes

Numerador Custombit also supports variable QR code labels. Each QR code is generated from a list of data values you provide, allowing every printed item to have a unique QR code. Simply copy and paste your list of texts or URLs, and the software will automatically create and place the corresponding QR code on each document.

Variable Images

Numerador Custombit allows you to place variable image labels directly onto the background image of your form or document. The images for each label are automatically selected from a list of filenames, which you can easily fill by simply copying and pasting the list of image names. Each printed piece will display the corresponding image from your list, enabling fast and flexible variable image printing.

The background and variable images can be any of:

PNG	Portable Network Graphics
JPEG	Joint Photographic Experts Group
BMP	Bitmap
TIFF	Tagged Image File Format
EMF	Enhanced Metafile
WMF	Windows Metafile
PDF	Portable Document Format

Sequential numbering labels are independent of each other, and their properties are fully customizable:

• X and Y Coordinates	Labels' position can be set using X and Y coordinates, or by dragging the label with the mouse or holding down the CTRL key while pressing either the left, right, up or down arrow.
• From - To	The starting and ending numbers of the series.
• Increment	Difference between one number and the next in the series. It can be a positive or negative integer (increment or decrement).
• Number of digits	The number of digits in the number.
• Fill with	The character used to pad the number to the specified number of digits.
• Prefix	Any text you want to appear before the number.
• Suffix	Any text you want to appear after the number.
• Font	Select font, style, size and effects.
• Custom color	Select the color from the Color Dialog Box.
• Align	Horizontal alignment to left or right.
• Slant	Angle of rotation (in degrees).
• Numeral system	Hindu-Arabic, Chinese, Japanese or Roman Numerals; Supports multiple numeral systems worldwide.