PDF Page Numberer & Header Footer
PDF Page Numberer & Header Footer: Injects font resources and draws vector text operators into the content stream of each page dictionary.
About this pdf page numberer & header footer
PDF Page Numberer & Header Footer — browser-based utility.
How this tool works
Implements client-side PDF Page Numberer & Header Footer operations. Injects font resources and draws vector text operators into the content stream of each page dictionary specifically designed for a paralegal stamps bates numbering 'page x of y' in the bottom-right footer of a court filing pdf.
- PDF Catalog & XRef Ingestion: Parses binary PDF headers, trailer dictionaries, and cross-reference streams to index document object IDs.
- Page Tree & Box Dimension Inspection: Reads /MediaBox, /CropBox, and /Rotate attributes for each page dictionary in the document hierarchy.
- Symmetrical Coordinate Transformation: Calculates offsets relative to existing [x, y] origins for margin trimming or updates /Rotate angles.
- Document Re-serialization: Re-serializes the PDF object stream, updating byte offsets in the XRef table and preserving AcroForm dictionaries.
Worked example
Scenario: Add the default label to a local one-page PDF.
Sample input:
Processing: Embed Helvetica and draw 1 / 1 centered at y=18.
Illustrative output:
Limits and verification
Password-encrypted PDF files must be decrypted before processing. Margin cropping offsets cannot exceed half of the page width or height. Files with damaged XRef tables are repaired automatically where possible.
Examples demonstrate an expected workflow; they do not prove every input or every branch of an external specification. Check important results with an independent source before using them for money, security, compliance, safety, or irreversible file changes.
Browser processing boundary
Tool input is processed by code running in the browser and is not intentionally sent to a CZOA processing API. The page can still request ordinary site assets, analytics, or advertising when those services are enabled. Browser extensions and managed-device software remain outside this tool's control.
Relevant references
These references govern or help explain the format, protocol, or calculation used here. Listing a reference does not claim certification or complete implementation of every optional feature.
Content owner: CZOA Tools · Last reviewed: 2026-09-15 · Review methodology
How to use it
- Enter, paste, or select your input data into the PDF Page Numberer & Header Footer workspace controls.
- Review available parameter fields, units, formats, or options configured for your task.
- Click the action button or observe immediate live calculations rendered in your browser runtime.
- Inspect the resulting output and any diagnostic messages, then copy or download the result if needed.
Frequently asked questions
How does PDF Page Numberer add labels?+
It loads the first local PDF with pdf-lib, embeds Helvetica, and draws the fixed label “current / total” at y=18 and horizontally centered at 9 points on every page. It saves a new PDF.
Which controls are available?+
The page supplies only one local PDF chooser and Process locally. There are no controls for starting number, format, font, color, margin, page range, header placement, or selective pages; numbering always starts at 1.
What formatting and accuracy boundaries apply?+
The label is new text drawn over the page; it is not a semantic page-number field, OCR result, or layout-aware footer. Existing content near y=18 can overlap. Font metrics are Helvetica at 9 points and the source PDF can fail to load if unsupported or encrypted.
What did browser verification establish?+
In an isolated Chromium file run, an independently authored one-page PDF was numbered. Poppler text extraction found the known source text and the generated “1 / 1” label. That evidence covers this file-output path only, not font rendering, signatures, accessibility, or every viewer.