FREE TOOLS

PDF Page Label Editor

Replace logical PDF page labels with numbered or prefix-only ranges while retaining supported existing document contents.

PDF, JSON label ranges

PDF

Browser only

Runs locally in your browser. Your files, pasted content and generated output are not uploaded. Reset clears this tool’s working data.

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How to use this tool

Choose one unencrypted PDF.
Enter a JSON array of ranges with page, style, prefix and start. Use increasing one-based physical page numbers and begin at page 1.
Use D for decimal, r or R for Roman, a or A for alphabetic, or none for a prefix-only label. Each range continues until the next range.
Select Set page labels, download page-labels.pdf and inspect its navigation labels in a supporting PDF reader.

[{"page":1,"style":"r","prefix":"","start":1},{"page":3,"style":"D","prefix":"S-","start":7}] gives i, ii, S-7, S-8 on a four-page PDF.

One PDF up to 50 MiB, 500 pages and 100,000 parsed objects; at most 500 ranges and 100,000 characters of JSON settings. Prefixes: 200 UTF-16 code units of valid Unicode without controls; starting numbers: 1–10,000. Output: 100 MiB; deadline: 120 seconds.
Existing logical labels are replaced. No visible page-number stamps are drawn and page order is unchanged. PDF reader support varies.
Digitally signed PDFs, unsafe actions and unsupported preservation features are rejected rather than stripped. Forms requiring appearance regeneration must first be saved in a PDF application.
Ranges must be unique and increasing, begin at physical page 1 and remain within the document. Prefix-only style ignores the number when displaying the label.

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