Add page numbers to a PDF
Add a PDF, choose a format such as “1” or “Page 1 of N” (or write your own with {n} and {total}), pick a position and margin, then preview the first numbered page.
Drag & drop PDFs here — or click to choose files
PDF — files stay on your device
How to use it
- Add one PDF and choose the number format and start value.
- Set the position, margin, font size and page range.
- Check the preview, then download the numbered PDF.
Limits & formats
Regular unencrypted PDFs up to 50 MB and 100 pages. Numbers are rendered with your device's system fonts (Chinese included) and embedded as high-resolution images (150/300 dpi selectable), not vector text. Pages already containing numbers are not detected — avoid double numbering by choosing the range.
Privacy
Your PDF is processed locally in this browser tab. YYSI servers never receive your files. Only anonymous usage counters (tool name, success or failure, rough size range) are recorded.
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