Real preview
The central panel renders the selected source page, not a sample illustration.
MINI TUTORIAL · PDF LAB
Quick tutorial: number PDFs with a real visual editor
- 1
1. Add and select a PDF
Build the batch and select a card. Use the preview arrows to inspect real pages before creating an output.
- 2
2. Edit the label live
Drag the number label to its place. Then set start number, prefix, suffix, size, rotation, opacity, and color in the side panel.
- 3
3. Use proportional adaptation
Position follows page width and height. Font, padding, and safe margins scale with the shortest edge, so small documents do not get a giant label and large pages do not get tiny text.
- 4
4. Process, review, repeat
Apply to one PDF or the entire batch. Changing a setting only invalidates the old output; files remain loaded so you can adjust and generate again.
GUIA · PDF LABComplete guide to local PDF page numbering⌄
Visual numbering control for every page size
Number PDF Pages adds a new layer without rewriting text, replacing images, or touching the original file. It is useful for reports, handouts, contracts, attachments, drafts, and review copies.
The editor renders a real page from the selected PDF. Drag the label over that page, then adjust prefix, suffix, size, rotation, color, and opacity before processing. The batch stays compact on the left so the review area remains useful.
Position is stored as a page proportion rather than fixed pixels. During export, text size, safe area, and margins are calculated from the shortest edge of every page, keeping the label consistent across A4, Letter, portrait, landscape, and mixed documents.
Responsive position
Dragging is converted to percentage coordinates and constrained by a safe margin on every exported page.
Proportional typography
The chosen size is the A4 reference; text, label, border, and margins scale with the page.
Reprocess locally
Changing content or appearance clears an old result without removing the batch.
Frequently asked questions
Is the original PDF changed?⌄
No. A new PDF is created and the imported file remains untouched.
How does position adapt to different page sizes?⌄
The editor saves a percentage, not a fixed coordinate. Export applies that percentage to each page width and height.
Does number size adapt too?⌄
Yes. Font, label, border, and margin use the shortest page edge as their reference.
Does it solve every layout automatically?⌄
It handles normal format and orientation differences. Review pages where important content sits beneath the intended label area.
Can I drag the number freely?⌄
Yes. Drag it on the real page; export preserves a minimal safe margin.
How do prefix and suffix work?⌄
Add text before or after the number, such as “Page 4 – draft”.
Can I number only selected pages?⌄
Yes. Use ranges such as 1-3, 5, 8-10, or leave the field empty for all pages.
Does counting continue between PDFs?⌄
Each PDF starts from the configured value so results remain independent.
Why did the old output disappear after an edit?⌄
It prevents downloading stale settings. The batch remains ready for another run.
Are files uploaded?⌄
No. Rendering, editing, generation, preview, and ZIP creation happen in the browser.
Tip: rotate incorrectly oriented pages first, then place the label on the corrected PDF preview.
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