CHAMMILION

MINI TUTORIAL · PDF LAB

Quick tutorial: extract only the pages you actually need

  1. 1

    1. Import the batch

    Drop or choose one or several PDFs. Every file gets its own card and page count. Invalid or protected documents are reported without stopping the others.

  2. 2

    2. See and choose real pages

    Visible pages are rendered from your uploaded PDF, never generic examples. Click a thumbnail to select it. Selection starts empty so the full original cannot be exported by accident.

  3. 3

    3. Speed up selection

    Use ranges such as 1-3, 5, 8-10 across all documents. Odd, even, all, and none shortcuts help with repetitive files, and every page can still be adjusted individually.

  4. 4

    4. Extract, review, and download

    Process one card or the whole batch. Generate a scrollable local preview of the final pages, then download individual PDFs or a ZIP.

GUIA · PDF LABComplete guide to visual PDF page extraction

Extract pages without losing context, order, or quality

Extracting pages is different from splitting an entire PDF. Here you open each document, see the real page, and choose exactly what goes into the final copy. Use it for attachments, receipts, chapters, contract pages, scans, and any material that must be sent separately without changing the source file.

Selection is independent for every document. Choose page 1 from one PDF, pages 3 through 6 from another, and only even pages from a third. Each file produces its own result in visual order. Originals are never modified and remain on your device.

PDF Lab renders real thumbnails only as they enter the screen. This avoids consuming memory for thousands of pages you have not reached yet. The thumbnail is only for review; final extraction copies the chosen original PDF pages without recompressing or lowering quality.

Real visual selection

Every thumbnail is the real document page. The corner number is only a reference; the visible content is what will be included or excluded.

Quality and structure

Selected PDF pages are copied to a new PDF. Extraction does not rasterize, recompress, or reduce sharpness.

Reprocess without uploading

Changing selection invalidates only that card’s old result. Files remain loaded so you can correct and create another copy.

Batch work and privacy

Each PDF gets an independent result. Import, thumbnails, extraction, preview, and ZIP stay inside the browser.

Frequently asked questions

Is the original changed?⌄

No. A new copy contains chosen pages; the imported file is not replaced or uploaded.

Why is nothing selected on import?⌄

It prevents accidentally exporting the entire original. Mark only pages you need or use range, odd, even, or all shortcuts.

Do thumbnails show the real page?⌄

Yes. They are rendered from your PDF only as they approach the visible area to keep large batches responsive.

Is page order kept?⌄

Yes. The new PDF follows the natural order of selected pages.

Can I extract from multiple PDFs?⌄

Yes. Each PDF has its own result, and ZIP collects completed files.

Does quality change?⌄

No. Pages are copied without image rendering or recompression.

Why can preview take a moment?⌄

It renders real output pages locally on canvas instead of using the browser’s embedded PDF viewer, which can be blocked.

What does 1-3, 5 mean?⌄

It selects pages 1, 2, 3, and 5. Commas separate blocks; a hyphen creates a continuous range.

Can I change selection afterwards?⌄

Yes. Click thumbnails or use shortcuts, then process the same file again without importing it again.

Tip: use Split PDFs for one PDF per page. Use this tool when one copy should contain only chosen pages.

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