📄 PDF Tools — Merge / Split / Compress

Merge PDFs

Select PDFs (order kept)

Tip: Shift+click to select in order. You can re-add to append.

Merge Clear

Output: Single merged PDF. Pages preserved as-is.

Split PDF

Select a PDF

Example ranges: 1-3,7,10- (open end = to last page)

Split Clear

Page Ranges Output Mode By ranges One file per page Zip Results? Yes No (download individually)

Output: Multiple PDFs as selected (can be zipped).

Compress PDF (Image-based)

Select a PDF

Image-based recompression: reduces size, but flattens text into images.

Compress Clear

Preset Medium (good balance) Low (smallest size) High (better quality) Lossless re-save JPEG Quality (10–95) Scale (% of original)

Presets override Quality/Scale (you can tweak after picking a preset).

For selectable text, use Merge/Split only (no recompression) or “Lossless re-save”.

• Merge: concatenates PDFs using pdf-lib. No quality loss.
• Split: extracts selected pages/ranges to new PDFs.
• Compress: renders pages to canvas via PDF.js and re-embeds as JPEG for strong size reduction. Text becomes images.
• Lossless (compress): re-saves with object streams; small gains, preserves text.

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• For tiny email limits, use Low preset (aggressive).
• For print clarity, use High or keep originals.
• Large PDFs can be heavy in-browser—process in chunks if needed.