Collate - Combine, Split, & Reorder PDFs

Combine PDFs, PNG, JPG and TIFF into one PDF, or split a PDF by page ranges. Runs locally.

Collate does two things to PDFs, right in your browser — no uploads, no accounts, no waiting. Combine. Drop in any mix of PDF, PNG, JPG/JPEG, and TIFF files. Each appears as a numbered sheet you can drag into the order you want. Multi-page TIFFs are expanded automatically so every frame becomes its own page. Click Combine and download the merged PDF. Split. Drop in a PDF and enter page ranges using the same syntax as a print dialog — 1-4, 5, 6-10 gives you three separate documents. The results land in the same stack view, so you can download them individually, grab them all at once, or reorder them and bind them back into one file. That last part makes fixing a mis-scanned document a single-screen job: split it apart, drag the pages into the right order, recombine. Why Collate: • Combine PDFs and images together — not just PDF-to-PDF • Split by page range with live validation before you commit • Drag-and-drop reordering in both modes • Split output feeds straight back into combining — no re-importing • Multi-page TIFF support, common in scanned documents • 100% local — files are processed in your browser tab and never uploaded • No permissions required, no account, no network access • Flags unreadable or password-protected files instead of failing silently Useful for merging scanned receipts, pulling a signed page out of a long contract, breaking a batch scan into individual documents, or reordering pages from a scanner that got them backwards. Collate requests no browser permissions and makes no network requests — everything happens locally on your device.