Merge TIFF to PDF

How to Merge TIFF to PDF Online

1. Upload Your TIFF Files: Drag and drop or click "+ Add Files" to add multiple .tiff or .tif images — single-page scans, multi-page TIFFs, or fax pages. Reorder by dragging thumbnails to set the page sequence in the output PDF.
2. Pick Combine Mode and Paper Size: Default is Single PDF (all images merged in order). Switch to Individual PDFs to get one PDF per TIFF. Set Paper size to A4 (default), Letter, Legal, Tabloid, A3, ISO B4/B5, Executive, or Original (match each image's pixel dimensions).
3. Optionally Set Layout, Placement, Margin, and Quality: Choose Page layout Portrait (default) or Landscape; Image placement Contained (fit with margins, default) or Cover (fill page edge-to-edge); Image alignment Top, Center (default), or Bottom; Margin No margin / Narrow (0.5") / Moderate / Normal (1") / Large; and Image Quality (%) from 1–100 (default 75) for embedded image compression.
4. Merge and Download: Click Merge. Files process in your browser session and the combined PDF downloads — no sign-up, no watermark, no account required.

Why Merge TIFF to PDF?

TIFF (Tagged Image File Format), originally published by Aldus in 1986 and now maintained under Adobe copyright since the 1994 acquisition, is the dominant container for high-fidelity scanned documents, fax pages, medical imaging, and prepress artwork. PDF (ISO 32000) is the universal document container — viewable on any phone, browser, or desktop without specialized image software. Merging a folder of one-page TIFFs (or a stack of multi-page TIFFs) into a single PDF turns a scattered scan job into a shareable, paginated document.

• Office scanners that produce one TIFF per page — Sheet-fed scanners and many MFPs still output a separate .tif file per page. Merging them in scan order produces the contiguous PDF a recipient actually expects.
• Fax archives and CCITT Group 4 / T.6 pages — Faxes and many scan-to-email workflows save as 1-bit CCITT-compressed TIFFs. Merging keeps the bilevel compression efficient inside the PDF instead of re-rasterizing.
• Medical imaging exports — DICOM-derived TIFF stacks, X-ray scans, and pathology slides are commonly shared as PDF reports for referring clinicians who don't have a DICOM viewer installed.
• Long-term archival (PDF/A territory) — Government, legal, and library archives prefer PDF over loose TIFFs. PDF/A-1 (ISO 19005-1:2005, based on PDF 1.4) and PDF/A-2/3 (ISO 19005-2/3) are explicitly designed for long-term preservation of scanned content with an optional invisible OCR text layer.
• Print artwork compilation — Designers receive page proofs as 300 DPI CMYK TIFFs and merge them into a single PDF for client review or press handoff. The "Cover" placement plus "No margin" preserves bleed.
• Email and DMS attachments — Most document-management systems and email clients open PDFs natively but require a TIFF viewer extension. A single PDF is easier to attach, route, and version than a folder of TIFFs.

TIFF vs PDF — Format Comparison

Settings Quick Guide

Frequently Asked Questions

What happens if my TIFF file already contains multiple pages?

A multi-page TIFF stores each page as a separate IFD (Image File Directory) inside one file. The merge tool flattens each uploaded file into the output stream — so a single multi-page TIFF and several single-page TIFFs both contribute their pages to the final PDF in upload order. If you need to preserve internal TIFF page order before merging with other files, upload that multi-page TIFF first and reorder around it.

Will the merger preserve the original scan resolution and DPI?

Yes — the embedded image keeps its source pixel dimensions. DPI (dots per inch) is a metadata hint about physical size; the actual pixels are unchanged. With Image placement: Cover the image fills the chosen paper size, scaling pixels to fit. With Contained the image keeps its aspect ratio and is centered. Choose Paper size: Original to make each PDF page match the source TIFF's pixel dimensions exactly.

Should I pick Cover or Contained placement for scanned pages?

Use Cover when every TIFF is the same orientation and you want edge-to-edge fill (typical for letter/A4 page scans). Use Contained when pages vary in aspect ratio (mixed receipts, photos, charts) or when you need a visible margin around each image. Cover may crop slightly if the image and page aspect ratios differ; Contained always shows the full image but leaves whitespace.

How much will the output PDF be compressed compared to the source TIFFs?

It depends on the source. Uncompressed TIFFs (common from scientific scanners and DICOM exports) typically shrink 5–10× when re-encoded inside the PDF using JPEG at quality 75. LZW or Deflate-compressed TIFFs shrink modestly (~1.5–2×). Already-compressed JPEG-in-TIFF or CCITT G4 fax pages may end up about the same size or slightly larger after PDF wrapping. To squeeze the result further, run Compress PDF on the merged output.

Is the output PDF/A compliant for long-term archival?

The merger produces standard PDF, not PDF/A. PDF/A (ISO 19005) requires embedded fonts, a defined color profile, and no transparency, JavaScript, or external references — restrictions a generic image-to-PDF flow doesn't enforce. For archival deposits (court filings, library accessions, regulated industries), open the merged PDF in Acrobat Pro, Foxit, or a PDF/A validator and convert to PDF/A-1b or PDF/A-2b explicitly, or use a dedicated archival pipeline.

Can I merge TIFFs from different sources — color photos, B&W scans, faxes — into one PDF?

Yes. Each page is rendered into the PDF independently, so a 24-bit color photo TIFF, a 1-bit fax page, and a grayscale receipt scan can all coexist in one document. Pick Contained placement to handle the orientation/aspect mix gracefully, and a moderate Image Quality around 75–85 — high enough for color photos, not wasteful on bilevel pages.

Why is my merged PDF much larger than the sum of the input TIFFs?

Two common causes: (1) the source TIFFs used CCITT G4 or LZW compression that the PDF encoder didn't carry over verbatim, so the images were re-encoded as JPEG; (2) you set Image Quality at 95–100, which leaves very little compression headroom. Drop the Image Quality slider to 70–80 and re-merge — quality difference is rarely visible at typical scan resolutions, and file size often drops 40–60%.

Are my files uploaded to a server, or does this run in the browser?

Files are processed in a private session and removed after download. There is no public file gallery and no account required. For sensitive documents (medical, legal, financial), this matters: the alternative of mailing TIFFs to a third-party converter exposes them to that vendor's retention policies. If single-image conversion is enough, Convert TIFF to PDF handles one file at a time without merge.

Can I add an OCR text layer so the PDF is searchable?

The merge tool produces an image-only PDF — pages are rendered as embedded images, so text inside the scans is not searchable. To make a scanned PDF searchable, run it through an OCR step afterward (Adobe Acrobat's "Recognize Text", Tesseract, or any OCR-capable PDF tool). For born-digital documents that need to stay editable, Merge PDF preserves the original text layer instead of re-rasterizing.