Convert TIFF to PDF (Multi-Page Scans and Faxes, Free)

TIFF is the format of the paperwork world: office scanners and scan-to-email copiers, fax servers, medical and legal archives, microfilm digitization projects. It earned that role decades ago by doing one thing image formats usually can't — storing many pages in a single file. A 12-page contract from a fax gateway arrives as one .tif, not twelve files.

The problem is everything downstream. Phones often won't preview a TIFF. Browsers don't display them. Email recipients see an attachment they can't open, and multi-page TIFFs are the worst case: many viewers that do open the file silently show only the first page, and people genuinely miss the rest of the document. Converting to PDF keeps all the pages, keeps the order, and ends the "can't open it" replies for good.

How to convert TIFF to PDF — step by step

🔒 pdfty.com/en/tools/tiff-to-pdf

Why multi-page TIFFs trip up other tools

A multi-page TIFF is technically one file containing several complete images ("directories" in TIFF jargon). Generic image converters read the first image and stop — so a 15-page fax becomes a 1-page PDF and nobody notices until the missing pages matter. When testing any converter, check the page count of the output against the original; with pdfty TIFF to PDF, every directory in the file becomes a page.

There's a second, sneakier failure mode: converters that do read every page but re-encode fax-compressed pages as full-color images, turning a 400 KB fax into a 40 MB PDF. Keep an eye on the output size as well as the page count — a faithful conversion of a black-and-white scan should stay in the same ballpark as the original.

File sizes: why some TIFFs explode and some shrink

TIFF is a container for many compression schemes, which is why conversion results vary:

• Fax-style black-and-white TIFFs (Group 4 compression) are tiny — tens of kilobytes per page — and the PDF stays correspondingly small.
• Uncompressed color TIFFs from flatbed scanners are enormous: a single 300 DPI A4 color page can be 25 MB on its own. The PDF conversion doesn't bloat it further, but the input may already exceed the 20 MB free limit — rescan at lower DPI, scan to grayscale, or go Pro ($9/mo).
• If the finished PDF is still too big to email, Compress it, or use Compress to size to hit a specific attachment limit — background in how to make a PDF smaller.

Free local alternatives

• macOS Preview — opens multi-page TIFFs with all pages in the sidebar; File → Export as PDF. Genuinely good for this job.
• Windows — the Photos app and Explorer's print dialog handle basic TIFFs via Microsoft Print to PDF, but multi-page handling is hit or miss; IrfanView (free) does it properly.
• Command line — tiff2pdf -o out.pdf input.tif from libtiff is the classic, preserving fax compression as-is; img2pdf also accepts TIFF. Right choice for batch-converting an archive folder.
• LibreOffice Draw — opens TIFFs and exports PDF; workable but manual for multi-page files.

Practical gotchas

• Still a scan, not text. The PDF contains images of pages — you can't search or copy the text yet. Run OCR on the result to add an invisible text layer; best free OCR for PDF compares the options.
• Crooked fax pages. Fax and sheet-fed scans often arrive slightly rotated. Deskew straightens them (note it rasterizes pages — fine for scans, which are raster already), and Rotate fixes pages scanned sideways.
• Several TIFFs into one document. Convert them together, or merge the resulting PDFs with Merge — see how to merge PDFs without Adobe.
• Archival requirements. If the destination demands PDF/A (courts, registries, long-term archives), convert the result with PDF to PDF/A after.
• Limits. Free: 20 MB per operation, 50 pages per file, 10 operations a day, no watermark. Pro lifts all three.

Frequently asked questions

Does a multi-page TIFF keep all its pages?

Yes — each page (TIFF directory) becomes one PDF page, in the original order. That's the main reason to use a converter that explicitly supports multi-page TIFF rather than a generic image tool.

Are .tif and .tiff different?

No — same format, two spellings of the extension. Both upload fine.

Will the scan quality change?

No visible change: the page images are carried into the PDF at their original resolution. Conversion can't improve a blurry fax either — what was scanned is what you get.

Can I search the text in the converted PDF?

Not until you OCR it. The conversion produces image pages; run OCR afterwards to make the text searchable and copyable.

My TIFF is over 20 MB — what now?

Common with uncompressed color scans. Options: rescan at 200–300 DPI in grayscale, split the TIFF into parts locally, use the tiff2pdf command-line route, or go Pro ($9/mo) for bigger files.

Can I combine multiple TIFF files into one PDF?

Yes — upload them together and arrange the pages, or convert separately and join the PDFs with Merge.

The fax pages are crooked or sideways — can I fix that?

After converting: Rotate for 90°-wrong pages, Deskew for slightly tilted scans. Deskew re-rasterizes pages, which is harmless for scanned content.

Is uploading scanned contracts safe here?

Transfers are HTTPS-encrypted, there's no sign-up, and files are deleted from the server within an hour. For material you can't upload at all, use Preview or tiff2pdf locally.