TIFF to PDF, every page in one file.

A TIFF to PDF converter puts the pages of a TIFF scan into a PDF, a file that opens on every phone and computer and is easy to email. This one handles multi-page TIFFs, where one file holds a whole document, and it can join many TIFF files into one PDF. The TIFF is read in your browser, the PDF is built there, and neither is uploaded.

How to convert TIFF to PDF

1. Drop your .tif or .tiff files on the box, or click it to choose them. Several files are put in name order, with page 2 before page 10.
2. Wait for the small pictures to appear. A page shows its file name, its size in pixels and its dpi if the file states one.
3. Drag pages into the order you want, or use the arrow buttons under each page. Press the cross to remove one. Sort by file name puts everything back in name order.
4. Choose Page size, Compression and, for big scans, Reduce big scans to.
5. Press Download the PDF. The line above it gives the number of pages and the size of the file.

With many megapixels the PDF is not made after every click. The page then shows Make the PDF, so you can set everything first.

Page size

With Same as the TIFF each PDF page is as large as the scan was on paper. The page reads the dpi (dots per inch) stored in the TIFF and divides the pixels by it. A PDF point is 1/72 of an inch, so a page is pixels divided by dpi, times 72. For a colour A4 scan of 2480 by 3508 pixels at 300 dpi, the width is 2480 divided by 300, times 72, which is 595.2 points, and the height is 3508 divided by 300, times 72, which is 841.9 points. That is A4. If a TIFF has no dpi, the page uses the choice under If a TIFF has no dpi, use, which starts at 96.

With Fit to A4, Letter, Legal or A3, every page is paper size and the whole scan is scaled to fit inside the margin you pick. A scan wider than tall gets a landscape page. Nothing is cropped.

Compression and file size

Lossless colour is 3 bytes per pixel before packing, so the 2480 by 3508 page above is 26,099,520 bytes, about 26 MB, before zlib shrinks it. Black and white scans (1 bit per pixel, as faxes and many document scanners make) are different. They are always saved as a 1-bit image, which is lossless: the same page is 310 bytes per row times 3508 rows, 1,087,480 bytes before packing.

To cut the size of a big scan, use Reduce big scans to. A 300 dpi page shrunk to 150 dpi has half the width and half the height, so a quarter of the pixels. The page stays the same size on paper. Scans below the chosen dpi are left as they are.

What is read and what is not

• Uncompressed, LZW, ZIP (Deflate), PackBits and JPEG-compressed TIFFs are read. Black and white Group 4 fax compression (CCITT) is read too. The page says if a file uses a type it cannot open.
• Small preview pages that some cameras and scanners add to a TIFF are skipped.
• A TIFF holding JPEG pages is decoded and saved again, so those pages are compressed twice. Choose JPEG, high quality to keep that loss small.
• Layers, notes and colour profiles in the TIFF are not carried over.
• Very large scans are held in memory while they are read. If your browser runs out of memory, remove pages or reduce the dpi.

Need the pages as pictures instead? Use TIFF to JPG. For JPG, PNG or HEIC pictures, use JPG to PDF, and to join PDFs use merge PDF.