Is my TIFF uploaded to a server?

No. UTIF.js parses the TIFF entirely in your browser, and pdf-lib embeds the pages client-side. The file never leaves your device.

Are multi-page TIFFs supported?

Yes. Multi-page TIFFs (common from fax workflows, scanners, and document archives) are parsed page-by-page and each becomes a PDF page, preserving order and original dimensions.

What about colour, bit depth, and compression?

UTIF.js handles standard 8-bit RGB, RGBA, and Greyscale TIFFs with PackBits, LZW, Deflate, or no compression. Exotic encodings (16-bit RGB, JPEG-in-TIFF for some scanners, CCITT Group 4 fax) may render incorrectly or fail. For unsupported files, open in Preview or an image editor and re-save as PNG first.

What is the maximum file size?

The current limit is 50 MB. Multi-page TIFF scans of long documents can hit memory limits before file-size limits — a 100-page colour TIFF can use 1+ GB of memory during decode. Split very large files first if conversion fails.

Is my TIFF uploaded to a server?

No. UTIF.js parses the TIFF entirely in your browser, and pdf-lib embeds the pages client-side. The file never leaves your device.

Are multi-page TIFFs supported?

Yes. Multi-page TIFFs (common from fax workflows, scanners, and document archives) are parsed page-by-page and each becomes a PDF page, preserving order and original dimensions.

What about colour, bit depth, and compression?

UTIF.js handles standard 8-bit RGB, RGBA, and Greyscale TIFFs with PackBits, LZW, Deflate, or no compression. Exotic encodings (16-bit RGB, JPEG-in-TIFF for some scanners, CCITT Group 4 fax) may render incorrectly or fail. For unsupported files, open in Preview or an image editor and re-save as PNG first.

What is the maximum file size?

The current limit is 50 MB. Multi-page TIFF scans of long documents can hit memory limits before file-size limits — a 100-page colour TIFF can use 1+ GB of memory during decode. Split very large files first if conversion fails.

TIFF to PDF

Convert TIFF images to multi-page PDF

Processed locally — your files never leave your browser

How It Works

Upload

Drag your .tif or .tiff file onto the upload area. Files up to 50 MB are accepted. Multi-page TIFFs are recognised automatically.

Convert

UTIF.js decodes each TIFF frame in your browser, converts the RGBA pixels to a PNG, then pdf-lib embeds each page in the output PDF at the original dimensions.

Download

Save the PDF directly to your device. Every TIFF page becomes one PDF page, in order.

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