Common questions

No. Every file you drop in is decoded and converted to PDF entirely inside your browser, using your device’s own processing power. Your files are never sent anywhere, so there is nothing to upload, store, or later delete.

There is no fixed file-count cap. Because conversion happens locally, the only real limit is your own device’s memory. For very large batches we show a warning so you know before your browser runs out of headroom.

Both. Choose "separate PDFs" to download one PDF per source file (bundled as a zip when converting more than one), or "merge into one PDF" to combine your entire batch into a single file in the order you added them.

Each page inside a multi-page TIFF becomes its own page in the resulting PDF, in the same order as the source file.

No. There is no account, no watermark, and no paywalled page or file-size limit.

Standard uncompressed, PackBits, LZW, and JPEG-in-TIFF compressed files are fully supported. Some less common variants (such as CCITT fax-compressed scans) may not decode correctly since there is no server to fall back to — if a file fails, you will see a clear error for that file without it blocking the rest of your batch.

Drop your TIFF file (or a whole batch of them) into the converter on the home page, choose whether you want a separate PDF per file or one merged PDF, then download the result. Converting — or changing — a TIFF to PDF this way takes seconds, since the file is decoded and rebuilt as a PDF entirely in your browser rather than on a server.

This tool is completely free to use — there is no sign-up, no watermark, and no page or file-size limit hidden behind a paywall. Just drop your TIFF files into the converter and download your PDF; you will never be asked to pay or create an account.

Yes. "Changing" a TIFF file to PDF and "converting" it mean the same thing here — drop the file in and it is rebuilt as a standard PDF you can open, print, or share anywhere, on any device.

No — this tool only converts TIFF to PDF, not the other way around. If you need to go from PDF back to TIFF (or another image format), you will need a separate PDF-to-image tool.

TIFF is an image format used mainly by scanners, fax software, and professional printing or photography workflows — it stores pixel data with little or no compression, so files are large and not every device can open them. PDF is a portable document format built for sharing: it opens identically on any device, can hold multiple pages in one file, and is what most upload portals expect — which is why TIFFs so often get converted to PDF before they are actually usable.

TIFF stands for Tagged Image File Format. It is a flexible raster image format — the "tags" in its name refer to the metadata fields (resolution, compression, page count, and more) stored alongside the image data.

On Windows, the Photos and Paint apps can open TIFF files; on Mac, Preview opens them natively. Most web browsers cannot open a .tiff file directly, which is one of the main reasons people convert TIFF to PDF — a PDF opens in any browser with no extra software.

Yes, in its most common configurations. TIFF supports fully uncompressed storage as well as lossless compression methods like LZW and PackBits, so no image quality is lost. It can also use lossy JPEG compression internally, though that is less common.

It depends on the use case. TIFF preserves full image quality with lossless (or no) compression, which is why it is the standard for scanning, archiving, and professional printing — but its files are much larger. JPEG uses lossy compression to produce far smaller files, which makes it better for web use and everyday photography where a small amount of quality loss is acceptable.

TIFF's biggest drawback is file size — an uncompressed or losslessly compressed TIFF can be many times larger than a JPEG of the same image. TIFFs also are not well supported by web browsers or most everyday apps and cannot be viewed online without converting them first, which is why converting to PDF or JPEG is so common.