Convert TIFF to PDF
Every page of a scanned or faxed TIFF, in one PDF, made on your device.
- Nothing is uploaded
- Works offline after first visit
- Open source
- No watermark · limit is your device’s memory; phones hold less
Convert multi-page TIFF scans and faxes to one PDF in your browser, every page kept. It is free, needs no account and adds no watermark, and your files are not uploaded: everything runs in your browser on your device. The size limit is your device’s memory, and phones hold less; give the page a short while after one visit to save itself for offline use, and then it works offline.
Done
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Open the network tab. Your files never appear in it.
Add files and run the tool to see every request this tab makes.
Your files are processed on this device and never sent to a server. Reload the page to clear everything from memory.
Fax services, document scanners, e-fax inboxes, court and land-registry systems and older document management software still deliver pages as TIFF, often several pages in one file. The recipient usually wants a PDF: it opens on every phone, prints predictably and attaches to any form. This page turns each page of each TIFF into a page of one PDF.
The TIFF is read by UTIF.js, a decoder bundled with the site, because Chrome, Edge and Firefox cannot open TIFF themselves. It understands the compression schemes documents use, including CCITT Group 3 and Group 4 for black-and-white fax pages, plus LZW, Deflate and JPEG for colour scans. Each page is placed in the PDF at its own pixel size with "Fit to each image", or scaled onto A4 or Letter with a margin if you are going to print.
Drop several TIFFs and they follow each other in the order listed, every page of the first file, then every page of the next. Reorder files with the arrows before converting. Pages are stored as high-quality JPG inside the PDF, which keeps colour scans compact; a black-and-white fax page ends up well under 100 KB.
Faxes and scans tend to be paperwork you would not hand to an unknown website: medical referrals, tax letters, signed contracts, bank statements. Here nothing is uploaded. The TIFF is decoded and the PDF is written inside your browser tab, and closing the tab clears it.
How it works
- Drop one or more TIFF files, or tap to pick them. Multi-page files are fine.
- Keep "Fit to each image", or pick A4 or Letter with a margin for printing. Set the order of files with the arrows.
- Convert. One PDF with every page of every TIFF downloads from your browser.
In your browser, not on a server
A JPG is embedded directly into the PDF by pdf-lib, unchanged, unless it needs rotating by its EXIF orientation (as sideways phone photos often do), in which case it is decoded and re-encoded at high quality. A PNG is embedded losslessly. Other formats are decoded by your browser (HEIC via libheif, TIFF via UTIF.js, one page per TIFF page) and embedded as high-quality JPG. Page size, orientation and margins are applied while laying out each page in memory.
Compared with upload-based tools: Uploading a folder of receipts or ID scans to make one PDF is exactly the kind of thing that should not need a server. The PDF is assembled on your device in the time it takes to pick the files.
Verify it yourself. Give the page a short while after one visit to save itself for offline use, then turn off Wi-Fi or switch to airplane mode and run the tool again. Or open your browser's developer tools (F12, or Cmd-Option-I on a Mac), pick the Network tab, and watch it while you convert. The panel above does the same count for you.
Questions
Are all pages of a multi-page TIFF included?
Yes. Every page becomes a PDF page, in the order stored in the file. The small preview images some scanners save beside each page are skipped.
Will text in the scan be searchable?
No. The pages are images of the paper, exactly as in the TIFF. Searchable text needs optical character recognition, which this page does not do.
Why does the fax look stretched?
Standard-resolution faxes use pixels twice as tall as they are wide (204 by 98 dpi). The page is placed pixel for pixel, so it can look squashed; choosing A4 or Letter does not correct the aspect either. Most modern fax services send fine mode, which is square and looks normal.
Is the file uploaded anywhere?
No. There is no server in this process. The page is a static file and the work is done by code running inside your browser tab. Give the page a short while after one visit to save itself for offline use; then you can turn off Wi-Fi and it still works.
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Guides
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- A free Convertio alternative with no file size capConvertio's free plan caps both file size and how many conversions you get per day. Here is an alternative with no such ceiling.
- A free PDF Candy alternative that doesn't upload your filesPDF Candy's free plan works, with page, hourly and batch limits, and your file goes to its servers first. Here is what changes when it never leaves your device.
- Is Convertio safe?Convertio is a well-known converter with a published deletion policy. For private files, the safer choice is a converter that never receives them.