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Free · No sign-up · Runs in your browser

Convert anything to PDF.

Word, Excel, PowerPoint, text, web pages and images: drop in any mix, put them in order and get one tidy PDF, or one PDF each. Every file is converted on your device and nothing is uploaded.

Not uploaded — nobody sees it Mix file types in one PDF Add existing PDFs too No sign-up, no watermark
With several files, make
Your images are never uploaded — they’re processed right here in this browser tab, on your device. They never reach a server, so we never see them, copy them or keep them.
At a glance

Convert to PDF: quick facts

One drop zone for every kind of file you’d want as a PDF.

Updated

Price
Free. No sign-up, no watermark.
Converts
Word (.docx), Excel (.xlsx), PowerPoint (.pptx), text (.txt), web pages (.html) and images, plus existing PDFs.
Output
One combined PDF in the order you choose, or one PDF per file in a .zip.
Quality
The same converters as Altto’s single tools, at their default settings.
Privacy
Everything happens in your browser. Nothing is uploaded.
How it works

How to convert files to PDF and combine them

Each file is handed to the matching Altto converter inside this browser tab. The PDFs it makes are then joined page by page, in the order you set.

01

Add your files

Drop in Word, Excel, PowerPoint, text, HTML, images or PDFs, in any mix.

02

Put them in order

Use the arrows, then choose one combined PDF or one PDF each.

03

Download

Your PDF saves straight away; separate PDFs come in a .zip.

Tips

Getting the PDF you want

A few things that make a combined PDF come out right first time.

  • Put them in order firstUse the arrows beside each file to set the order. In a combined PDF the pages follow that order exactly, so a cover letter goes first and appendices last.
  • Need page numbers or a smaller file?When the PDF is ready, the "What next?" box under the result takes it straight to Add Page Numbers, Compress PDF or Sign PDF with the file already loaded.
  • Old .doc, .xls or .ppt files?Save them as .docx, .xlsx or .pptx first (File, then Save As, in any version of Office from 2007 on), then add them here.
  • Want more control over one file?The single converters have extra settings, such as page size for images. Use Image to PDF or HTML to PDF for those, then add the result here to combine it with the rest.

Like every Altto tool, this runs on your device — nothing you add is uploaded. How Altto works

6 in 1

Word, Excel, PowerPoint, text, web page and image converters behind one drop zone, with merging built in.

FAQ

Frequently asked questions

What to expect when you turn a mix of files into a PDF.

Which files can I turn into a PDF?
Word documents (.docx), Excel spreadsheets (.xlsx), PowerPoint presentations (.pptx), text files (.txt), web pages saved as .html, and images (JPG, PNG, WebP, HEIC, AVIF, GIF, BMP). You can also add existing PDFs, so they’re included when you combine everything into one file.
Can I combine different types of file into one PDF?
Yes. Add them in any mix, put them in the order you want with the arrows, and choose One combined PDF. Each file is converted and the pages are joined in that order.
Are my files uploaded?
No. Every file is converted inside your browser tab, on your device, and the PDF is put together there too. Nothing is sent to a server.
Is it the same as the single converters?
Yes. Behind the scenes each file goes through the same converter as Altto’s single tools (Word to PDF, Excel to PDF, PowerPoint to PDF and so on), using their default settings, so the result is the same. Use a single tool when you want its extra options.
What about old .doc, .xls or .ppt files?
Those older formats aren’t supported. Open the file in Word, Excel or PowerPoint (or a free office app), save it as .docx, .xlsx or .pptx, and add that. Or use the app’s own Print → Save as PDF.
Can I get one PDF per file instead?
Yes. Choose One PDF each and every file becomes its own PDF, all downloaded together in a .zip.
What happens with a password-protected PDF?
It can’t be read without its password, so it’s left out and you’re told which one. Unlock it first with Unlock PDF, then add it again.
More tools

Single converters and PDF tools

Word to PDFTurn a .docx file into a PDF.
Excel to PDFTurn a spreadsheet into a PDF.
PowerPoint to PDFTurn a .pptx file into a PDF.
Image to PDFCombine JPGs or PNGs into one PDF.
Merge PDFCombine multiple PDFs into one file.
Compress PDFShrink a PDF’s file size.