Convert Images to PDF Without Installing Anything

Try what is already on the machine

On a computer you do not control, the safest move is software that is already installed and already approved. All three desktop systems can turn an image into a PDF with nothing added.

• Windows 10 and 11 — right-click the image and choose Print, then set the printer to Microsoft Print to PDF. On Windows 11 the compact right-click menu usually has no Print entry, so click Show more options first, or press Shift+F10 to go straight to the older menu. Select several images first and they come out as several pages. Full steps for Windows 11.
• macOS — open the image in Preview and export or print to PDF. Watch for the familiar trap where several selected images produce a PDF containing only one of them; that has a specific fix.
• ChromeOS — open the image, press Ctrl+P, and set the destination to Save as PDF. A school Chromebook will not run a Windows installer under any circumstances, so the browser routes are the only routes there.

If one of those gives you what you need, stop there. No download beats any download, and you do not need this page's converter.

Where the built-in route runs out

Print to PDF is a print driver doing the work. That is fine until the system viewer refuses to open your file, or until you need control over the result. The usual sticking points:

• The file is HEIC from an iPhone, or AVIF. On Windows, Photos will not open either without a codec add-on from the Microsoft Store — HEIC needs the HEVC Video Extensions, usually a paid item unless your PC maker pre-installed it, and AVIF needs the AV1 Video Extension — so on a machine where you cannot install anything there is nothing to print.
• You need a specific page size, a specific margin, or a page cut exactly to the picture with no white border.
• You need the images in a particular order, some of them rotated, one of them dropped.
• You need each image as its own PDF rather than one long document.
• The photo comes out sideways because of the orientation tag your camera wrote into it.

That is the point where a converter earns the tab.

How to convert an image to PDF without installing software

The converter above runs in the page you are reading. No account, no email address, no watermark, no installer.

1. Drag your images in, or click to pick them. JPG, PNG, HEIC/HEIF, TIFF, WebP, AVIF, GIF, BMP and SVG are all accepted. Camera RAW files (.dng, .cr2, .nef, .arw) are not.
2. Put them in order. Drag the thumbnails, or use the arrow buttons. Rotate any image in 90 degree steps, and remove the ones you do not want.
3. Pick a page size: A4, US Letter, US Legal, A3, A5, A6, Tabloid, or Match the image, which cuts the page to the picture at the resolution you choose. Then set orientation, margin (none, 6, 13 or 19 mm) and how the image fits the page.
4. Type a file name, and choose one merged PDF or separate PDFs in a ZIP.
5. Convert. The PDF is assembled in the tab and saved straight to your downloads.

What happens to quality is worth knowing. JPG and PNG normally lose nothing, because a JPEG's own compressed bytes are embedded exactly as they are rather than being decoded and squeezed again. Two things break that. If your camera wrote a mirrored orientation tag, which some front cameras do, the image has to be decoded and re-encoded to come out the right way round, and the converter says so on that file. And the image quality setting has a smaller file option that deliberately re-compresses. Leave quality on automatic or lossless and a JPG or PNG goes in untouched. HEIC, TIFF, WebP, AVIF, GIF, BMP and SVG have no place in the PDF format, so those are decoded and re-encoded once — JPEG at high quality for photographs, PNG for graphics and anything with transparency. An animated GIF or WebP contributes its first frame only. An SVG is rasterised at twice its declared size, so it does not stay vector. A multi-page TIFF becomes a multi-page PDF, one page per page.

In the browser is not the same as online

Plenty of the converters you will find for this are upload converters. Your file travels to somebody's server, is converted there, comes back, and then sits on their disk for as long as their retention policy says. For a screenshot of a bus timetable that hardly matters. For a payslip, a passport scan or a signed contract, it is the whole question.

An in-browser converter never sends the file. The page's JavaScript reads it out of the file picker, does the work on the processor in front of you, and hands back a finished PDF to save. On a managed laptop this is often the part that actually matters: installing software is what the policy blocks, but uploading a company document to a site nobody has vetted is what the policy exists to prevent.

From the outside the two are indistinguishable. Both are a web page with a drop zone and a convert button.

How to tell which one you are on

1. Open the developer tools — F12, or Ctrl+Shift+I, or Cmd+Option+I on a Mac — and go to the Network tab. Safari keeps these switched off until you tick the developer features box in Safari Settings, under Advanced.
2. Clear the list, then add your image and convert it.
3. Read the requests. An upload converter shows a POST whose payload is the size of your file, and a 4 MB photo leaving the machine is hard to miss in the Size column. A local converter shows no such request.

The other test people suggest is to load the page, disconnect from the network, then convert. The instinct is right, but a failure does not prove your file was uploaded. Local converters commonly fetch their own code on demand, and this one is no exception: it loads its PDF library, and the HEIC and TIFF decoders, the first time you need them. Pull the plug early and the conversion stops because code never arrived, not because your image left. The network tab tells those two apart, which is why it is the check worth doing.

Cannot install, or would rather not

Two different people arrive at this search, and the answer is the same for both.

The first cannot install. A work laptop with no admin rights, a device policy that blocks executables, a school-issued Chromebook with no concept of a Windows installer, a library or hotel machine, a friend's computer where leaving software behind would be rude. A browser tab needs none of that, and it leaves nothing behind when you close it.

The second could install and does not want to. A job you do a few times a year does not justify another program with an updater and a tray icon. Same tab, same result.

One thing will stop both of you: a machine that blocks downloads outright. Saving the finished PDF is a download, so if the policy kills that, no browser converter can help and the job has to move to a phone or a personal machine.

What an installed program still does better

Three things, honestly.

• Repeat work. A desktop tool can watch a folder or be driven from a script and convert hundreds of files overnight. A browser tab cannot. You have to be sitting there for every batch.
• Very large jobs. A tab only has the memory the browser gives it. This converter stops at 200 images or 600 MB in one batch, and refuses any single image over 80 megapixels, because that is as much as a browser tab can be relied on to hold. Archive-scale work belongs somewhere else.
• Scanning paper. Nothing in a browser beats holding a phone over a document, with edge detection and perspective correction doing the straightening for you.

There is no Windows or macOS build of this converter. The web page is the product.