Image to PDF Converter

How it works

The converter follows the same simple logic a print shop would. First, add your images by dropping them onto the panel above or browsing for them. The tool reads each file locally, notes its pixel dimensions and shows you a thumbnail, so you can confirm you picked the right scan or photo before anything is built. Second, arrange the list. The order on screen is the order in the PDF, from page 1 onwards, so put a cover sheet, a signed form or the front of an ID card exactly where a reader expects to find it.

Third, choose a page size and margin. For A4 and Letter, the converter looks at each image's shape and picks portrait or landscape for that page automatically — a wide group photograph is never squeezed sideways onto a tall page, and a tall scanned letter is never shrunk to fit a wide one. Every image is then scaled to fit inside your chosen margins while keeping its original aspect ratio, and centred on the page, so nothing is stretched, cropped or distorted. Finally, press the convert button: the pages are written into a single PDF file called images.pdf and downloaded straight to your device, ready to print, email or upload to a portal that asks for one combined document.

Who uses it, and for what

Scanned documents are the most common job. Many home scanners and phone scanning apps save each page as a separate JPG, yet schools, employers, banks and government portals usually insist on one PDF containing every page. Adding the pages here, in reading order, solves that mismatch in a minute. The same applies to ID documents: a front and back of a driving licence, a passport photo page and a proof-of-address letter become one clean file instead of three loose attachments with confusing camera filenames.

Photo albums are the second big use. A birthday, a school trip or a house renovation photographed step by step is far easier to share as one PDF than as forty separate images that arrive out of order in a chat thread. Choose Fit to image so each page matches the photo itself, and relatives can flick through the album on any device without a special app. Creatives use it for portfolios, too: designers, photographers and illustrators drop in finished pieces, add a cover image first, and send clients a single tidy file that looks deliberate on screen and on paper. Students and teachers use it to bundle worksheet photos, whiteboard snapshots and handwritten homework into one submission, and small businesses use it to combine product photos, invoices and delivery notes for a customer or an accountant.

Features and specifications

A note on print quality and DPI: a PDF page is measured in millimetres, but sharpness comes from the pixels in your original image. An A4 page printed at 150 DPI needs roughly 1,240 × 1,754 pixels, and a truly crisp 300 DPI print needs about 2,480 × 3,508 pixels. Most modern phone cameras comfortably exceed the 150 DPI mark for A4, which looks sharp at normal reading distance. Small web images and screenshots still convert perfectly well — they will simply look softer if printed very large, so keep the original file whenever print quality matters.

Practical tips for a better PDF

Start from the best original you have. If a document was shared with you through a messaging app, ask for the original file instead, because those apps usually shrink photos before sending them. Photograph paper documents in bright, even light, square-on to the page, and check each thumbnail here for glare or a thumb in the corner before you convert — rebuilding takes seconds, but only if you spot the problem while the paper is still in front of you.

Match the settings to the destination. Sending a form to an office that will print it? Pick the paper size that office actually uses — A4 in most of the world, Letter in the United States and Canada — and keep at least a small 10 mm margin so no home printer clips the edges. Sharing photos on screen only? Fit to image avoids empty white borders entirely. Name your pages by ordering deliberately: put the most important page first, because many portals preview only the first page, and a reader who sees a blank or upside-down opening page may assume the whole file is wrong. Finally, open the downloaded images.pdf once before you send it anywhere. A ten-second check of page order, orientation and legibility is the cheapest insurance against a rejected application or a confused client.

Frequently asked questions

Are my images uploaded to a server when I use this converter?

No. Every step happens locally in your browser. Your images are read from your device, previewed on this page and written into the PDF on your own machine. Nothing is uploaded, stored or shared, which makes this tool suitable for ID documents, contracts and other private paperwork. Closing the tab removes everything from the page.

Which image formats can I convert to PDF?

You can add JPG and JPEG photos, PNG images and WebP files — the three formats produced by most phones, scanners and screenshot tools. Each image becomes one page of the PDF, in the exact order shown in the list. Transparent PNG images are placed on the page as they are, and screenshots keep their original sharpness when you choose a small margin.

Should I choose A4 or Letter page size?

Choose A4 (210 × 297 mm) if you are in Europe, Asia, Australia or most other regions, because it is the standard office and home printer size there. Choose Letter (216 × 279 mm) for the United States and Canada. Choose Fit to image when you do not plan to print and simply want each page to match the shape of the original picture, for example for a photo album shared on screen.

How do I change the order of pages in the PDF?

Use the up and down arrow buttons beside each image in the list. The image at the top of the list becomes page 1, the next becomes page 2, and so on. Check the order before converting, especially for scanned documents where the cover page, ID pages and supporting pages need to arrive in a logical sequence for the person reading them.

Will my photos lose quality in the PDF?

The converter embeds the image data you supplied instead of re-photographing or heavily re-compressing it, so a sharp original stays sharp. For the best print results, start from the original camera file rather than a thumbnail sent through a messaging app, keep margins small so the image prints larger, and remember that a photo needs roughly 150–300 pixels per printed inch for crisp results.