How to Combine Images into a Single PDF (Without an Account)
You have a folder of JPGs or PNGs and you need them as one PDF. The reasons are common: a job application that asks for a single PDF of your photos, an insurance claim with a receipt and three damage photos, a homework submission where the assignment was "scan your hand-drawn pages and submit a PDF". Most online forms accept exactly one file — a PDF — and won't let you upload a ZIP or attach images one at a time.
The job is mechanical: take N images, embed each on its own page, glue them together, save. Modern phones and laptops will let you do this through their native print-to-PDF dialog (often), but the result is unpredictable on margins, page order, and orientation. A dedicated tool is faster and more controllable.
Convert in your browser
Buncha's Image to PDF does the job client-side. Drop your images, drag to reorder, pick a page size, download the PDF. Nothing uploads.
The conversion uses pdf-lib (a JavaScript PDF library that runs entirely in the browser). It embeds each image at its native resolution, places it on a page sized to your choice, and writes a standard PDF. Output is a normal PDF that opens anywhere.
Drag-to-reorder
This is the feature that matters more than people expect. Drop a folder of JPGs and the OS sorts them by filename — which is fine if your files are 01.jpg, 02.jpg, ... but a mess if they're iPhone names like IMG_4827.jpg, IMG_2914.jpg. The tool lets you drag the thumbnails into the right order before exporting.
If you do want filename order, the tool defaults to that — drop a set with leading zeroes and you don't need to drag.
Page size — A4, Letter, or Fit
- Fit to image: each page is exactly the size of the image. Best for screenshots or anything where you want zero whitespace.
- A4 / Letter: standard print sizes. Each image is centered on the page with a small margin. Best for forms or portfolios that will be printed.
- Custom: set width and height in mm or inches. For a printer with a non-standard size or a specific job spec.
If you're not sure: A4 if you're outside the US, Letter if you're inside the US, Fit if the destination doesn't care.
Orientation
If your images are a mix of landscape and portrait (which they almost always are), the tool can either:
- Match each page to the image — landscape photo gets a landscape page, portrait gets portrait. Recommended for most cases.
- Force everything to portrait (or landscape) — uniform page orientation, with images rotated or letterboxed to fit. Useful for printed booklets.
Image quality
The tool embeds the images at full resolution by default. A 12-megapixel iPhone photo at A4 is about 3 MB inside the PDF. If you have 20 of those, your PDF is 60 MB.
Most online forms cap PDFs at 5 or 10 MB. If you're hitting the limit:
- Drop the JPG quality to 75% (saves ~30%)
- Pre-shrink the images via the Image Compressor
- Or, after the PDF is built, run it through PDF Compress for the last bit of size reduction
HEIC, WebP, and other formats
iPhone HEICs work — convert them first via HEIC to JPG since browser PDF rendering for HEIC is patchy. WebPs work directly. PNGs work but produce bigger PDFs (PNG isn't compressed inside the PDF the way JPG is).
Why not use the OS print-to-PDF
Print-to-PDF on macOS and Windows works, but with limitations:
- You have to open each image and trigger Print → Save as PDF → repeat. There's no batch.
- Or you select multiple in the file manager, but the page order is whatever the file manager picks.
- Page sizing defaults to your printer's setting, often US Letter even outside the US.
- No reorder UI.
For a one-image quick PDF, print-to-PDF is fine. For a real bundle, the browser-side tool is faster.
The shortest path
Open Image to PDF, drop the images, drag to set the order, pick A4 or Letter, download. One file, one click.