How to Convert Images to PDF — Free, No Upload
A government form asks for your documents "as one PDF." Your client wants the mockups in a single file, not twelve separate JPGs. Your professor requires homework scans submitted as PDF. The need is always the same: images in, PDF out. Here's how to do it without uploading anything to a server.
Why PDF Instead of Just Sending the Images
PDF does three things that a pile of image files doesn't. It keeps everything in a fixed order — page 1 is always page 1, regardless of how the recipient's file manager sorts things. It combines multiple files into one, which is easier to attach, email, upload, and archive. And it prints predictably — the layout you set is the layout that comes out of the printer, on any machine, on any operating system.
Try it free: Image to PDF — Convert one or more images into a PDF document. Runs in your browser, no signup needed.
That's why virtually every form submission, job application, and document workflow asks for PDF. Not because the format is better at storing images (it isn't — it just wraps them), but because it standardizes the viewing and printing experience.
Using the Image to PDF Tool
Open the Image to PDF converter and upload your images. You can select multiple files at once, or drag and drop a batch onto the upload area. The tool accepts JPEG, PNG, WebP, GIF, BMP, TIFF, AVIF, and even HEIC (iPhone photos).
Each image becomes one PDF page. Before generating, you can reorder pages using the up/down arrows next to each thumbnail — no need to rename files or upload in a specific order. If you missed a file, the "Add More Images" button lets you append without starting over.
Choose your page settings: A4, Letter, A3, A5, Legal, or "Fit to Image" (which makes each page match the image dimensions exactly). Pick portrait or landscape orientation. Set a margin width — 10px is the default, 0px gives edge-to-edge images. Adjust the quality slider if file size matters. Then hit Generate PDF.
The PDF is built entirely in your browser using jsPDF. Your images stay on your device from start to finish. Download the result and you're done.
Need a PDF? Upload your images, reorder pages, pick a page size, and generate — free, no upload.
Convert Images to PDF →Picking the Right Page Size
The page size controls how the image is placed on the page, not how the image itself is scaled. The tool fits each image within the page dimensions (minus margins) while maintaining its aspect ratio. This means a landscape photo on a portrait A4 page will center in the upper portion with white space below.
A4 (210 × 297 mm) — Standard in most of the world. Use this for document submissions, printed reports, and anything going to a European or international audience. Most office printers default to A4.
Letter (8.5 × 11 in) — Standard in the US and Canada. Use this for American forms, US-based job applications, and anything being printed in North America.
Fit to Image — Each page matches the exact dimensions of the image. No white borders, no scaling. This is the right choice when you're creating a PDF for digital viewing (screen presentations, emailing reference images, portfolio PDFs where layout precision matters) rather than printing on standard paper.
A3 — Double the area of A4. Use for poster-sized images, large diagrams, or architectural drawings that lose detail at smaller sizes.
💡 Portrait vs landscape
If your images are a mix of portrait and landscape orientations, pick whichever matches the majority. The tool will fit each image within the page regardless of orientation — a landscape photo on a portrait page just gets more white space above and below. For mixed sets, "Fit to Image" avoids the problem entirely by matching each page to its image.
Quality, File Size, and the Trade-off
The quality slider (10–100%) controls JPEG compression inside the PDF. At the default 92%, an image that's 4 MB as a standalone JPEG will embed at roughly the same visual quality. Dropping to 75% noticeably reduces PDF file size — useful when email attachment limits are tight — but introduces compression artifacts on sharp edges and text.
For scanned documents and receipts where text readability matters, stay above 85%. For photo portfolios where visual quality is the point, keep it at 90–95%. For casual "just get it into a PDF" tasks, the default 92% is fine without touching the slider.
If your PDF is still too large after adjusting quality, consider compressing the source images first. The Image Compressor can reduce each image individually with a before/after preview, and the Image Resizer can shrink dimensions — a 4000×3000 image resized to 2000×1500 before conversion produces a much smaller PDF than compressing the full-resolution version.
Common Workflows
Scanning documents with your phone. Take photos of each page with your phone camera. Transfer them to your computer (or open the tool directly on your phone). Upload all images, set page size to A4 or Letter, and generate. The result is a multi-page PDF of your scanned document. For better scans, use the Document Scanner first — it straightens perspective, adjusts contrast, and crops borders automatically.
Submitting ID or form photos. Government portals and job applications often want a single PDF with your ID front, ID back, and a recent photo. Upload the three images, reorder if needed, and generate. Fit to Image works well here since the forms usually don't specify page size — they just want one file with all images.
Creating a simple portfolio. Upload your best work in the order you want it presented. Use Fit to Image so each piece displays at its native dimensions without awkward margins. Set quality to 95% to preserve detail. The output is a clean, portable PDF you can email or upload to portfolio platforms that accept PDF.
Archiving receipts and invoices. Photograph receipts before they fade. Upload the batch, convert to PDF, and file it. Each receipt gets its own page, and the whole month fits in one searchable file. If you need to extract text from those receipts later, the Receipt Scanner does OCR directly on the images.
What About PDF to Image?
The reverse workflow — extracting images from an existing PDF — is a separate tool. The PDF to Image converter renders each PDF page as a PNG or JPEG at your chosen resolution. Useful when someone sends you a PDF and you need individual images for editing, sharing on social media, or embedding in a presentation.
For extracting text from a PDF rather than converting it to images, see the PDF text extraction guide. The Text Scanner handles both PDFs and images with OCR in over 100 languages.
Common Questions
How do I combine multiple images into one PDF? Upload all images to the Image to PDF tool. Each image becomes one page. Reorder with the arrow buttons, choose page size, and click Generate PDF. You can add more images after the initial upload.
Which page size should I use for printing? A4 for most of the world, Letter for the US and Canada. If you're not printing — just sharing a digital file — use Fit to Image so each page matches the image exactly, with no white borders.
Does converting to PDF reduce image quality? At the default 92% quality setting, the difference from the original is negligible. The tool embeds images as JPEG data inside the PDF, so the quality slider controls how aggressively images are compressed. Staying above 85% keeps text readable and photos sharp.
One File, Done
Most image-to-PDF tasks take under a minute. Upload, reorder if needed, pick a page size, generate, download. No account, no watermark, no "processing on our servers." The PDF builds locally and the images never leave your browser. If the result needs further work — stripping metadata, checking print readiness, or running OCR — the rest of the toolkit is one click away.