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Need help?Merge Images into One PDF — Free, No Watermark
To merge images to PDF, add your JPG, PNG, HEIC, TIFF, WebP, or RAW files in any order, then drag the thumbnails to reorder the pages exactly how you want before merging. Pick a paper size and click Merge — each image becomes one page and the combined PDF downloads from our servers with no sign-up and no watermark.
Real result: twelve phone photos (~3 MB each) merge into one 12-page PDF — one attachment instead of twelve, page order locked exactly as arranged. At the default 75% quality, the merged PDF stays within ~5-10% of the combined source size for JPG inputs.
How to Merge Images to PDF Online
- Upload Your Images: Drag and drop or click "+ Add Files" to select photos and scans from your computer. Accepts JPG, PNG, HEIC, TIFF, WebP, BMP, GIF, AVIF, PSD, and camera RAW formats (CR2, NEF, ARW, DNG, RAF, ORF, and more). Drag uploaded thumbnails to set the page order — each image becomes one PDF page.
- Choose Combine and Paper Size: Leave "Combine" on "Single PDF" to merge everything into one document, or switch to "Individual PDFs" to convert each image separately. Pick a "Paper size" — A4 (210x297 mm) is the default, with US Letter, Legal, Tabloid, A3, Executive, ISO B4/B5, and "Original" (size each page to its image) also available.
- Set Layout, Margin, and Image Placement (Optional): Choose "Portrait" or "Landscape", then a margin: No margin (0"), Narrow (0.5"), Moderate, Normal (1"), or Large. Under "Image placement", pick "Contained" to letterbox the image without cropping, or "Cover" to fill the page. Use "Image alignment" (Top / Center / Bottom) and the "Image Quality (%)" slider (default 75) for fine control. Set "Image Transparency" to "Removed" if you need a flat white background instead of see-through PNGs.
- Merge and Download: Click "Merge". Pages are assembled in the order you arranged them and the finished PDF downloads directly — no sign-up, no watermark.
Why Merge Images to PDF?
A PDF wraps a sequence of images into a single, paginated document that prints predictably, holds its layout across operating systems, and stays archivable for decades. That's why receipts, ID scans, passport copies, photo portfolios, and submission packets are almost always asked for as one PDF rather than a folder of JPGs.
- Document submissions that require a single file — Visa applications, USCIS forms, college and Common App uploads, bank KYC portals, and most government e-filing systems accept exactly one PDF per slot. Photographing each page and merging them is faster than scanning, and the page order is locked in.
- Scanned receipts, contracts, and handwritten notes — Phone-camera scans are saved as separate JPG/HEIC files. Merging them produces a numbered document you can email, sign, or store next to the original transaction.
- Photo portfolios and pitch decks — One PDF preserves image quality at any zoom level and opens identically on Mac Preview, Windows, iPad, and any browser — no missing fonts, no broken slide template.
- Long-term archival — PDF is the only image-bearing format covered by an ISO archival standard (ISO 19005 / PDF/A, first published 2005). Compared to keeping loose images, a merged PDF is easier to back up, version, and migrate.
- iPhone HEIC into a universal file — Phones produce HEIC, which Windows and many web portals reject. Merging HEIC photos into a PDF converts and combines in one step. See HEIC to PDF if all your sources are HEIC.
- Reduce attachment clutter — Email caps (Gmail 25 MB, Outlook.com 20 MB per message) apply per file too — one PDF means one attachment to manage instead of twelve.
Paper Size Cheat Sheet
| Preset | Dimensions | Typical use |
|---|---|---|
| Original | Matches each image | Photo books, screenshots — no whitespace |
| A4 (default) | 210 x 297 mm / 8.27 x 11.69 in | International standard for letters, reports, forms |
| US Letter | 8.5 x 11 in / 216 x 279 mm | North American documents, resumes, contracts |
| US Legal | 8.5 x 14 in / 216 x 356 mm | US legal filings, leases, long forms |
| Tabloid / Ledger | 11 x 17 in / 279 x 432 mm | Spreads, drawings, large prints |
| A3 | 297 x 420 mm / 11.69 x 16.54 in | Posters, two-page A4 spreads |
| Executive | 7.25 x 10.5 in / 184 x 267 mm | Compact memos, ebook layouts |
| ISO B4 / B5 | 250 x 353 / 176 x 250 mm | Books, magazines (mostly non-US) |
A4 vs Letter is the most common confusion: A4 is taller (11.69 in) and narrower (8.27 in), Letter is shorter (11 in) and wider (8.5 in). When in doubt, pick the size your recipient prints on.
Image Placement and Margin Guide
| Setting | What it does | When to use |
|---|---|---|
| Placement: Contained | Image fits entirely on the page; whitespace fills the rest | Receipts, screenshots, mixed aspect ratios — no cropping |
| Placement: Cover | Image fills the page; edges may be cropped to match paper aspect | Photo books, edge-to-edge presentation |
| Margin: No (0") | Image sits flush to the page edge | Photo prints, edge-to-edge layouts |
| Margin: Narrow (0.5") | Default — small safe zone | General documents |
| Margin: Normal (1") | Standard letter/report margins | Forms expecting print margins, ring-binder pages |
| Margin: Large (2x1") | Wide outer margin | Binding, annotation room |
| Alignment: Top/Center/Bottom | Controls where the image sits when smaller than the page | Receipts at top, photos centered, footers at bottom |
Frequently Asked Questions
How do I combine multiple images into one PDF?
Upload all your images, drag the thumbnails to set the order you want, leave "Combine" on "Single PDF", and click Merge. Each image becomes one page and our servers assemble them into a single document. Page order follows the thumbnail order you arrange — not the filenames.
How many images can I merge into one PDF?
There's no fixed limit on the number of images — the practical ceiling is the size of the output file, not the image count. Dozens of phone photos merge into one PDF without a problem. If the combined file gets large, lower the "Image Quality (%)" slider or run the result through Compress PDF to stay under email and upload caps. If it still exceeds a portal's limit, Split PDF breaks the merged document into smaller parts you can submit separately.
Will my PDF be smaller than the sum of the source images?
Usually yes when sources are PNG, BMP, or TIFF — the merge re-encodes them with JPEG-style compression at the "Image Quality" you set (default 75%). For JPG sources at default quality, the PDF is typically within 5-10% of the combined source size. To minimize file size further, drop quality to ~60 or run the result through Compress PDF.
Can I rearrange the page order before merging?
Yes. After uploading, drag thumbnails to set the order — first thumbnail becomes page 1, second becomes page 2, and so on. There is no "ascending filename" auto-sort, so the order you arrange in the UI is exactly what you get. For other PDF edits and annotations, we recommend ProPDF.com.
Do you keep image quality, or does the PDF look softer?
Images embed at their original pixel dimensions. The "Image Quality (%)" slider controls only the JPEG compression applied during embedding — at 90-100% you get visually lossless output for photos. PNG sources convert to JPEG inside the PDF by default; if you need lossless PNG inside the PDF, drop transparency from "Unchanged" to "Removed" only when you're sure it won't matter for your use case.
What's the difference between "Single PDF" and "Individual PDFs"?
"Single PDF" combines every uploaded image into one multi-page PDF — what most people want. "Individual PDFs" converts each image to its own one-page PDF and packages the results as a zip download — useful when you need a batch of separate documents, like one receipt PDF per scan.
Can I mix JPG, PNG, HEIC, and TIFF in the same PDF?
Yes. Drop any combination of accepted formats and they'll all be embedded in page order. HEIC from iPhone, PNG screenshots, and TIFF scans can sit side by side. The page size you pick applies uniformly — choose "Original" if you want each page to fit its own image.
Can I merge images to PDF on iPhone or iPad?
Yes — it runs in mobile Safari or Chrome with no app to install. Add your photos, drag the thumbnails to reorder them, and the finished PDF downloads right on your device. iOS Files has a built-in "Create PDF" too, but this tool adds drag-to-reorder and lets you mix formats like HEIC, PNG, and JPG in one document.
Will the output PDF work on iPhone, Android, and old Acrobat versions?
Yes. The output uses standard PDF (compatible with PDF 1.4+) — opens in Apple Preview, Adobe Acrobat (all versions since 2001), Chrome/Edge/Firefox/Safari built-in viewers, iOS Files app, Google Drive, and Android PDF viewers. No font embedding issues because there's no text — only images.
Is the output PDF searchable or OCR'd?
No — these tools embed images as images. The resulting PDF behaves like a scanned document: pages render perfectly, but text inside the images is not selectable. If you need searchable PDFs for receipts or contracts, run the output through an OCR step (Adobe Acrobat, Tesseract, or any OCR-enabled service) after merging.
Can I make a PDF/A archival file from images?
Not directly here — output is standard PDF. For PDF/A conformance (ISO 19005), use a dedicated archival tool such as Acrobat Pro's "Save as PDF/A" or pdfa-convert. Archive use cases are still well-served by the standard PDF this tool produces; PDF/A mainly matters when a court, library, or compliance body explicitly requires it.
How is this different from converting one image to PDF?
A single conversion (like JPG to PDF or PNG to PDF) produces a one-page PDF. The merge tool here is designed for many images becoming one multi-page PDF in a chosen order. If you already have PDFs and need to glue them together, use Merge PDF instead.