What makes an image-to-PDF converter the "best"?
Image-to-PDF is deceptively simple — every screenshot tool and print dialog can do it. But the best image-to-PDF converters in 2026 go further: they let you reorder images, set page size and orientation, adjust margins, choose fit/cover, embed multiple images per page, and produce a clean PDF without watermarks or forced signups.
We compared six of the most-used image-to-PDF converters in 2026 — PrivacyScanPDF, iLovePDF JPG-to-PDF, Smallpdf JPG-to-PDF, Adobe Acrobat Online, PDF24 Image-to-PDF, and ILoveIMG JPG-to-PDF — on the things that actually matter: privacy, batch support, output control, and price. The table below summarizes the differences; the per-tool notes after that give you the detail.
Image-to-PDF comparison table (2026)
PrivacyScanPDF is the only tool in this list that runs entirely in your browser. Every other tool here uploads your images to a remote server for processing — which matters more than usual for image-to-PDF, because the images people convert are often ID scans, passports, or medical photos.
1. PrivacyScanPDF — best private batch converter with full page control
PrivacyScanPDF converts JPG, PNG, HEIC, WebP, GIF, BMP, and TIFF into a single PDF entirely in your browser. Drag-and-drop to reorder, choose page size (A4, Letter, Legal, or Fit-to-image), pick orientation, set margins, toggle fit/cover per image. Nothing is uploaded.
The trade-off: very large batches (50+ high-res images) can be slow on weak devices. There's no built-in OCR (use the separate PDF OCR tool for that). For everything else — receipt scanning, ID conversion, photo books — it covers the bases that the other tools here miss.
2. iLovePDF JPG to PDF — best quick one-off converter
iLovePDF's JPG-to-PDF tool is fast, supports drag-to-reorder, and offers three page-size options (Fit, A4, Letter). It's the most popular online image-to-PDF converter and the UI is recognizable if you've used any other iLovePDF tool.
The catch is the same as everything else iLovePDF does: your images are uploaded to their servers. The 25 MB total upload limit on the free tier catches people with high-res phone photos. HEIC isn't supported on the free tier — a real issue for iPhone users, since HEIC is Apple's default since 2017.
3. Smallpdf JPG to PDF — best for Pro-plan users
Smallpdf's JPG-to-PDF tool has a clean UI and works well, but batch conversion (more than one image) is gated behind the Pro plan. On the free tier, you can convert one image at a time and you're capped at 2 tasks per day.
If you already pay for Smallpdf Pro, the tool is fine. If you don't, there's no reason to subscribe just for this — PrivacyScanPDF and PDF24 both do batch for free.
4. Adobe Acrobat Online — best in the Adobe ecosystem
Adobe Acrobat Online handles image-to-PDF conversion as part of its broader Create PDF flow. It works well, supports most image formats, and integrates with Adobe Document Cloud. OCR is available as a follow-on step if you need searchable text.
The right choice if you're already paying for Acrobat Pro. Otherwise $12.99/month to convert images to PDF is hard to justify, especially when the free alternatives here do the same thing without the upload-or-pay decision tree.
5. PDF24 Image to PDF — best free desktop alternative
PDF24's image-to-PDF tool supports batch conversion and basic page-size control (A4 / Letter) and is genuinely free with no daily limits. Their free Windows desktop app does the same thing locally — the closest desktop alternative to PrivacyScanPDF's browser-based approach.
The web version uploads your images (GDPR-aligned EU hosting, but still an upload). The UI is utilitarian. Fewer page-size options than PrivacyScanPDF. For Windows users who want a non-browser option, this is the pick.
6. ILoveIMG JPG to PDF — best for casual one-image conversions
ILoveIMG (a sister site to iLovePDF) offers a clean JPG-to-PDF tool that handles batch conversion and outputs clean PDFs. It's optimized for casual users who want one-click conversion without thinking about page size or orientation.
The page-size control is limited to 'Fit' or 'A4' — no Letter, no Legal, no fit-to-image. No orientation toggle. No HEIC or WebP support. The 25 MB upload limit on the free tier is the same as iLovePDF's. Fine for a quick one-off, frustrating for anything more serious.
Which image-to-PDF converter should you pick?
For photos that contain personal information — ID scans, passports, medical records, anything with an address — use PrivacyScanPDF. The browser-only architecture means the images never leave your device, which is the only way to guarantee privacy.
For casual one-off conversion of non-sensitive images, iLovePDF or ILoveIMG work fine. For free unlimited conversion with a desktop app, PDF24 is solid. For Adobe ecosystem users, Acrobat Online is bundled. For everything else — and especially for sensitive photos — PrivacyScanPDF is the right default in 2026.