Best JPG to PDF Apps for iPhone (2026 Comparison)
Introduction
If you’re looking for the best JPG to PDF app for iPhone in 2026, this guide compares the five apps most people actually use, scored on the dimensions that matter: free-tier watermarks, daily limits, batch size, privacy, OCR. Quick disclosure: ConvertPDF is our own app, so I’ll be explicit about where it wins and where it doesn’t.
Just need to convert one JPG to PDF on iPhone right now without installing anything? Open the photo in the Photos app → Share → Print → pinch outward on the preview → Share the resulting PDF. It’s built into iOS and free. For deeper workflows — batch conversion, multi-page PDFs, no watermark on output, no upload — keep reading.
If you want a step-by-step walkthrough for the convert action specifically (not app comparison), our JPG to PDF on iPhone tool page covers that without app install.
Free in-browser conversion, no signup: Convert JPG to PDF online
Comparison table — top 5 JPG to PDF apps for iPhone
| App | Free tier | Watermark | Batch | Privacy | OCR | Best for |
|---|---|---|---|---|---|---|
| ConvertPDF | Unlimited on app, 5/day on web | None ever | 20 pages | Browser-only on web (no upload) | No | One-tap conversion, no watermark |
| Adobe Acrobat Reader | 1 convert/day free, then paywall | None | Unlimited (paid) | Cloud upload | Yes (paid) | Heavy editing, OCR |
| Smallpdf | 2/day free | Watermark on free | 5 files (paid) | Cloud upload | Yes (paid) | Cloud-integrated workflows |
| iLovePDF | 3/day free | Watermark on free | 25 MB cap | Cloud upload | Yes (paid) | Batch + format conversion |
| PDF Expert | Free reader, paid editor | None on conversion | Unlimited (paid) | Local-first | Yes (paid) | Power users who’ll pay |
| Built-in iOS Photos | Unlimited | None | Multiple (no reorder) | Local only | No | Quick one-off conversion |
Detailed reviews
1. ConvertPDF (our own app) — best for no-watermark free conversion
Free tier: unlimited conversions in the iOS app; 5 per day on the web tool. Watermark: none, ever, on any tier. Privacy: the web tool runs conversion entirely in your browser via JavaScript — your photo never uploads to a server. The iOS app processes locally on-device.
What we do well: zero-friction conversion. Open app or web page, pick photo, get PDF. No signup, no email, no credit card. The free tier is the actual product — not a trial of the paid tier.
What we don’t have: OCR (turning the text in your JPG into searchable PDF text), no cloud sync, no advanced editing. If you need any of those, scroll down to Adobe Acrobat.
Get it: App Store or use the web at convertpdfonline.net/jpg-to-pdf/.
2. Adobe Acrobat Reader — best for editing and OCR
Free tier: view PDFs unlimited; convert JPG to PDF 1 per day on free, more requires Acrobat Pro subscription ($19.99/month). Watermark: none on any tier. Privacy: files go through Adobe’s cloud for OCR and conversion.
Adobe Acrobat is the canonical PDF editor. If you scan documents and need to OCR the text, edit text after conversion, sign forms with binding e-signatures, or redact information so the original text can’t be recovered — Acrobat is the only iOS app that does all of these well.
Trade-off: the free tier is essentially a sales funnel. Real use requires paying.
3. Smallpdf — best for cloud-integrated workflows
Free tier: 2 conversions per day, with watermark on output. Pro: $12/month for unlimited and no watermark. Privacy: files upload to Smallpdf servers (Switzerland-hosted, GDPR-friendly).
Smallpdf shines if you already use cloud storage (Dropbox, Google Drive, OneDrive) — it picks up files from those services directly. The UI is the cleanest of the freemium options.
Trade-off: free output is watermarked, which makes the free tier useless for anything you’d actually send to someone.
4. iLovePDF — best for batch + format conversion combo
Free tier: 3 conversions per day, watermark on free output, file size cap. Premium: $9.99/month. Privacy: files upload to iLovePDF servers.
iLovePDF combines JPG-to-PDF with 20+ other PDF tools (split, merge, compress, JPG-to-PDF, PDF-to-JPG, etc.) in one app. If you switch between many PDF operations daily, having all of them in one app is convenient.
Trade-off: same watermark-on-free issue as Smallpdf.
5. PDF Expert — best for power users willing to pay
Free tier: read PDFs, basic annotation. Editing, OCR, conversion require subscription ($79.99/year). Watermark: none. Privacy: local-first by default, optional iCloud sync.
PDF Expert is what professionals (lawyers, accountants, designers) buy when they need PDF editing on iPad/iPhone that matches desktop quality. The interface is the best in the category and the editor handles complex documents that crash other apps.
Trade-off: not free in any meaningful sense. The free tier is a viewer.
Honorable mention: built-in iOS Photos
iOS has built-in JPG-to-PDF conversion most users don’t know about. Open photo → Share → Print → pinch outward on the preview → it becomes a PDF you can share. Free, no app, no watermark.
Limits: one or multiple photos at a time but no reorder; no settings for page size, margins, quality; no batch beyond what you can fit on screen.
For 80% of “convert this receipt to PDF and email it” use cases, built-in is enough. The apps above earn their place when built-in falls short — multi-page docs, repeated workflows, OCR.
How to pick
Match the answer to your most-frequent task:
- One-off JPGs, no signup tolerance, no watermark → ConvertPDF (or just the built-in iOS Photos share sheet for one image)
- Lots of conversions per day, willing to keep app installed → ConvertPDF iOS app (unlimited free)
- You need to OCR scanned documents → Adobe Acrobat (only one of these with OCR on iOS)
- You manage PDFs across many apps and cloud storage → Smallpdf or iLovePDF
- You’re a professional and PDFs are part of daily work → PDF Expert
For just the convert action (no app comparison shopping), see our dedicated JPG to PDF on iPhone walkthrough — it covers built-in iOS methods, browser workflow, and the app, without the comparison overhead.
Common pitfalls when picking a JPG to PDF app on iPhone
- App Store rating is misleading. Apps with 4.8 stars often have watermarks or hard daily limits in the free tier that drop them to 2-star territory once you actually use them. Read recent 1-star reviews — they describe the watermark and paywall issues honestly.
- “Free” usually means “free trial”. Adobe Acrobat Reader is genuinely free for reading but paywalls conversion. Smallpdf and iLovePDF watermark free output. Only ConvertPDF and built-in iOS Photos are free in the “actually free forever” sense.
- Privacy varies a lot. Conversion that runs in your browser (or on-device in the app) is more private than conversion that uploads to a server. For sensitive documents — tax forms, signed contracts, medical records — prefer the on-device options.
- OCR is the big differentiator. Most apps don’t include it on iOS. If you need searchable text in the output PDF (so you can
Cmd+Flater), Adobe Acrobat is currently the only solid free-tier option.
Related guides
- JPG to PDF on iPhone — step-by-step walkthrough — the howto, not app comparison
- How to convert JPG to PDF on iPhone (blog) — long-form howto with screenshots
- How to convert multiple photos to PDF on iPhone — batch-specific
- How to scan and edit a PDF document — if you need OCR after conversion