Your iPhone can handle more PDF work than you probably think. I spent two weeks testing every free PDF editing method on iOS 18 – native tools, App Store apps, web-based editors, even Shortcuts automations. Here’s what actually works without spending money.
If you’re looking for desktop options too, check out our guide to the best free PDF editors which covers cross-platform tools that sync with your phone.
Quick Comparison: Free PDF Editing Options on iPhone
| Method | Text Edit | Annotate | Sign | Merge/Split | Compress | Free Limit |
|---|---|---|---|---|---|---|
| Apple Files + Markup | No | Yes | Yes | No | No | Unlimited |
| PDF Expert | Yes | Yes | Yes | No (paid) | No | Read + annotate free |
| Smallpdf | Yes | Yes | Yes | Yes | Yes | 2 tasks/day |
| iLovePDF | No | Yes | Yes | Yes | Yes | 2-3 tasks/day |
| Adobe Acrobat Reader | No (paid) | Yes | Yes | No (paid) | Yes | Annotate + sign free |
| Shortcuts Automation | No | No | No | Yes | No | Unlimited |
| Web editors (Sejda, PDFCandy) | Yes | Yes | Yes | Yes | Yes | 3 tasks/hour |
Method 1: Apple’s Built-in Tools (No Download Required)
This is what I use for 90% of my PDF tasks on iPhone. No app to install, no account to create, works offline.
Using Markup in the Files App
Open any PDF in Files, tap the Markup icon (looks like a pen tip in the top-right corner). You get:
- Drawing tools – pen, pencil, highlighter with color/thickness options
- Text boxes – tap the + button, select Text
- Shapes – rectangles, circles, arrows, speech bubbles
- Signatures – tap +, then Signature (your saved signatures appear here)
- Opacity slider for any element you add
What you can’t do: edit existing text, delete pages, rearrange page order, change fonts, or modify images embedded in the PDF. Markup only adds layers on top of the existing content.
Quick Markup from Other Apps
You don’t need to open Files first. When you receive a PDF in Mail, Messages, or Safari, long-press it, tap Share, then tap Markup. Same editing tools, and you can save back to Files or share directly when done.
Print to PDF Trick
Need to remove pages from a PDF? Open it, tap Share, tap Print. In the print preview, use two fingers to pinch-zoom on a page thumbnail – this opens it as a new PDF. Deselect the pages you don’t want by tapping their thumbnails. Then Share the resulting preview as a new PDF. Weird workaround, but it’s been on iOS since version 15 and works perfectly.
Method 2: PDF Expert by Readdle
I’ve been using PDF Expert since 2019. The free version is genuinely useful – not just a demo pushing you to subscribe.
What’s Free
Reading, annotating, form filling, signatures, bookmarks, text highlighting, search within PDFs, page thumbnails for navigation. You can also organize PDFs into folders within the app.
What’s Paid ($79.99/year)
Editing existing text, converting PDFs to other formats, merging documents, redacting content, adding links. Honestly the paid tier is expensive for occasional use.
My Take After 6 Years
If you just need to annotate and sign, PDF Expert’s free tier beats Adobe Reader in speed and interface. The app opens large PDFs (100+ pages) without lag, which is something Adobe struggles with on older iPhones. Where it falls short: no free merge/split, and the text editing requires the pricey subscription.
Method 3: Smallpdf – Best for Occasional Heavy Editing
Smallpdf gives you 2 free tasks per day. Each “task” is one operation: edit, merge, compress, convert, whatever. The catch is obvious – do your PDF work in batches if you’re on the free plan.
What Works on iPhone
The iOS app and the mobile website (smallpdf.com) both work. I prefer the website because it doesn’t eat storage space and the app is 180MB. On the website through Safari, you upload your PDF, make edits, download the result. Files up to 5GB are supported on free.
Editing Capabilities
Add text anywhere (you pick the font, size, color). Add images. Draw freehand. Whiteout existing content (place a white rectangle over text you want to hide – not true redaction but works for visual purposes). Add shapes. Insert checkmarks for form-filling.
The text you add is actual selectable text in the output PDF, not a flattened image. I verified this by downloading the edited PDF and opening it on desktop.
Limitations
You cannot edit existing text content – only add new text or cover up old text. The 2 tasks/day limit resets at midnight UTC, not your local time. Processing happens on their servers, so you need internet access.
Method 4: iLovePDF – Best for Merge, Split, and Compress
Where Smallpdf charges one “task” per operation, iLovePDF is slightly more generous with batch operations. Merging 5 PDFs counts as one task. Their compression is also better in my testing – I compressed a 24MB scanned document to 3.1MB versus Smallpdf’s 4.8MB on the same file.
Free Tier Specifics
The app allows 2-3 free operations per day (it varies – I’ve gotten 3 some days, 2 others). File size limit is 100MB per file on free. The web version at ilovepdf.com/mobile gives identical functionality without installing the 95MB app.
Best Features for iPhone
Merge multiple PDFs with drag-to-reorder. Split by page ranges (pages 1-3 as one file, 4-7 as another). Compress with three quality levels. Add page numbers. Rotate pages. Convert to/from Word, Excel, PowerPoint, JPG.
For anyone dealing with scanned documents, their OCR tool (also free within the daily limit) makes scanned PDFs searchable. The accuracy on English text was around 97% in my tests. See our guide to free PDF OCR software for more options.
Method 5: Adobe Acrobat Reader (Free Version)
Adobe’s free app is worth having installed even though it constantly nags you to upgrade. Here’s why: it handles complex PDFs better than anything else. Forms with JavaScript validation, PDFs with embedded multimedia, XFA forms from government agencies – these often break in other apps but render correctly in Adobe Reader.
What’s Actually Free
Viewing, commenting, highlighting, drawing, filling forms, adding signatures (up to 2 saved), sharing for collaboration. The collaboration feature is underrated – you can send a link and collect comments from others without them needing an Adobe account.
What’s Behind the Paywall ($12.99/month)
Text editing, organizing pages, combining files, exporting to Word/Excel/PowerPoint, compress, password protection. At $156/year this is absurdly expensive for individual use. Most people are better off using Smallpdf or iLovePDF for the occasional advanced task.
Method 6: Shortcuts App Automations (Power User Move)
This is the hidden gem that nobody talks about. Apple’s Shortcuts app has native PDF actions that work offline with no file size limits and no daily caps.
Available PDF Actions
- Make PDF from… (images, web pages, text, files)
- Merge PDFs – combine multiple files into one
- Split PDF – separate into individual pages
- Get page count
- Get PDF page – extract specific pages by number
- Overlay image on PDF (for watermarks)
Sample Shortcut: Merge PDFs
Create a new shortcut. Add “Select Files” (toggle Allow Multiple). Add “Make PDF from Files”. Add “Save File” (to your preferred location). Name it “Merge PDFs”. Done. Run it from the Share Sheet or your home screen. I use this multiple times per week and it processes 50-page documents in under 2 seconds.
Sample Shortcut: Extract Pages
Select File (single). Get PDF Page (specify range or individual numbers). Make PDF. Save File. This replaces the clunky print-to-PDF workaround for page removal.
The downside: no annotation, no text editing, no compression. Shortcuts handles structural operations only (merge, split, extract, create). Pair it with Markup for annotations.
Method 7: Web-Based Editors via Safari
If you don’t want to install anything and your daily limit on Smallpdf/iLovePDF is used up, these browser-based editors work on iPhone Safari:
Sejda (sejda.com)
3 tasks per hour, max 200 pages or 50MB. Their text editor is the best I’ve found in a browser – it detects existing fonts and lets you edit inline. On iPhone the interface is slightly cramped but functional. Tap-and-hold to position the cursor precisely.
PDFCandy (pdfcandy.com)
1 task per hour on free. Good for conversions. Their PDF-to-Word output preserves formatting better than most competitors. The interface is clean on mobile.
DocHub (dochub.com)
3 free documents, 5 signatures, 2000 document views. Best for collaborative form-filling where multiple people need to sign the same document. Works like DocuSign but free at small scale.
Which Method to Use When
Look, here’s my actual workflow after testing all of these:
Quick signature or annotation – Files + Markup. Takes 10 seconds, no app switch needed.
Fill out a form – PDF Expert free tier or Adobe Reader. Both handle form fields well. PDF Expert is faster to open.
Merge or split documents – Shortcuts if I’m doing it regularly, iLovePDF if it’s a one-off. The Shortcut runs offline and has no limits.
Compress a large PDF to email it – iLovePDF. Their compression ratio is the best I’ve measured.
Edit actual text in a PDF – Sejda in Safari or Smallpdf. Neither is perfect on mobile, but they get the job done for small corrections.
Heavy-duty work (10+ pages of edits) – Honestly, I switch to my laptop. Editing complex PDFs on a phone screen is technically possible but painfully slow. Our free PDF editors guide covers desktop options that handle heavy editing better.
Tips for Better PDF Editing on iPhone
Storage and File Management
Keep PDFs in iCloud Drive or Files’ “On My iPhone” location – not buried in an app’s proprietary storage. This way every app can access them through the file picker. I’ve seen people save PDFs inside PDF Expert’s internal storage and then can’t find them from Smallpdf.
Use Two Fingers to Zoom in Markup
When using Markup for precise annotations, pinch to zoom first, then draw. Your lines and text will be much cleaner than trying to work at full-page zoom. The pencil tool at 300% zoom produces surprisingly accurate handwriting.
Batch Your Free Tasks
If you use Smallpdf or iLovePDF, plan your edits. Compress all files in one session. Merge before splitting. Converting and then editing burns two daily tasks when you could do it in one step on desktop.
Check Output Quality
After any edit, open the saved PDF and verify. Some web editors downsample images during save. If you’re editing a high-quality document (like a portfolio or contract), zoom in on any images to confirm they weren’t compressed unexpectedly.
What About iPad?
Everything above works identically on iPad. The extra screen real estate makes editing more comfortable, especially in Sejda and Smallpdf’s web interface. If you have an Apple Pencil, Markup becomes significantly more precise for signatures and annotations – no more fat-finger problems.
One iPad-specific advantage: Split View. Open your PDF in Files on one side and a reference document on the other. Or keep Safari open to a web editor alongside Mail where the PDF came from. This multitasking isn’t available on iPhone.
Frequently Asked Questions
Can I edit a PDF directly on my iPhone without paying for an app?
Yes. Apple’s built-in Files app and Markup tool let you annotate, sign, and add text to PDFs at no cost. For more advanced editing like changing existing text or rearranging pages, free apps like PDF Expert (limited free tier), Smallpdf, and iLovePDF work without a subscription for basic tasks.
Does the iPhone Files app support PDF editing?
The Files app supports basic PDF operations: you can view, share, rename, and use Markup to draw, highlight, add text boxes, and insert signatures. It does not support editing existing text, merging PDFs, or compressing files. For those tasks you need a third-party app.
What is the best free PDF editor for iPhone in 2026?
For most people, the combination of Apple Files + Markup handles 80% of needs. If you need to edit actual text content, PDF Expert offers a generous free tier. For batch operations (merge, split, compress), Smallpdf and iLovePDF are the strongest free options with 2 free tasks per day.
How do I sign a PDF on iPhone?
Open the PDF in Files, tap the Markup icon (pen tip), tap the + button, select Signature. Draw your signature with your finger or Apple Pencil. Once saved, you can reuse it across any PDF. The signature is stored locally on your device and syncs via iCloud to your other Apple devices. For more detailed instructions, see our guide to signing PDFs for free.
Can I merge multiple PDFs on iPhone for free?
Apple’s native tools don’t support merging directly. Use iLovePDF (2 free merges/day), Smallpdf (2 free tasks/day), or the Shortcuts app with a custom automation. The Shortcuts method is unlimited and works offline, though it requires a one-time setup.