Need to add a note to a PDF before forwarding it? Drop a signature on a document during your commute? ModernPDF's editor runs in Safari on your iPhone — no app download, no files uploaded to any server.
Navigate to ModernPDF's Edit PDF tool.
Tap to upload from Files, iCloud Drive, or any connected storage.
Add text, signatures, or annotations. Save to Files or share directly.
The editor runs natively in Safari on iOS 15+. No app installation required.
Place text and images with tap-and-drag. Pinch to zoom for precision placement.
Your PDF is processed locally on your iPhone. Nothing is transmitted to a server.
PDF editing apps on iOS fall into two categories: expensive native apps (PDF Expert, GoodNotes) that require installation and storage, or free online tools that upload your file to a server for processing.
If you are editing a medical form on a hospital's Wi-Fi, a legal document at a client site, or financial records on a plane, uploading to a third-party server is a non-starter.
ModernPDF runs entirely in Safari. Your PDF stays on your iPhone throughout the editing process. Add text, drop a signature, highlight key sections, and share the result — all without your document ever leaving your device.
Need to sign and return a contract from your phone? Add your signature without installing an app.
Inspectors, agents, and consultants who need to annotate documents between site visits.
Add a note, highlight a section, or circle a key figure before sending a document to someone.
Editing sensitive documents on public Wi-Fi? ModernPDF processes locally — your file never touches a server.
The mobile editor supports the same core features as the desktop version, optimized for touch:
Add text: Tap to place a text box, then type using the iOS keyboard. Move and resize by dragging the handles.
Sign documents: Use the Fill & Sign tool to draw your signature with your finger. On iPad, Apple Pencil provides more precision.
Highlight & annotate: Tap and drag to highlight text. Add shapes and arrows to draw attention to specific areas.
Insert images: Upload a photo, logo, or stamp from your camera roll or Files.
Navigate pages: Swipe between pages to edit any page in the document.
Share results: After editing, download the file and share via AirDrop, Mail, Messages, or save to Files.
Pro tip: Add modernpdf.app to your Home Screen from Safari for quick one-tap access. It functions like a lightweight app without using any storage.