Image to PDF is an iPhone toolkit for the PDF chores that come up in daily life. It turns photos into PDFs, stitches multiple photos into one image, splits a PDF back into images, merges PDFs, and adds or removes encryption. All files stay on your phone.
Photos to PDF
Pick multiple photos from your library or the Files app. JPG, PNG, HEIC, WebP, GIF and similar formats are accepted. Drag to set the order, then export a PDF at each image's original size. The PDF keeps the source resolution, so a phone-camera-quality PDF stays that way.
Stitch photos into one image
Stitch photos vertically for long chat screenshots, horizontally for side-by-side comparisons, or in a 3×3 grid for a gallery. Original aspect ratios are preserved, the preview updates live, and you can drag to reorder before exporting.
PDF to images
Open any PDF, preview every page, pick the ones you need, and export them as PNG images. Five zoom levels from 1.0× to 3.0× are available so you can match the resolution to where the image will be used.
Merge multiple PDFs
Combine several PDFs into a single file. Each file gets a thumbnail preview so you can confirm the order before merging, and you can drag to rearrange them.
Encrypt with AES-256
Set a user password and an optional owner password. Control whether the recipient can print, copy text, or modify the document. AES-256 is the default cipher; weaker options exist if you need to open the PDF in older readers.
Decrypt a PDF
Open an encrypted PDF, enter the password, and the file is saved back without encryption. The app detects whether a file is encrypted before asking for a password, so plain PDFs go straight through.
Sharing and history
Export a PDF through the system share sheet to email, AirDrop, or the Files app. Every conversion is saved to an on-device history automatically, and reopening it brings back the same output.
Everything on your device
Image conversion, stitching, PDF merging, encryption, and decryption all run locally. Files never leave your phone, and the conversion history is stored only in a local database.
Free and Pro
All tools are free to use. Free users see a short rewarded ad before each conversion. Pro subscribers convert without ads. Pro is sold as an auto-renewing subscription through the App Store.