Frequently Asked Questions

PixelPDF is a free photo to PDF converter app for iPhone and iPad. It allows you to convert any image or photo on your device into a professional PDF document. The app works entirely offline, processes everything on your device for complete privacy, and supports batch conversion of up to 50 images at once. There are no ads, no watermarks, and no subscription fees.

Yes, PixelPDF is 100% free. There are no in-app purchases, no subscription plans, no ads, and no watermarks. Every feature in the app - including batch processing, all quality levels, all page sizes, and unlimited conversions - is available at no cost. We believe everyone should have access to a high-quality PDF converter without paying.

PixelPDF requires iOS 16.0 or later. It is compatible with all iPhones and iPads running iOS 16 or newer, including iPhone 8 and later models. The app is optimized for the latest iOS versions and takes advantage of modern device capabilities for the best performance.

PixelPDF supports all major image formats: JPG/JPEG, PNG, HEIC (Apple's native iPhone photo format), TIFF, WebP, BMP, and GIF. The app automatically detects the format of your images and handles conversion seamlessly. You can even mix different image formats in the same batch conversion.

PixelPDF offers four quality levels: Low (optimized for smallest file size, great for emailing), Medium (balanced quality and file size for everyday use), High (excellent quality with reasonable file size), and Original (lossless conversion that preserves 100% of the original image resolution and quality). You can choose the quality level before each conversion.

PixelPDF supports batch conversion of up to 50 images in a single operation. You can select multiple images from your photo library, arrange them in your preferred order using drag-and-drop, and convert them all into a single multi-page PDF document. There is no daily limit on the number of conversions you can perform.

PixelPDF supports multiple standard page sizes including A4 (210 x 297 mm, the international standard), US Letter (8.5 x 11 inches), and Legal (8.5 x 14 inches). You can also use custom dimensions to create PDFs of any size. The app automatically adjusts image placement to fit your chosen page size while maintaining proper aspect ratios.

Yes, PixelPDF fully supports HEIC (High Efficiency Image Container), which is the default photo format on iPhones since iOS 11. The app converts HEIC images to PDF seamlessly without any quality loss. You do not need to convert HEIC to JPG first - simply select your HEIC photos and PixelPDF handles the rest.

While PixelPDF is primarily a photo to PDF converter, you can use it to digitize documents by taking a photo of any document with your iPhone camera and then converting that photo to PDF. The app integrates directly with your device's camera, so you can capture and convert documents in a seamless workflow. For best results, ensure good lighting and hold the camera steady over the document.

After converting your images to PDF, PixelPDF presents iOS's native share sheet with multiple sharing options. You can send the PDF via email, AirDrop to nearby Apple devices, share through Messages, WhatsApp, Telegram, or any messaging app, upload to cloud services like iCloud Drive, Google Drive, Dropbox, or OneDrive, save to the Files app, or print directly from the app.

PixelPDF includes optional cloud sync capabilities through Firebase. If you create an account (via Apple Sign In or email), you can sync your conversion history across devices. However, cloud sync is entirely optional - the app works perfectly offline without an account, and all PDF conversion happens locally on your device regardless of whether you are signed in.

PixelPDF takes privacy seriously. All image processing and PDF conversion happens entirely on your device - your photos are never uploaded to any server. The app only accesses photos you explicitly select for conversion. PixelPDF does not track your photo library, does not analyze your images, and does not sell any data. The app works completely offline, requiring no internet connection for core functionality.

Yes, PixelPDF works fully offline. All photo to PDF conversion is performed on your device using Apple's native PDFKit framework. You do not need an internet connection to select photos, convert them to PDF, or save the resulting documents. The only features that require internet are optional account creation and cloud sync.

PixelPDF requires photo library access to let you select images for conversion. If you want to capture new photos within the app, it will request camera access. These permissions are only requested when needed and follow Apple's privacy guidelines. The app does not require internet access, location data, contacts, or any other sensitive permissions for its core functionality.

PixelPDF does not impose any file size limits on conversions. You can convert large, high-resolution images without restrictions. The output PDF size depends on the quality level you select and the number of images included. For reference, a batch of 50 high-resolution photos on the High quality setting typically produces a PDF around 50-100 MB, while the Low setting can reduce that to under 10 MB.

PixelPDF is extremely fast thanks to on-device processing. A single image converts to PDF in under 1 second. A batch of 50 images typically completes in under 2 seconds on modern iPhones (iPhone 12 and later). Since there is no uploading or downloading involved, conversion speed depends only on your device's processing power, not your internet connection.

If you experience issues with PixelPDF, try these troubleshooting steps:

1. Make sure you are running the latest version from the App Store.
2. Restart the app by closing it completely and reopening it.
3. Check that you have granted photo library access in Settings > PixelPDF > Photos.
4. If converting large batches, try reducing the number of images or using a lower quality setting.
5. Restart your iPhone if the issue persists.

If none of these steps help, contact us through our website.