HelloPDF · Image to PDF
Shoot, pick or scan — get a clean PDF in seconds. Document scanning straightens skewed pages automatically, and the cleanup filter turns backgrounds pure white, so every page looks like it came off a scanner.
Features
Image to PDF
Pick several photos from your library and turn them into one neatly laid-out PDF, with reordering and page settings.
Document scanning
Take a photo or choose one from Photos: edges are detected automatically and perspective is corrected, so skewed pages come out straight.
Image cleanup
Removes shadows and colour casts, giving you a pure white background with crisp dark text — adjustable strength, print ready.
PDF to images
Export every page of an existing PDF back into images and save them to your photo library.
Conversion settings
Choose page size (A4, Letter and more), orientation, margins and image quality to fit archiving or printing needs.
Organised library
Every PDF you create and every image you export has its own list — preview, share, rename or delete in one place.
Batch scans into one file
Scans are saved as you go; tick several pages in the list and merge them into a single PDF — ideal for a whole document.
Membership
Subscribing unlocks all advanced features and removes the watermark from exported files. See “Subscription” in the app for details.
How to use
-
Turn photos into a PDF
Tap Image to PDF on the home screen → pick one or more photos → reorder and check the settings → generate.
The new file shows up under Converted PDF on the home screen, ready to preview, share or delete.
-
Scan a document (or straighten a skewed photo)
Tap Scan Images → use the camera button to take a photo, or the photos button to import an already skewed shot.
Edges are detected automatically; drag the four corners to fine-tune → tap → to continue.
The result is full colour by default. For printing or archiving, tap Enhance for black & white and drag the strength slider until it looks right.
Tap Scan next to keep shooting, or Done to save. Then tick several saved pages and tap Generate PDF to merge them.
-
Clean up an image background
Tap Image Cleanup → Select image → drag the strength slider → save the result to your photo library.
-
Convert a PDF back to images
Tap PDF to image → Select PDF file → Next, and each page is exported as an image.
-
Adjust the output
Tap Conversion settings to set page size, orientation, margins and image quality. The settings apply to files you create afterwards.
-
Manage your files
Converted PDF holds the PDFs you created; Converted PDF images lists pages you exported. Swipe or long-press an item to delete, rename or share it.
Tips
- Better scans: fill the frame with the document and use even light — a light sheet on a dark desk gives the most reliable edges.
- Skewed shots are fine: photos imported from your library go through the same perspective correction and come out straight.
- Strength slider: push it up when handwriting is faint; back off if strokes start breaking apart.
- Batch work: for multi-page material, scan continuously and merge once — much faster than converting pages one by one.