PDF · Blog
How to Make a Scanned Document Look Professional
Updated 27 September 2026 · 5 min read
A good scan is invisible: the reader sees the document, not the photo of it. A bad one — grey and shadowy, tilted, with a thumb in the corner — makes a strong application look careless and can even get a document rejected as unreadable. You don’t need a scanner to get it right. Almost all of the difference comes from how you take the photo, and the rest from a few minutes of tidying.
Open the free JPG to PDFWhat “professional” looks like
- Readable at normal zoom — including small print, stamps and signatures.
- Square to the frame — no keystone shape where the top of the page is narrower than the bottom.
- Complete — all four edges visible, nothing cropped off.
- Clean — no shadows, glare, fingers or table showing around the page.
- Sensible size — a few hundred kilobytes per page, not 8 MB.
Get the photo right (it’s 90% of the result)
Light
Diffuse daylight is best: near a window, but out of direct sun. Overhead room lights sit behind you and throw your shadow across the page. Turn off the flash — on glossy paper it creates a white hotspot that wipes out text.
Angle
Hold the phone directly above the page, with the screen parallel to the paper. Even a small tilt produces a trapezoid page that no amount of cropping will square up. Many phones show a level indicator in the camera grid settings; switch it on.
Background
Put white paper on a dark, plain surface. The contrast makes edges obvious for you when cropping, and for your phone if it has a built-in document scanner.
Flatness
Unfold creases and weigh down curled corners with something outside the frame. For a bound booklet, press the spine flat — curved text near the binding is the hardest thing to read later.
Tidy up the image
- Crop away the table and background with the Image Cropper, leaving a thin, even margin around the page.
- Rotate sideways shots with the Image Rotator (in 90° steps). A page that’s slightly tilted can’t be straightened this way — retake it or use your phone’s document scanner.
- Convert iPhone photos if a program won’t open them; KitWren’s tools open HEIC directly, or use HEIC to JPG.
Avoid heavy filters. Black-and-white “document” filters can make stamps and signatures disappear and can make a document look altered — a real concern for official paperwork.
Turn the photos into one PDF
Add all the pages to JPG to PDF, put them in order with the arrows, choose A4 (or US Letter) with a small margin and Automatic orientation, and create the PDF. Every page now has the same size and a neat border, which is most of what makes a multi-page scan look like it came from an office scanner.
Get the size right
Phone photos are large. If the PDF is too big to upload, compress it with Compress PDF using the Scanned document setting, then zoom in to check that the smallest text is still crisp. As a guide, a one-page document should end up well under 1 MB.
Optional: make it searchable
A PDF made from photos contains pictures of text, not text, so it can’t be searched or copied from. Run it through PDF OCR to get a searchable PDF: it looks exactly the same, but the recognised text sits invisibly behind each page, so the reader can search, select and copy.
Worked example: an employment letter for a rental application
Tom photographs his employment letter on the kitchen bench at night. The result: yellow light from the ceiling lamp, his phone’s shadow across the signature, the page slightly tilted, 4.8 MB.
| Change | Why it helped |
|---|---|
| Retook it next morning by the window, on a dark tea towel | Even white page, no shadow, clear edges |
| Used the Notes app’s document scanner | Page came out square, with perspective corrected |
| Converted with JPG to PDF: A4, small margin | Looks like a standard A4 document |
| Compressed with the Scanned document setting | 4.8 MB → 380 KB, signature still sharp |
| Named it “Tom-Nguyen-Employment-Letter.pdf” | Easy for the agent to find |
Ten minutes, and the agent sees a clean, official-looking letter instead of a dim photo.
Special cases
Receipts
Thermal-paper receipts fade and are often curled. Photograph them soon after purchase, flatten them under a book for a minute first, and place them on a dark surface so the pale paper stands out. Several small receipts can go on one page — photograph them together, or combine the photos with JPG to PDF.
ID cards
Cards are small and shiny. Avoid overhead light that reflects off the laminate, and photograph front and back separately. For a single-page PDF with both sides, add both photos to JPG to PDF with a large margin, or place them on one A4 page if your phone’s scanner app supports it.
Documents with photos
Birth certificates with seals, passports and anything with a hologram need a slight change of angle to avoid glare — tilt the document, not the phone, so the camera still looks straight down.
Double-sided pages
Scan both sides, in order, even if the back looks mostly empty — stamps and endorsements are often on the reverse. Remove genuinely blank backs afterwards with Delete PDF pages.
Whatever the document, check the finished page on a phone screen as well as a computer. If you can read it comfortably on a phone, it will be fine on a reviewer’s monitor.
Scanner app or plain camera?
Built-in document scanners (Notes on iPhone, Google Drive on Android) are excellent for text: they find the page edges, correct perspective and even out lighting. For documents with photos, colour seals or handwriting in pencil, the plain camera sometimes gives a more natural result, because scanner apps can over-sharpen and wash out colour. If one looks wrong, try the other.
Checklist before you send
- All edges, stamps and signatures visible.
- Pages upright and in order.
- Text readable at 100% zoom.
- One PDF (unless the recipient asked for separate files).
- Within the upload size limit.
- Clear file name.
Privacy
Scans often contain ID numbers, signatures and addresses. KitWren converts and compresses them in your browser, so the images aren’t uploaded. If you only need to share part of a document, extract the relevant pages or redact what isn’t needed.