JPG to PDF 400 KB
400 KB is 409,600 bytes, and it is the cap most identity document uploads settle on. It holds 5 phone photos of pages at the default setting, so both sides of a card fit with the small print readable. Build the PDF from the photos first, then compress it to the target.
The identity document case
Most 400 KB forms want the two sides of one card, or a passport page and a signature page. At the default setting the photos stay at 150 dpi, which keeps a document number, an expiry date and the fine print legible.
Legibility is what the reviewer checks, so open the result and zoom in on the smallest text before you upload it.
Photograph it properly first
Fill the frame with the card. Photograph it flat on a plain surface with even light and no flash, because a flash on a laminated card produces a bright patch over the text. Crop to the edges before you leave the phone.
Then the images to PDF tool puts the photos on pages with the original pixels, and the 400 KB compress target takes it down to the cap and checks the output.
Choosing the right cap
A 500 KB target gives each side more room if the form allows it. A 200 KB target still holds both sides of a card at the default setting.
400 KB also holds about 20 photos at the smallest setting, for a longer set of documents.
Questions people ask
- Is 400 KB enough for both sides of an ID card?
- Yes. 400 KB holds 5 phone photos of pages at the default setting, so the card numbers, dates and fine print stay readable.
- Should I use flash when photographing an ID document?
- No. A flash on a laminated card creates a bright patch that hides the text underneath it. Even indirect light with no flash gives a flatter image, which is both more readable and smaller to store.
- How do I keep my ID photo sharp after compression?
- Crop the photo to the card and stay at the default setting. The pictures stay at 150 dpi, which keeps the card number and the fine print readable.
- Can I put two photos on one PDF page?
- The images tool gives each photo its own page, which keeps each one at full page size and readable.
Do it now
The tool runs in this browser. Your file never leaves the machine, and the result is checked before you download it.
JPG to PDFWhere to go next
- JPG to PDF Turn photos or scans into one PDF, in page order.
- JPG to PDF 500 KB Turn photos into a PDF under 500 KB with the detail still there.
- JPG to PDF 200 KB Turn photos into a PDF that comes out under 200 KB.
- Combine images into one PDF Turn a folder of images into one PDF in the right order.