Why portals ask for a PDF instead of a JPG
If you have filled in an online government form recently, you have probably hit this pattern: the photograph and signature fields want a JPG, but the supporting documents — ID proof, address proof, certificates, mark sheets — want a PDF.
That split is deliberate:
- A PDF is a fixed document. Page size and layout stay put, so a clerk reviewing your Aadhaar sees it the same way on every screen and printer.
- One document, one file. A certificate that runs to two pages stays a single PDF attachment instead of two loose images that can get separated.
- Cleaner printing and archiving. Portals that print applications for physical files get predictable output from a PDF.
- Consistent viewing. Portal reviewers open PDFs in a standard viewer rather than relying on an image preview that may rotate or rescale a photo.
So when a form says "Upload PDF only, max 500 KB" for your ID proof, a phone photo of your Aadhaar card will be rejected until you convert it.
Check the field label first. Specifications differ between portals and between exam cycles, and the photo and signature fields in particular are often JPG-only. Converting those to PDF will get them rejected.
Why this matters more for ID documents
An Aadhaar or PAN card is not an ordinary file. It carries your name, date of birth, photograph, and a number that is tied to your bank accounts and tax records.
Most free "JPG to PDF" websites work by uploading your file to their server, converting it there, and sending a PDF back. That means a copy of your Aadhaar card sits on a machine you do not control, under a retention policy you did not read.
File Genie's Image to PDF tool works differently. The conversion runs in your browser using your own device's processing power. Your image is never transmitted to File Genie or anyone else — there is no upload step, so there is no server-side copy to worry about.
Step by step: Aadhaar or PAN photo to PDF
1. Get a clean photo of the card. Lay the card flat in good, even light. Fill the frame with the card and keep the edges straight. Avoid flash glare across the hologram or the photo. If your phone has a document-scan mode, use it — the cropped, deskewed result converts better.
2. Open the Image to PDF tool. Go to File Genie's Image to PDF tool. Nothing loads from a server beyond the page itself, and no account or email is required.
3. Add your image. Drag the photo onto the drop area, or click to pick it from your device. The tool accepts standard image formats such as JPG and PNG. It takes one image at a time, which suits ID uploads well — most portals want each document as its own separate file anyway.
4. Convert. Click Convert Image to PDF. Because the work happens locally, it finishes almost immediately and your network connection is not carrying your ID anywhere.
5. Check the preview. The tool shows the resulting PDF on the page. Confirm the whole card is visible, right side up, and readable — including the Aadhaar or PAN number. This is the step most people skip, and it is the one that prevents a rejected application.
6. Download.
Click Download PDF and save it with a name the portal reviewer will understand, like aadhaar-front.pdf or pan-card.pdf.
If you need the front and back
File Genie converts one image into one PDF, and it does not merge PDFs together. For a two-sided card you have two straightforward options:
- Upload them separately, if the portal provides two fields (many do — "ID proof front" and "ID proof back").
- Combine the two photos into one image first — put the front and back side by side or stacked in any photo editor or your phone's collage tool — then convert that single combined image to one PDF.
Meeting the size limit
Portals usually cap the attachment size. If your PDF lands over the limit, the cause is almost always the source photo: a modern phone camera produces a 4–8 MB image, and that weight carries into the PDF.
Shrink the image before converting. Use File Genie's Convert Image tool to lower the compression quality and reduce the pixel dimensions, then run the smaller image through Image to PDF. A card photo around 1200 px on its long edge is usually plenty for a legible scan while keeping the PDF small.
For a fuller walkthrough of hitting a specific size target, see our guide to government portal file size limits.
A note on choosing a converter
Plenty of well-known converters — Smallpdf, iLovePDF and others — do this job competently, and they offer far more PDF features than File Genie does. The trade-off is that they process your file on their servers, and their free tiers apply usage limits.
For a document as sensitive as an Aadhaar or PAN card, "it never leaves my device" is worth more than a long feature list. If you are weighing the options, we lay out the differences plainly in our Smallpdf alternative comparison.
Convert your ID to PDF now
No upload, no sign-up, no watermark — and your ID stays on your device from start to finish.