Most online forms want documents such as Aadhaar, marksheets, caste certificates or bank passbooks as a PDF, not a photo. You can make that PDF in your phone's browser in about a minute, without installing an app.
The quick method
- Open JPG to PDF in Chrome (Android) or Safari (iPhone).
- Tap to add images and pick your photos from the gallery. JPG, PNG and WebP all work.
- Use the arrows to put pages in the right order, for example Aadhaar front first, then back.
- Choose a page size. A4 is the safe choice for most government forms.
- Tap Create PDF and download. The PDF is saved in Downloads (or the Files app on iPhone).
Take a good photo first
- Place the document on a dark, plain surface so the edges are clear.
- Use daylight and avoid flash glare, especially on laminated cards.
- Hold the phone straight above the document.
- Crop away the table and background with the Image Cropper before converting. A tight crop makes a sharper and smaller PDF.
iPhone photos in HEIC format
iPhones often save photos as HEIC. If a photo won't add, convert it first with HEIC to JPG, then make the PDF.
Aadhaar front and back on one page or two?
Forms usually just want both sides in one PDF. Two pages (front, then back) is the simplest. If a form asks for both sides on one page, follow its instructions.
PDF too big for the form?
Many forms cap uploads at 100 KB to 2 MB. If yours is too big, run it through the PDF Compressor, or see our guide on reducing a PDF to 100 KB or 200 KB. Exam forms often state a range too: for example, NTA's 2026 NEET and JEE bulletins asked for the Class 10 certificate as a PDF between 50 KB and 300 KB.
Combine or fix existing PDFs
- Join several PDFs (marksheets for each year) with the PDF Merger.
- Rotate a sideways page or delete a blank one with the PDF Page Organizer.
Is it safe for Aadhaar?
The PDF is made inside your browser, so your Aadhaar or marksheet is not uploaded to our server. Still, share Aadhaar copies only where they are really needed.
Each portal sets its own format and size rules. Always check the official instructions for the form you are filling.
Frequently asked questions
How do I convert a photo to PDF on my phone without an app?
Open ToolSandook's JPG to PDF in Chrome or Safari, add your photos, set the order and page size, then tap Create PDF and download.
How do I put Aadhaar front and back in one PDF?
Add both photos in JPG to PDF, put the front first and the back second, and create the PDF. You get one file with two pages.
Why won't my iPhone photo convert?
It is probably in HEIC format. Convert it with HEIC to JPG first, then add it to JPG to PDF.
How do I make the PDF smaller?
Crop the photos tightly before converting, then use the PDF Compressor in Strong mode if the form still says the file is too big.