Converting a photograph or scanned document from JPG to PDF is a routine task for students, job applicants, and professionals submitting documents to online portals. The challenge is not the conversion itself — it is getting the output PDF to meet the specific file size requirements of the target portal. This guide covers both the conversion process and size control.
When Do You Need to Convert JPG to PDF?
- Visa and passport applications — supporting documents must often be submitted as PDF.
- Educational institution admissions — scanned mark sheets and certificates submitted as PDF.
- Court and legal filings — affidavits and supporting documents digitised to PDF.
- Bank account opening and KYC — ID and address proof photographs converted to PDF.
- Insurance and financial product applications — income proof and policy documents.
File Size Requirements by Use Case
| Use Case | Typical File Size Limit | Recommended Tool |
|---|---|---|
| ID photo for examination portal | 50 KB | JPG to PDF 50KB |
| Scanned certificate for admission | 150 KB | JPG to PDF 150KB |
| Passport / police clearance scan | 500 KB | JPG to PDF 500KB |
| General document submission | 1 MB | JPG to PDF 1MB |
| No specific limit | Any | JPG to PDF (All Sizes) |
How to Convert JPG to PDF on DailyGen
- Open the JPG to PDF Converter.
- Select your target file size from the options provided, or leave it on Auto.
- Upload your JPG, PNG, or WebP image by dragging and dropping or clicking to browse.
- Click Convert to PDF.
- Download the output PDF.
The conversion and any compression run entirely in your browser. No image or PDF data is sent to any server.
Supported Input Formats
The tool accepts JPG/JPEG, PNG, and WebP images. It does not currently support HEIC (iPhone photos) directly — convert HEIC to JPG first using your phone's sharing options or the Files app before uploading.
How File Size Control Works
When a target size is selected, the tool embeds the image in the PDF and, if the resulting PDF exceeds the target, iteratively re-encodes the image at lower quality until the target is met. The PDF page size is set to A4 by default with the image scaled to fit the page.
Frequently Asked Questions
Will the PDF output be A4 size?
Yes, by default. This is the standard expected by most portals and document submission systems.
Can I convert multiple images to a single PDF?
Yes. Upload multiple images and they will be placed on separate pages in a single PDF in the order you upload them.
My JPG is 5MB. Can it be converted to a PDF under 50KB?
Yes, though aggressive compression at this ratio will reduce image quality noticeably. The output will be identifiable (text will be readable, faces recognisable) but will not be print-quality. For examination photo submissions, this is generally acceptable.
Is a PDF created from a JPG searchable?
No. A PDF created by placing an image is not searchable — it is an image of text, not text itself. For searchable PDFs, you would need OCR (optical character recognition) software.