How to convert multiple certificates or marksheets into a single PDF?

Select or drag all your certificate images into the upload box. Adjust page orientation (Portrait or Landscape) and margin size, preview the pages, and click 'Convert & Download PDF' to merge them into a single file.

Is there any file upload limit or page count limit?

No. Because all PDF generation takes place locally inside your browser memory using jsPDF, you can convert unlimited pages without file limits or watermarks.

Are my identity documents (Aadhaar, Marksheets) uploaded to any server?

No. RajStudy processes all images 100% locally on your computer or phone. Your confidential documents, signatures, and personal records are never transmitted over the internet.

Does this tool compress images to keep PDF size small for portal uploads?

Yes. Our conversion engine uses optimized JPEG compression internally to ensure the resulting PDF file remains compact and lightweight, making it suitable for portal limits like 200 KB or 500 KB.

Image to PDF Converter Online Free - Convert JPG, PNG to PDF Document

Why Government Exam Portals Require Supporting Documents in PDF Format

Almost every competitive examination portal across India—including Staff Selection Commission (SSC), Union Public Service Commission (UPSC), Railway Recruitment Boards (RRB), State PSCs (UPPSC, BPSC, RPSC, MPPSC), and Central Entrance Portals (NTA NEET, JEE, CUET)—strictly mandates that educational marksheets, caste category certificates (OBC/EWS/SC/ST), disability proofs (PwD), and experience documents must be submitted as a single multi-page PDF document.

Examination / Portal	Required PDF Documents	File Size Ceiling	Standard Format
SSC CGL / CHSL / MTS	Educational Qualifications, Category Certificates, PwD Proofs	Max 500 KB per document	Clear A4 Multi-Page PDF
UPSC Civil Services / OTR	Class 10 Matriculation Certificate (for Age Proof), Degree Certificate	20 KB to 300 KB	Standard Grayscale or Color PDF
Railway RRB (NTPC, ALP, JE)	SC/ST Free Travel Pass Certificate, OBC-NCL Annexure, ITI/Diploma Certificate	100 KB to 500 KB	A4 Portrait PDF
State Public Service Commissions	Domicile / Residential Certificate, Marksheets, No Objection Certificate (NOC)	200 KB to 500 KB	High Contrast Scanned PDF

Key Advantages of RajStudy's In-Browser Image to PDF Converter

100% Client-Side Privacy: Standard online converters transfer your sensitive documents (Aadhaar cards, birth certificates, college marksheets) to external cloud servers, which presents severe data privacy risks. RajStudy converts photos entirely inside your device's memory using JavaScript and HTML5 Canvas. Your documents never touch any server.
Multi-Image Merge & Reordering: Combine unlimited JPG, PNG, and WebP images in seconds. Individual page removal buttons make it easy to curate multi-page document bundles.
Standard A4 Paper Dimensions: Automatically scales both horizontal and vertical certificates to fit cleanly into international standard A4 paper dimensions (210 mm × 297 mm) with customizable margins.
Zero Watermarks & Completely Free: Output PDFs are crisp, clean, and completely free of third-party promotional watermarks, making them immediately acceptable on official verification portals.

Recommended Scanner DPI & Resolution for Government Documents

Selecting the correct DPI (Dots Per Inch) when scanning your certificates or taking camera snapshots is critical for keeping your PDF under portal upload limits (typically 200 KB to 500 KB):

Scanning Mode / DPI	Typical Page File Size	Recommended Use Case	Portal Suitability
100 – 150 DPI (Color / Grayscale)	80 KB – 180 KB per page	Class 10/12 Marksheets, Caste Certificates, Domicile Certificates	Best for UPSC, SSC, RRB (Strict < 300 KB / 500 KB limits)
200 DPI (Grayscale)	150 KB – 350 KB per page	University Degree Diplomas, Multi-Page Transcripts	Ideal for State PSCs, Bank PO/Clerk document upload
300 DPI (High Resolution)	600 KB – 2 MB per page	Court affidavits, legal deeds, archival records	Exceeds most exam portals; requires compression before upload

How to Combine Both Sides of Aadhaar Card or Voter ID into a Single PDF

Take a clear, straight photo of the Front Side and Back Side of your identity card on a white background.
Select both images together in the upload zone above.
Set Page Orientation to Portrait and Margins to Small Margin.
Verify that Page 1 is the front side and Page 2 is the back side using our live thumbnail preview.
Click Convert & Download PDF to generate your unified 2-page document ready for Sarkari verification.

Troubleshooting Common Document Upload Rejection Errors

"File size exceeds 500 KB": If your compiled PDF is slightly above the portal's ceiling, ensure you remove unwanted photo backgrounds or crop the image borders before adding them to the converter. Our built-in compression automatically optimizes image quality to keep PDFs lightweight.
"PDF is password protected or corrupted": Some third-party scanning apps add encryption or metadata locks. RajStudy generates clean, unencrypted standard PDF documents (v1.4 compliant) guaranteed to pass automated portal validation checks.
"Text is blurry or illegible": Avoid capturing images in low indoor lighting or using heavy phone flash that creates glare on laminated certificates. Use natural daylight whenever possible.

Step-by-Step Instructions: How to Convert Photos to PDF

Upload Your Images: Drag your photo files into the upload box above, or click the box to browse your phone gallery or desktop folders.
Choose Page Orientation: Select Portrait for standard vertical marksheets and certificates, or Landscape for horizontal diplomas and wide identity cards.
Select Margin Style: Use Small Margin (10mm) for a neat, official print border, or No Margin to expand full-bleed scanned sheets.
Download Consolidated Document: Click Convert & Download PDF. The file is compiled in milliseconds and downloaded directly to your device as a standard PDF.