Free JPG to PDF Converter: Merge & Compress for Exams
Are you struggling to upload your documents for UPSC, SSC, NEET, JEE, or Banking exams? Most portals like Ojas, MahaDBT, and IBPS require you to upload a single PDF file containing your ID proof, marksheets, and certificates, often with a strict size limit (e.g., under 2MB or 500KB).
Standard scanner apps create huge files (10MB+) that get rejected instantly. Our Pro PDF Maker is built for Indian students. It lets you combine multiple JPG photos into one PDF and automatically shrinks the file size to fit the exam requirements.
How to Create a PDF Under 2MB on Mobile
- Select Images: Tap the "Upload" box and select your photos (Aadhar, Pan Card, Marksheets) from your gallery. You can select multiple at once.
- Arrange & Rotate: Use the rotate button 🔄 to fix any upside-down scans.
- Set Target Size: This is the magic part. Type 2 in the box if the form asks for "Under 2 MB". Type 0.5 for "Under 500 KB".
- Download PDF: Click the download button. We merge and compress everything instantly.
Why use this tool instead of CamScanner or Adobe?
- No Watermarks: We don't ruin your official documents with "Scanned by..." logos. Your PDF is clean and professional.
- 100% Safe & Private: Other apps upload your Aadhar card to their servers. We don't. All processing happens inside your phone browser. Your data never leaves your device.
- Auto-Orientation: We detect if a document is horizontal (landscape) or vertical (portrait) and adjust the PDF page automatically.
Document Size Rules for 2026 Exams
| Exam / Portal | Document Type | Max Size Limit |
|---|---|---|
| UPSC Civil Services | Scanned Certificates | Under 2 MB (PDF Only) |
| SSC CGL / CHSL | ID Proofs | Under 500 KB |
| NEET / JEE Main | Category Certificate | 50 KB – 300 KB |
| SBI / IBPS PO | Handwritten Declaration | 50 KB – 100 KB |
Frequently Asked Questions (FAQ)
Can I merge 10+ photos into one PDF?⬇️
Yes! There is no limit. You can upload 10, 20, or even 50 pages. The tool will combine all of them into a single PDF file in the order you selected them.
How do I reduce PDF size to 100KB?⬇️
Simply type 0.1 in the "Target Size" box (0.1 MB = 100 KB). The tool will automatically compress each image before creating the PDF to meet your size requirement.
Is this tool free?⬇️
Yes, it is 100% free forever. No sign-up, no credit card, and no hidden fees.
What's the difference between JPG to PDF and merging PDF files?⬇️
JPG to PDF (our tool) takes image files (photos, scanned documents) and converts them into a PDF document. Merging PDFs takes multiple existing PDF files and combines them. We specialize in the former—perfect for creating application documents from phone photos.
Can I password-protect the PDF?⬇️
Not currently. Most government portals don't require password-protected PDFs. If you need encryption, use Adobe Acrobat or Smallpdf after downloading your PDF from our tool.
Will the PDF work on all devices?⬇️
Yes! We create standard PDF 1.4 format files that open on any device—Windows, Mac, iPhone, Android, or Linux. They're also compatible with all PDF readers (Adobe, Chrome, Safari).
Understanding PDF Standards & Formats
PDF (Portable Document Format) was created by Adobe in 1993 to ensure documents look identical on any device. Here's what you need to know:
PDF/A vs. PDF vs. PDF/X
PDF/A (Archival)
Designed for long-term archiving. Embeds all fonts and prohibits features like encryption or JavaScript. Used by libraries, government archives, and legal systems. Most government exam portals accept standard PDF, not PDF/A.
PDF (Standard)
The most common format. Supports images, text, hyperlinks, and form fields. This is what our tool creates. Compatible with 99.9% of PDF readers and exam portals.
PDF/X (Printing)
Optimized for professional printing presses. Requires specific color profiles (CMYK) and bleed settings. Irrelevant for digital submissions.
How to Scan Documents Like a Pro
Creating high-quality PDFs starts with good source images. Here's how to scan or photograph documents properly:
Using Your Smartphone Camera
- Lighting: Place the document on a flat surface near a window (natural light is best). Avoid overhead lights that create shadows.
- Angle: Hold your phone directly above the document (perpendicular, not at an angle). Use a book or box to stabilize your hand.
- Focus: Tap the screen on the document to ensure the camera focuses on the text, not the background.
- No Flash: Phone flash creates glare and hot spots. Natural light produces better results.
- Crop Later: Capture the entire document plus some margin. You can crop excess later, but you can't add missing parts.
Using a Scanner
- Resolution: Set to 200-300 DPI. Higher DPI (600+) creates unnecessarily large files.
- Color Mode: Use "Grayscale" for black-and-white documents or "Color" for photos/certificates with seals.
- File Format: Save as JPG (not TIFF or BMP, which create huge files).
- Clean the Glass: Dust and fingerprints on the scanner bed show up as dark spots in the PDF.
PDF Compression: How It Works
When you set a target PDF size (e.g., 2 MB), our tool performs several optimizations:
Step-by-Step Compression Process:
- 1. Image Analysis: The tool calculates the total size of all uploaded images.
- 2. Target Distribution: It divides the target size equally among all images. For example, if you upload 5 images and want a 1 MB PDF, each image gets compressed to ~200 KB.
- 3. Quality Adjustment: JPEG compression quality is iteratively adjusted (starting at 90%, then 80%, 70%...) until each image fits its target.
- 4. PDF Generation: Images are embedded into a PDF container using the jsPDF library. The PDF wrapper adds minimal overhead (~2-5 KB).
- 5. Final Check: The tool verifies the final PDF size and displays it before download.
Best Practices for Government Applications
Label Your Files Correctly
Name your PDF logically: "RahulSharma_Certificates.pdf" not "Document1.pdf". Avoid special characters (@, #, $, &) which can cause upload errors.
Organize Pages Logically
Follow the portal's instructions. If they ask for "Photo, Signature, ID Proof," upload images in that exact order.
Test Before the Deadline
Create the PDF and upload it to the portal a few days early. If it's rejected, you'll have time to fix issues.
Keep Originals
Save the uncompressed images separately. If the portal rejects your PDF, you can recreate it without re-scanning.
Don't Include Unnecessary Pages
If the form asks for "10th & 12th marksheets," don't add your 11th marksheet. Extra pages increase file size and confuse reviewers.
Don't Use Portrait + Landscape Mix (Unless Required)
Mixing orientations creates a disjointed PDF. Rotate all images to the same orientation before uploading.
Privacy & Security
Your documents often contain highly sensitive information—Aadhar numbers, PAN cards, addresses, signatures. Here's how we protect your data:
🔒 Our Privacy Guarantees:
- • No Server Uploads: All image processing and PDF creation happens in your browser using JavaScript. Your files never touch our servers.
- • No Data Collection: We don't track what documents you upload, how many pages you merge, or any personal information.
- • No Analytics on Files: Unlike competitors, we don't analyze your PDFs for "AI training" or "service improvement."
- • Works Offline: Once the page loads, you can disconnect from the internet and the tool still works—proving no data transmission.
Technical Verification: Open your browser's Developer Tools (F12), go to the Network tab, and watch as you use the tool. You'll see zero upload requests—only local processing.
Troubleshooting Common Issues
Issue: PDF size is still over the limit after compression▼
Cause: You have too many high-resolution images or the target size is unrealistic.
Solution 1: Lower the target size. For example, if you need under 2 MB, set the target to 1.8 MB for safety margin.
Solution 2: Reduce the number of pages. If you're merging 20 marksheets, consider splitting into two separate PDFs.
Solution 3: Pre-compress images using our Image Compressor tool before creating the PDF.
Issue: Text in PDF is unreadable or blurry▼
Cause: The target size is too aggressive, forcing extreme compression.
Solution: Increase the target size. Government portals usually specify a maximum (e.g., "under 2 MB"), not an exact size. Aim for 1.5 MB instead of pushing to 0.5 MB.
Prevention: Take clearer photos. Ensure good lighting, focus, and avoid shadows when scanning/photographing documents.
Issue: Portal says "Invalid PDF" or "Corrupted File"▼
Solution 1: Make sure you downloaded the PDF completely. If your internet cut off mid-download, the file is incomplete.
Solution 2: Try a different browser. Some old government portals don't support modern PDF versions. Use Chrome or Firefox.
Solution 3: Open the PDF in Adobe Reader to verify it works before uploading. If it opens fine locally, the portal may have temporary issues.
Issue: Pages are in the wrong order▼
Cause: Images are arranged in the order you selected them from your device.
Solution: When selecting files, click them in the correct order. On Windows, hold Ctrl and click each file sequentially. On phones, select one at a time in order.
Alternative: Rename your images before uploading (e.g., "01-Photo.jpg", "02-Signature.jpg") so they auto-sort correctly.
Related Tools & Resources
Image Compressor
Need to reduce individual photo sizes to 50 KB or 20 KB before creating a PDF? Use our Image Compressor first.
Go to Image Compressor →PDF Editor (Coming Soon)
Need to add text, signatures, or annotations to your PDF? Our PDF editor will launch in Q2 2026.
Launching Soon
Need Help? We're Here!
If you're having trouble creating a PDF for a specific exam or portal, don't hesitate to reach out. We've helped thousands of students and professionals successfully submit their applications.
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