Need to combine multiple PDFs into one, or extract specific pages from a large PDF? Most online tools upload your files to their servers - a privacy risk for sensitive documents. Here is how to do it safely in your browser, with no uploads.
When You Need to Merge PDFs
- Job applications: Combine resume, cover letter, and certificates into one file
- Government forms: Merge ID proof, address proof, and photos into a single document
- Business: Combine invoices, contracts, and annexures for email
- Education: Merge assignment pages or research papers
When You Need to Split PDFs
- Extracting specific pages: Pull out page 3 and 7 from a 50-page report
- File size limits: Split a large PDF to meet upload size restrictions
- Sharing selectively: Share only relevant sections of a document
- Removing pages: Drop unwanted pages from a scanned document
Why Browser-Based PDF Tools Are Safer
Most popular PDF tools (iLovePDF, SmallPDF, etc.) upload your files to their servers for processing. This means:
- Your bank statements, ID cards, and contracts pass through third-party servers
- Files may be stored temporarily (or permanently) on their servers
- You have no control over who accesses them
Browser-based tools process everything locally using JavaScript. Your files never leave your device. This is crucial for documents containing Aadhaar numbers, bank details, salary slips, or medical records.
How to Create PDFs from Images
A common need is converting scanned images (photos of documents, receipts, etc.) into a single PDF:
- Open the Image to PDF tool on DesiUtils
- Add your images in the correct order
- Drag to rearrange if needed
- Choose page size (A4 is standard for documents)
- Download the combined PDF
Reducing PDF File Size
If your PDF is too large (common with scanned documents), try these approaches:
- Compress images before creating PDF: Reduce image quality to 70-80% before converting to PDF
- Use lower DPI: 150 DPI is sufficient for screen viewing. 300 DPI is needed only for printing.
- Remove unnecessary pages: Split out only the pages you need
- Convert color to grayscale: If color is not needed, grayscale is significantly smaller
Page Selection Tips
- Both our tools support page ranges like
1-5, 8, 12-15 - Pages are 1-indexed (the first page is page 1, not page 0)
- Spaces around commas and hyphens are ignored, so
1-5, 8and1-5,8work the same - When merging, the order of files determines the page order in the final PDF; drag the file cards to reorder
- When splitting, the order of pages in your range determines the output order:
5, 1-3outputs page 5 first, then 1, 2, 3
Common Use Cases in India
| Scenario | Action |
|---|---|
| Passport application | Merge Aadhaar + photo + address proof into one PDF |
| College admission | Merge marksheets + certificates + ID |
| ITR filing | Split Form 16 to extract specific pages |
| Loan application | Merge salary slips + bank statements + ID proof |
| Visa application | Merge passport pages + itinerary + hotel bookings |
The Privacy Problem with Online PDF Tools
Most popular PDF merge/split websites work by uploading your files to their servers, processing them remotely, and sending back the result. This means your sensitive documents - Aadhaar cards, PAN, salary slips, bank statements - are temporarily (or permanently) stored on a server you do not control.
Many of these services are hosted outside India, which means your documents may be processed in a data centre in the US or Europe with no obligation to follow Indian data protection norms. Even services that claim "files deleted after 1 hour" have no way for you to verify this.
Browser-based tools that process files entirely on your device (client-side) avoid this risk completely. The file never leaves your computer - all the merging and splitting happens in your browser using JavaScript. You can verify this by disconnecting from the internet and checking that the tool still works.
Dealing with File Size Limits
Government portals and job application forms often have strict PDF size limits (typically 200KB - 2MB per file). If your merged PDF is too large:
- Compress images first: Before creating the PDF, compress each image to 70-80% quality - this alone can reduce final size by 50-70%
- Use grayscale: If color is not required (e.g., Aadhaar photocopy), converting to grayscale cuts size significantly
- Reduce resolution: 150 DPI is sufficient for screen viewing and most government uploads - no need for 300 DPI print quality
- Split and upload separately: If the portal allows multiple uploads, split into smaller files rather than compressing aggressively