Government job portals, university admissions, and visa applications often ask for a single PDF containing multiple documents — degree certificate, experience letter, ID proof, and signature page all in one file. If you have separate PDFs scattered across your phone or laptop, you need to merge them before uploading.

Most "free PDF merge" sites upload your documents to their servers, show ads, and sometimes add watermarks unless you pay. ToolShoppy's PDF Merge tool works differently: everything happens in your browser using pdf-lib, so your confidential documents never leave your device.

When you need to merge PDFs

  • PSC and UPSC applications — combine photo, signature, and certificate scans into one upload slot
  • Job applications — resume + cover letter + certificates as a single attachment
  • Bank KYC updates — merge Aadhaar, PAN, and address proof scans
  • Student admissions — mark sheets, transfer certificate, and caste certificate in order
  • Freelance invoices — attach timesheets and receipts to a main invoice PDF

Step-by-step: merge PDFs in your browser

  1. Open the PDF Merge tool. Visit /tools/pdf/merge/ on any modern browser — Chrome, Edge, Firefox, or Safari on mobile works fine.
  2. Add your PDF files. Click the drop zone or drag files from your folder. You can add multiple PDFs at once.
  3. Arrange the order. Drag tiles to reorder pages. Put your cover page first, certificates in logical sequence, and signature last if the portal specifies an order.
  4. Click Merge. The tool combines all pages into one PDF entirely in your browser memory.
  5. Download the merged file. Save it with a clear name like Application_John_Doe_2026.pdf and upload to the portal.

Tips for Indian application portals

Many Indian government sites enforce a maximum upload size — commonly 1MB, 2MB, or 5MB for the combined PDF. If your merged file is too large:

  • Scan documents at 150 DPI instead of 300 DPI — text remains readable
  • Use the ToolShoppy PDF Compressor after merging
  • Remove blank pages before merging
  • Convert colour scans to grayscale if the portal allows it

Privacy matters for sensitive documents

Your degree certificates, salary slips, and ID scans contain personal data protected under India's DPDP Act. Uploading them to unknown PDF websites creates unnecessary risk. ToolShoppy's client-side approach means zero server contact — the merge runs on your CPU, and closing the tab clears the data from memory.

Merge vs other PDF tasks

Merging combines existing PDFs page-by-page. If you need to split a large PDF, remove pages, or add a password, use ToolShoppy's PDF Splitter or Password Protect tools instead. For converting Word documents first, try the Word to PDF converter before merging.

Merging PDFs should take under a minute. Keep the tool bookmarked for your next application deadline.