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PixelKit PixelKit
Multi-File Drag & Drop · Page Reordering · 100% In-Browser

Merge JPG to PDF Online Free

Combine multiple JPG, PNG, or iPhone HEIC photos into a single professional PDF document. Reorder pages, adjust margins, and compress under 100KB, 200KB, or 500KB with complete client-side privacy.

All-in-One Convert Compress Crop Resize Portal Presets
Drop any photo or document to convert or browse files

Supports JPG, PNG, HEIC, WEBP, PDF, SVG, TIFF, AVIF, GIF, BMP · Preset for JPG → PDF

No file size limit Add unlimited photos 100% in-browser

No files selected yet. Drag & drop photos, documents or click browse above.

Common Use Cases for Merging JPGs into a PDF

Why users merge multiple photos into a unified document on PixelKit:

Identity & Address Proofs

Aadhaar, Passport & Voter ID

Combine front and back sides of identity cards into a single clean PDF for bank KYC, SIM registration, and portal verification.

Academic Marksheets & Certificates

10th, 12th & Degree Transcripts

Merge multi-semester marksheets into a single chronological PDF document under 200KB or 500KB for university admission forms.

Expense Receipts & Invoices

Business Travel & Tax Filings

Bundle restaurant receipts, flight boarding passes, and vendor invoices into an organized monthly expense report for accounting.

Related Tools: JPG to PDF Hub → Compress JPG to PDF (under 100KB) Compress Image to PDF HEIC to PDF PNG to PDF

How In-Browser PDF Merging Works Without Server Uploads

Most online PDF converters upload your photos to remote servers, process them in cloud queues, and generate temporary download links. This exposes sensitive personal documents (Aadhaar cards, bank statements, passports, and medical records) to potential data breaches and unauthorized cloud retention.

The PixelKit In-Browser Engine: PixelKit utilizes a high-performance client-side document compiler written in TypeScript and WebAssembly:

  • Local Raster Decoding: Every input image is decoded directly into ephemeral browser memory buffers.
  • Standardized PDF Geometry: The engine calculates standard ISO A4 (595.28 × 841.89 pt) or US Letter page geometries and scales your photos with proportional aspect ratios so documents never stretch or distort.
  • DCT Stream Embedding: Images are packaged directly into compliant PDF /XObject dictionary streams using raw discrete cosine transform tables, eliminating generational re-compression degradation while maintaining minimal file size.

Frequently asked questions

How do I merge multiple JPG images into a single PDF document?
Drop all your JPG, PNG, or iPhone HEIC photos into the tool above. You can drag and drop pages to reorder them in the exact sequence you want (e.g. Page 1, Page 2, Page 3). Choose your margins and orientation, then click "Download PDF" to immediately generate a unified, compact PDF file directly in your browser.
Can I reorder or delete pages before merging?
Yes. PixelKit provides an interactive thumbnail preview queue where you can drag cards to rearrange page order, rotate individual pages, or delete unwanted snaps before creating the final PDF.
Can I set an exact file size limit (e.g. under 100KB or 200KB) for the merged PDF?
Yes. When merging receipts, marksheet scans, or Aadhaar identity cards for government exam portals, select a target ceiling like "Under 100KB" or "Under 200KB". PixelKit automatically downsamples and compresses the embedded images so the final merged PDF strictly complies with portal upload gates.
Are my confidential documents and scanned certificates uploaded to a server?
Never. PixelKit is 100% client-side. The PDF merging engine runs in your device’s local browser memory using JavaScript and WebAssembly. Your tax records, marksheets, and confidential documents never leave your computer or phone.
Does merging JPG to PDF work on iPhone and Android mobile phones?
Yes. PixelKit works seamlessly in mobile Safari, Chrome, and Firefox. You can pick multiple photos directly from your phone gallery or take successive camera snaps to merge into a single PDF without installing any apps.