Tools
Word / Character CounterCase ConverterLorem Ipsum GeneratorJSON FormatterRegex TesterCron Expression ParserString Escape / UnescapeSQL Formatter
Merge PDFSplit PDFPDF to ImageImage to PDFCompress PDFUnlock PDF
Image EditorImage ConverterImage ResizerImage CropperOCR Text ExtractorImage Compressor
Hash GeneratorQR Code GeneratorPassword GeneratorColor Palette GeneratorRandom Number GeneratorUUID Generator
Base64 Encoder/DecoderURL Encoder/DecoderHTML Encoder/DecoderUnicode Encoder/DecoderASCII Encoder/Decoder
JSON ViewerCSV ViewerMarkdown ViewerJWT ViewerDiff Viewer
JSON → YAMLJSON → XMLJSON → TypeScriptJSON → CSVYAML → JSONCSV → JSONXML → JSONMarkdown → HTMLTOML → JSONUnix Timestamp ConverterJSON → TOMLUnit ConverterData Size ConverterHEX ↔ RGB Converter
Finance
Severance Pay Calculator
Daily
Tip CalculatorAge CalculatorElectricity Cost CalculatorDate CalculatorD-Day Calculator100-Day Anniversary CalculatorRelationship Days CalculatorTime CalculatorPercentage CalculatorRatio CalculatorAverage CalculatorDiscount Calculator
Health
Sleep CalculatorBMI CalculatorBMR CalculatorDaily Calorie CalculatorBody Fat CalculatorWater Intake Calculator
Study
GPA CalculatorExam Average Calculator
Utility
Area CalculatorVolume CalculatorSpeed CalculatorAspect Ratio Calculator

Merge PDF

Combine multiple PDF files into one. Processed directly in your browser — no files are uploaded to any server.

📎

Drag & drop PDF files or click to upload

You can add multiple files at once

About Merge PDF

Merge PDF combines multiple PDF files into a single document. • Reorder files using drag or buttons before merging. • All pages, bookmarks, and links are preserved. • Uses pdf-lib library to process directly in your browser. • No files are uploaded to any server — your data stays private.

Usage Examples

• Combine multiple scanned documents into one PDF • Merge report chapters into a single document • Organize receipts, contracts, etc. into one file • Combine multiple presentations into one

FAQ

Is there a file size limit?
Since no server is used, there is no strict size limit. However, very large files may take longer to process depending on browser memory. Generally works well for files under 100MB.
Can I change page order after merging?
You can change file order before merging. Use the up/down buttons in the file list to arrange files in your desired order.
Can I merge password-protected PDFs?
Password-protected PDFs cannot be merged directly. Please remove the password first, then try merging.

Related Tools

Split PDF

Extract specific pages or split a PDF into multiple files. Processed directly in your browser.

Compress PDF

Reduce PDF file size by optimizing image quality. Processed locally in your browser.

Image to PDF

Convert multiple images into a single PDF file. Reorder pages and set page size.

PDF to Image

Convert PDF pages to PNG or JPG images. Processed directly in your browser.

Unlock PDF

Remove password protection from PDF files. Processed directly in your browser — no files are uploaded.