Mezclador de PDF

Une PDFs en Un Solo Archivo

Combina múltiples documentos PDF en uno solo. Sube hasta 20 PDFs y ordénalos como prefieras antes de fusionar.

Hasta 20 archivos Orden personalizable Marcadores preservados

Upload order = merge order. Drag tiles to rearrange before merging.

Drop multiple files here

or browse files

Add at least 2 files • They will be combined in order

Seguro y Privado

Archivos borrados en 2h

Procesamiento Rápido

Sin registro

Ultra Rápido

Cómo Convertir

Convierte cualquier archivo en segundos — sin software, sin registro.

Upload Your PDFs

Select two or more PDF files. The upload order sets the initial merge order — you can drag to rearrange them.

Arrange the Order

Drag each PDF tile to the correct position. The numbered order shown is the order pages will appear in the merged PDF.

Download Merged PDF

Click Merge and download your combined PDF. All pages, bookmarks, and internal links are preserved.

Por qué EasyConv

Por qué Usar EasyConv

Conversión de calidad profesional con funciones diseñadas para flujos de trabajo reales.

Up to 20 Files

Merge up to 20 PDF files in a single operation. Combine invoices, reports, chapters, or scanned pages with ease.

Drag-to-Reorder

Rearrange files in any order before merging. The visual order in the uploader matches the final document order.

Bookmarks Preserved

Bookmarks (outlines) from each source PDF are preserved and merged into the combined document's outline.

Internal Links Intact

Internal hyperlinks within each original PDF are offset to the correct page in the merged document.

Secure Document Handling

All uploaded PDFs are processed in an isolated session and deleted within 2 hours — never stored or shared.

Fast Merging via pdftk

300+ Formatos

Formatos Soportados

Descripción detallada de cada formato soportado por este conversor.

Formato	Descripción	Extensión	Caso de Uso
PDF INPUT	Standard PDF files as merge source	`.pdf`	Any PDF file (scanned, digital, forms)
PDF/A INPUT	Archival PDF/A files as merge source	`.pdf`	Legal and government archival documents
PDF OUTPUT	Single merged PDF document	`.pdf`	Combined reports, proposal packets
PAGE RANGE	Optional: include only specified pages	`—`	Selective merge from multi-page PDFs
REVERSE ORDER	Optional: merge files in reverse order	`—`	Reverse scan order correction

3 Simples Pasos

Preguntas Frecuentes

Todo lo que necesitas saber sobre esta herramienta de conversión.

Free users can merge up to 20 PDFs per operation, each up to 100 MB. The total combined size must be under 500 MB.

Yes. Pages within each PDF are always kept in order. You control the order of entire files relative to each other by dragging tiles in the uploader.

Enter the password for each protected file in the corresponding field. PDFs with edit or print restrictions can typically be merged without a password.

Yes. Form fields and digital signatures are carried through the merge without modification. Note that interactive form fields across merged PDFs may have duplicate field names.

Usually the merged file is approximately the sum of inputs. pdftk does not re-encode content, so there is no quality loss and minimal overhead beyond a shared cross-reference table.

Yes. Specify a page range for each uploaded file (e.g., pages 1–5 from File 1, pages 3–7 from File 2). Leave the range empty to include all pages.

12M+ usuarios confían

Quién Usa Esta Herramienta

Casos de uso reales de profesionales de diferentes industrias.

Legal Professional

Assemble Contract Packets

Merge a main contract PDF with exhibits, addenda, and signature pages into a single numbered document for filing.

Accountant

Combine Invoice Scans

Merge monthly invoice scans into a single PDF for expense reports, accounting records, or tax submissions.

Publisher

Compile Multi-Chapter Documents

Merge separately authored chapter PDFs into a single publication-ready document with unified numbering.

Project Manager

Bundle Project Deliverables

Combine specification, design, and test report PDFs into one deliverable package for client review.

Student

Merge Assignment Attachments

Combine your essay, bibliography, and appendix as separate PDFs into one submission file.

Admin Staff

Consolidate Scanned Pages

When a scanner outputs one PDF per page, merge them all into a single multi-page document in seconds.

Por qué EasyConv

Comparación

Vea cómo nos comparamos con otras soluciones

Feature	Our Tool EasyConv	Adobe Acrobat	Other Online
Merge up to 20 PDFs at once			Often limited
Drag-to-reorder before merging
Bookmarks preserved in output
Internal links preserved
Page range selection per file
No quality loss (no re-encoding)
No watermark on output
Gratis

Especificaciones Técnicas

Información técnica detallada sobre nuestro motor de conversión.

Límites

Max 20 PDFs per merge operation
Max 100 MB per individual file
Max 500 MB total combined input size

pdftk PDF Merge Combine Document Assembly

Motor

pdftk-java — byte-level PDF concatenation without re-rendering

Calidad

Zero quality loss — pages are copied byte-for-byte from originals

Velocidad

Typical: under 5 s for 20 files; speed depends on total combined file size

Seguridad

HTTPS transfer · isolated temp dir · auto-purged in 2 h

Max files

Up to 20 PDFs per operation

File size

100 MB per file · 500 MB total

Processing

No re-encoding — pure byte-level merge

Guía completa

How PDF Merging Works: pdftk, Page Structure, and Preserving Bookmarks Across Documents

Merging PDFs sounds trivial — it's just concatenating pages — but the internal PDF cross-reference structure, bookmarks, and link annotations all require careful handling to produce a correct combined document.

How pdftk Merges PDFs

pdftk (PDF Toolkit) operates at the object level. A PDF file is a collection of numbered objects — pages, fonts, images, annotations, and bookmarks — linked by a cross-reference table. When merging, pdftk reads all objects from each input PDF, renumbers them to avoid collisions, updates the cross-reference table, and writes a new combined PDF. Crucially, it does not decode or re-encode any content — images and text streams are copied verbatim, preserving exact quality.

Bookmarks (Outlines) Across Merged Documents

PDF bookmarks (called "outlines" in the specification) are stored as a tree of destination objects that point to specific pages. After merging, page numbers shift — what was page 1 of the second document may now be page 15 of the merged document. pdftk offsets all bookmark destinations by the correct page count, so bookmarks from each source PDF continue to point to the right pages in the merged output.

Internal Links and Cross-References

Hyperlinks within a PDF (like a table of contents linking to chapters) are stored as annotation objects with page-number destinations. The same page-offset correction applied to bookmarks is applied to all internal link annotations, ensuring that "click to go to Chapter 3" still works after merging. External URLs in PDFs are unaffected as they are absolute references.

File Order and the Drag-to-Reorder Interface

The order of pages in the merged PDF is determined entirely by the order in which you provide the input files. EasyConv's uploader renders each file as a draggable tile showing the file name and page count. The numbered order displayed exactly matches the output — file 1 starts at page 1, file 2 follows immediately after file 1's last page, and so on. Reordering before merging takes a fraction of a second and costs nothing.

Merging Password-Protected PDFs

PDFs can have two kinds of passwords: a user (open) password that must be entered to view the file, and an owner password that restricts printing, copying, or editing. pdftk can merge PDFs that have owner restrictions without a password in most cases. User-password-protected PDFs require the password to be entered for each file individually. The merged output is created without any password — apply a new password separately using the PDF Converter options if needed.