Can I un-flatten a document?

No. Flattening is irreversible. Keep a copy of the interactive version before applying.

What is the difference between saving and flattening?

Saving preserves interactive fields. Flattening destroys them — the result is a static image of the form, not an editable form.

Are digital signatures affected?

Yes. Flattening renders signature appearance into pixels, which invalidates the cryptographic signature. Apply only to forms where the signature appearance no longer needs to be verified.

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Aplanar

Fusionar formularios, anotaciones y capas.

Añade al menos un PDF en la bandeja para empezar.

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Metodología y Transparencia Técnica

Bibliotecas utilizadas

pdf-lib — Lógica principal de construcción y edición de PDF
pdf.js — Renderizado de PDF y rasterización de páginas

Estrategia de memoria

Tras cada operación, se llama a URL.revokeObjectURL() inmediatamente. Todos los handles de documentos pdf.js se destruyen mediante pdfDoc.destroy(). Los workers se terminan al completar el procesamiento o al desmontar el componente.

No garantizamos el almacenamiento permanente de archivos (ya que no los almacenamos). El procesamiento local de PDFs protegidos con contraseña no está soportado.

Key Features

Burn interactive fields to static content
Form fields, checkboxes, and text inputs are rendered into the page as permanent visual elements.
Annotations and layers
All PDF annotations (comments, stamps, ink) and optional content layers are merged into the base page.
Print and archive ready
The flattened PDF renders identically in every viewer and prints consistently — no renderer variations.

Common Use Cases

Used to finalise filled application forms before submission, create print-ready files from form-based designs, or archive completed contracts that must not be altered.

Frequently Asked Questions

Can I un-flatten a document?: No. Flattening is irreversible. Keep a copy of the interactive version before applying.
What is the difference between saving and flattening?: Saving preserves interactive fields. Flattening destroys them — the result is a static image of the form, not an editable form.
Are digital signatures affected?: Yes. Flattening renders signature appearance into pixels, which invalidates the cryptographic signature. Apply only to forms where the signature appearance no longer needs to be verified.