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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protect / Aplatir

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Fusionner formulaires, annotations et calques.

Ajoutez au moins un PDF dans le bac à fichiers pour commencer.

Explorer d'autres outils

Méthodologie & Transparence Technique

Bibliothèques utilisées

pdf-lib — Logique principale de construction et d'édition PDF
pdf.js — Rendu PDF et rastérisation des pages

Stratégie mémoire

Après chaque opération, URL.revokeObjectURL() est appelé immédiatement. Tous les handles de documents pdf.js sont détruits via pdfDoc.destroy(). Les workers sont terminés à la fin du traitement ou au démontage du composant.

Nous ne garantissons pas la conservation permanente des fichiers (puisque nous ne les stockons pas). Le traitement local des PDF protégés par mot de passe n'est pas pris en charge.

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.