Signer et sécuriser des PDFs

Sécurisez et garantissez l'authenticité des PDFs avec des algorithmes de cryptage modernes, des permissions et des signatures en quelques lignes de code.

Assurez l'authenticité de votre document

Signature numérique

Signez numériquement vos PDFs pour les authentifier et fournir une preuve de paternité ou d'approbation. Cette fonctionnalité est essentielle pour la documentation légale ou officielle.

Apprenez comment : signer vos PDF

using IronPdf;
using IronPdf.Signing;
// Cryptographically sign an existing PDF in 1 line of code!
new IronPdf.Signing.PdfSignature("Iron.p12", "123456").SignPdfFile("any.pdf");

using IronPdf;
using IronPdf.Signing;
// Cryptographically sign an existing PDF in 1 line of code!
new IronPdf.Signing.PdfSignature("Iron.p12", "123456").SignPdfFile("any.pdf");

Imports IronPdf
Imports IronPdf.Signing
' Cryptographically sign an existing PDF in 1 line of code!
Call New IronPdf.Signing.PdfSignature("Iron.p12", "123456").SignPdfFile("any.pdf")

Modifier et signer l'historique des révisions

Maintenez et modifiez l'historique des révisions de vos documents PDF. Suivez les changements, les approbations, et les signatures au fil du temps pour une meilleure gestion des documents.

Apprenez à : modifier et réviser des fichiers PDF

using IronPdf;
using IronPdf.Rendering;
// Import PDF and enable TrackChanges
PdfDocument pdf = PdfDocument.FromFile("annual_census.pdf", TrackChanges: ChangeTrackingModes.EnableChangeTracking);
// ... Various edits ...
pdf.SignWithFile("/assets/IronSignature.p12", "password", null, IronPdf.Signing.SignaturePermissions.AdditionalSignaturesAndFormFillingAllowed);
PdfDocument pdfWithRevision = pdf.SaveAsRevision();
pdfWithRevision.SaveAs("annual_census_2.pdf");

using IronPdf;
using IronPdf.Rendering;
// Import PDF and enable TrackChanges
PdfDocument pdf = PdfDocument.FromFile("annual_census.pdf", TrackChanges: ChangeTrackingModes.EnableChangeTracking);
// ... Various edits ...
pdf.SignWithFile("/assets/IronSignature.p12", "password", null, IronPdf.Signing.SignaturePermissions.AdditionalSignaturesAndFormFillingAllowed);
PdfDocument pdfWithRevision = pdf.SaveAsRevision();
pdfWithRevision.SaveAs("annual_census_2.pdf");

Imports IronPdf
Imports IronPdf.Rendering
' Import PDF and enable TrackChanges
Dim pdf As PdfDocument = PdfDocument.FromFile("annual_census.pdf", TrackChanges:=ChangeTrackingModes.EnableChangeTracking)
'... Various edits ...
pdf.SignWithFile("/assets/IronSignature.p12", "password", Nothing, IronPdf.Signing.SignaturePermissions.AdditionalSignaturesAndFormFillingAllowed)
Dim pdfWithRevision As PdfDocument = pdf.SaveAsRevision()
pdfWithRevision.SaveAs("annual_census_2.pdf")

Modifier les métadonnées PDF

Modifiez les métadonnées de vos fichiers PDF, telles que l'auteur, le titre, et le sujet, pour améliorer l'organisation et la recherche de documents.

Apprenez à : modifier les métadonnées

using IronPdf;
using System;

ChromePdfRenderer renderer = new ChromePdfRenderer();
PdfDocument pdf = renderer.RenderHtmlAsPdf("<h1>Metadata</h1>");
// Access the MetaData class and set the pre-defined metadata properties.
pdf.MetaData.Author = "Iron Software";
pdf.MetaData.CreationDate = DateTime.Today;
pdf.MetaData.Creator = "IronPDF";
pdf.SaveAs("pdf-with-metadata.pdf");

using IronPdf;
using System;

ChromePdfRenderer renderer = new ChromePdfRenderer();
PdfDocument pdf = renderer.RenderHtmlAsPdf("<h1>Metadata</h1>");
// Access the MetaData class and set the pre-defined metadata properties.
pdf.MetaData.Author = "Iron Software";
pdf.MetaData.CreationDate = DateTime.Today;
pdf.MetaData.Creator = "IronPDF";
pdf.SaveAs("pdf-with-metadata.pdf");

Imports IronPdf
Imports System

Dim renderer As New ChromePdfRenderer()
Dim pdf As PdfDocument = renderer.RenderHtmlAsPdf("<h1>Metadata</h1>")
' Access the MetaData class and set the pre-defined metadata properties.
pdf.MetaData.Author = "Iron Software"
pdf.MetaData.CreationDate = DateTime.Today
pdf.MetaData.Creator = "IronPDF"
pdf.SaveAs("pdf-with-metadata.pdf")

Améliorez la gestion transparente des formulaires PDF

Créer des formulaires PDF

Créez des formulaires PDF interactifs avec des champs remplissables, cases à cocher, boutons radio, et plus encore. Idéal pour recueillir des informations ou créer des enquêtes.

Apprenez à : créer des formulaires PDF

using IronPdf;

// Input and Text Area forms HTML
string FormHtml = @"
<html>
    <body>
        <h2>Editable PDF Form</h2>
        <form>
            First name: <br> <input type='text' name='firstname' value=''> <br>
            Last name: <br> <input type='text' name='lastname' value=''> <br>
            Address: <br> <textarea name='address' rows='4' cols='50'></textarea>
        </form>
    </body>
</html>
";

// Instantiate Renderer
ChromePdfRenderer Renderer = new ChromePdfRenderer();
Renderer.RenderingOptions.CreatePdfFormsFromHtml = true;
Renderer.RenderHtmlAsPdf(FormHtml).SaveAs("textAreaAndInputForm.pdf");

using IronPdf;

// Input and Text Area forms HTML
string FormHtml = @"
<html>
    <body>
        <h2>Editable PDF Form</h2>
        <form>
            First name: <br> <input type='text' name='firstname' value=''> <br>
            Last name: <br> <input type='text' name='lastname' value=''> <br>
            Address: <br> <textarea name='address' rows='4' cols='50'></textarea>
        </form>
    </body>
</html>
";

// Instantiate Renderer
ChromePdfRenderer Renderer = new ChromePdfRenderer();
Renderer.RenderingOptions.CreatePdfFormsFromHtml = true;
Renderer.RenderHtmlAsPdf(FormHtml).SaveAs("textAreaAndInputForm.pdf");

Imports IronPdf

' Input and Text Area forms HTML
Dim FormHtml As String = "
<html>
    <body>
        <h2>Editable PDF Form</h2>
        <form>
            First name: <br> <input type='text' name='firstname' value=''> <br>
            Last name: <br> <input type='text' name='lastname' value=''> <br>
            Address: <br> <textarea name='address' rows='4' cols='50'></textarea>
        </form>
    </body>
</html>
"

' Instantiate Renderer
Dim Renderer As New ChromePdfRenderer()
Renderer.RenderingOptions.CreatePdfFormsFromHtml = True
Renderer.RenderHtmlAsPdf(FormHtml).SaveAs("textAreaAndInputForm.pdf")

Remplir et Modifier des formulaires existants

Remplissez et modifiez facilement des formulaires PDF existants. Modifiez les champs de formulaire, mettez à jour le contenu, et enregistrez les modifications pour une gestion fluide des documents.

Apprenez à : remplir et modifier des formulaires

using IronPdf;

PdfDocument pdf = PdfDocument.FromFile("textAreaAndInputForm.pdf");

// Set text input form values
pdf.Form.FindFormField("firstname").Value = "John";
pdf.Form.FindFormField("lastname").Value = "Smith";

// Set text area form values
pdf.Form.FindFormField("address").Value = "Iron Software LLC\r\n205 N. Michigan Ave.";

pdf.SaveAs("textAreaAndInputFormEdited.pdf");

using IronPdf;

PdfDocument pdf = PdfDocument.FromFile("textAreaAndInputForm.pdf");

// Set text input form values
pdf.Form.FindFormField("firstname").Value = "John";
pdf.Form.FindFormField("lastname").Value = "Smith";

// Set text area form values
pdf.Form.FindFormField("address").Value = "Iron Software LLC\r\n205 N. Michigan Ave.";

pdf.SaveAs("textAreaAndInputFormEdited.pdf");

Imports IronPdf

Dim pdf As PdfDocument = PdfDocument.FromFile("textAreaAndInputForm.pdf")

' Set text input form values
pdf.Form.FindFormField("firstname").Value = "John"
pdf.Form.FindFormField("lastname").Value = "Smith"

' Set text area form values
pdf.Form.FindFormField("address").Value = "Iron Software LLC" & vbCrLf & "205 N. Michigan Ave."

pdf.SaveAs("textAreaAndInputFormEdited.pdf")

Aplatir les champs de formulaires

Aplatissez les champs de formulaire pour verrouiller les données saisies et empêcher toute autre modification, garantissant l'intégrité du contenu du formulaire.

Apprenez comment : aplatir les champs de formulaire

using IronPdf;

// Select the desired PDF File
PdfDocument pdf = PdfDocument.FromFile("textAreaAndInputFormEdited.pdf");

// Flatten the pdf
pdf.Flatten();

// Save as a new file
pdf.SaveAs("after_flatten.pdf");

using IronPdf;

// Select the desired PDF File
PdfDocument pdf = PdfDocument.FromFile("textAreaAndInputFormEdited.pdf");

// Flatten the pdf
pdf.Flatten();

// Save as a new file
pdf.SaveAs("after_flatten.pdf");

Imports IronPdf

' Select the desired PDF File
Dim pdf As PdfDocument = PdfDocument.FromFile("textAreaAndInputFormEdited.pdf")

' Flatten the pdf
pdf.Flatten()

' Save as a new file
pdf.SaveAs("after_flatten.pdf")

Assurez la sécurité de votre documentation

Assainir les PDFs

Assainissez vos PDFs en supprimant les métadonnées cachées, le contenu sensible, et les commentaires pour protéger la confidentialité et la sécurité de votre document.

Apprenez comment : nettoyer les fichiers PDF

using IronPdf;

// Import PDF document
PdfDocument pdf = PdfDocument.FromFile("sample.pdf");

// Sanitize with Bitmap
PdfDocument sanitizeWithBitmap = Cleaner.SanitizeWithBitmap(pdf);

// Sanitize with SVG
PdfDocument sanitizeWithSvg = Cleaner.SanitizeWithSvg(pdf);

// Export PDFs
sanitizeWithBitmap.SaveAs("sanitizeWithBitmap.pdf");
sanitizeWithSvg.SaveAs("sanitizeWithSvg.pdf");

using IronPdf;

// Import PDF document
PdfDocument pdf = PdfDocument.FromFile("sample.pdf");

// Sanitize with Bitmap
PdfDocument sanitizeWithBitmap = Cleaner.SanitizeWithBitmap(pdf);

// Sanitize with SVG
PdfDocument sanitizeWithSvg = Cleaner.SanitizeWithSvg(pdf);

// Export PDFs
sanitizeWithBitmap.SaveAs("sanitizeWithBitmap.pdf");
sanitizeWithSvg.SaveAs("sanitizeWithSvg.pdf");

Imports IronPdf

' Import PDF document
Dim pdf As PdfDocument = PdfDocument.FromFile("sample.pdf")

' Sanitize with Bitmap
Dim sanitizeWithBitmap As PdfDocument = Cleaner.SanitizeWithBitmap(pdf)

' Sanitize with SVG
Dim sanitizeWithSvg As PdfDocument = Cleaner.SanitizeWithSvg(pdf)

' Export PDFs
sanitizeWithBitmap.SaveAs("sanitizeWithBitmap.pdf")
sanitizeWithSvg.SaveAs("sanitizeWithSvg.pdf")

Définir Mot de passe et Permissions

Définissez des mots de passe et des permissions sur vos PDFs pour contrôler l'accès, empêcher les modifications non autorisées et protéger les informations sensibles.

Apprenez comment : définir les autorisations des fichiers PDF

using IronPdf;

ChromePdfRenderer renderer = new ChromePdfRenderer();

PdfDocument pdf = renderer.RenderHtmlAsPdf("<h1>Secret Information:</h1> Hello World");

// Password to edit the pdf
pdf.SecuritySettings.OwnerPassword = "123password";

// Password to open the pdf
pdf.SecuritySettings.UserPassword = "password123";
pdf.SaveAs("protected.pdf");

using IronPdf;

ChromePdfRenderer renderer = new ChromePdfRenderer();

PdfDocument pdf = renderer.RenderHtmlAsPdf("<h1>Secret Information:</h1> Hello World");

// Password to edit the pdf
pdf.SecuritySettings.OwnerPassword = "123password";

// Password to open the pdf
pdf.SecuritySettings.UserPassword = "password123";
pdf.SaveAs("protected.pdf");

Imports IronPdf

Dim renderer As New ChromePdfRenderer()

Dim pdf As PdfDocument = renderer.RenderHtmlAsPdf("<h1>Secret Information:</h1> Hello World")

' Password to edit the pdf
pdf.SecuritySettings.OwnerPassword = "123password"

' Password to open the pdf
pdf.SecuritySettings.UserPassword = "password123"
pdf.SaveAs("protected.pdf")