Free Online XLSX Signature

Discover GroupDocs.Signature free online app!

Sign electronically PDF, DOCX, XLSX, PPTX, RTF, ODS, ODT, ODP, JPEG, PNG, GIF and many more document formats (see supported formats list)
Protect your XLSX documents with electronic signatures fast and easy
eSign XLSX from anywhere - it works on all platforms including Windows, MacOS, Android and iOS
All XLSX files are processed on our servers so no additional plugins or software installation is required
Powerful set of XLSX document eSign types: Digital, QR-code, Barcode, Form Field, Text, Stamp and others
All XLSX files are processed using GroupDocs.Signature document eSign API

XLSX Microsoft Excel Open XML Spreadsheet

XLSX is well-known format for Microsoft Excel documents that was introduced by Microsoft with the release of Microsoft Office 2007. Based on structure organized according to the Open Packaging Conventions as outlined in Part 2 of the OOXML standard ECMA-376, the new format is a zip package that contains a number of XML files. The underlying structure and files can be examined by simply unzipping the .xlsx file.

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How to sign a XLSX document using GroupDocs.Signature App

For signing XLSX your document first select sign type (digital, text, barcode, image, stamp, qr code).
Enter signature value or select image signature if sign type is Image or Digital.
Select your XLSX document for signing.
Select signature location and size and click Sign Now button.
Once your XLSX document is signed click on Download Now button.
You may also send the download link to any email address by clicking on Email button.

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GroupDocs.Signature for .NET API

Flexible document eSign .NET library & API.

Secure you solutions with powerful document eSign features!

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GroupDocs.Signature for Java

Java version of GroupDocs.Signature library & API.

Best choise for document signing in Java!

GroupDocs.Signature Cloud

Easy to use cross-platform Cloud solution.

eSign documents from popular programming languages with our Cloud API!

Open-Source UI/UX Solutions

GroupDocs.Signature for .NET and Java

Integrate document eSign features in your apps using our out-of-the-box open-source front-end solutions based on Angular and GroupDocs.Signature for .NET/Java.

UI/UX solutions can be run as standalone application or can be integrated in any .NET/Java application, download and build your eSign solution within few clicks!

GroupDocs.Total for .NET and Java

GroupDocs.Total is an open-source UI/UX solution where all GroupDocs products are working together as one.

GroupDocs.Total provides multiple high quality features against over 120 document formats, such as conversion, signature, parser and much more!

GroupDocs.Total for .NET MVC Example
GroupDocs.Total for .NET WebForms
GroupDocs.Total for Java Dropwizard (Coming Soon)
GroupDocs.Total for Java Spring (Coming Soon)

Other Signature file formats

You can also sign other file formats. Please see the list below.

BMP Signature (Bitmap Image File)

CDR Signature (CorelDRAW Image File)

CMX Signature (CorelDRAW Metafile Exchange Image File)

CSV Signature (Comma Separated Values File)

DOC Signature (Microsoft Word Document)

DOCM Signature (Word Open XML Macro-Enabled Document)

DOCX Signature (Microsoft Word Open XML Document)

DOT Signature (Word Document Template)

DOTM Signature (Word Open XML Macro-Enabled Document Template)

DOTX Signature (Word Open XML Document Template)

GIF Signature (Graphical Interchange Format File)

JPEG Signature (JPEG Image)

JPG Signature (JPEG Image)

ODP Signature (OpenDocument Presentation)

ODS Signature (OpenDocument Spreadsheet)

ODT Signature (OpenDocument Text Document)

OTP Signature (OpenDocument Presentation Template)

OTS Signature (OpenDocument Spreadsheet Template)

OTT Signature (OpenDocument Document Template)

PDF Signature (Portable Document Format File)

PNG Signature (Portable Network Graphic)

POTM Signature (PowerPoint Open XML Macro-Enabled Presentation Template)

POTX Signature (PowerPoint Open XML Presentation Template)

PPS Signature (PowerPoint Slide Show)

PPSM Signature (PowerPoint Open XML Macro-Enabled Slide)

PPSX Signature (PowerPoint Open XML Slide Show)

PPT Signature (PowerPoint Presentation)

PPTM Signature (PowerPoint Open XML Macro-Enabled Presentation)

PPTX Signature (PowerPoint Open XML Presentation)

RTF Signature (Rich Text Format File)

SVG Signature (Comma Separated Values File)

TIF Signature (Tagged Image File)

TIFF Signature (Tagged Image File Format)

WEBP Signature (WebP Image)

WMF Signature (Windows Metafile)

XLS Signature (Excel Spreadsheet)

XLSB Signature (Excel Binary Spreadsheet)

XLSM Signature (Excel Open XML Macro-Enabled Spreadsheet)

XLTM Signature (Microsoft Excel Macro-Enabled Template)

XLTX Signature (Excel Open XML Spreadsheet Template)

Free Online XLSX Document Signature

Sign XLSX documents online from any device, with a modern browser like Chrome, Firefox