在这篇文章中，您将了解如何签署 PDF(sign a PDF)文档。您可以绘制签名或类型签名并将其转换为手写风格签名。之后，您可以将签名添加到PDF文档中页面的任何部分，并使用添加的签名保存PDF。您还可以更改签名的颜色及其大小。
尽管可以使用许多付费和免费的PDF 编辑器工具，但大多数这些工具都缺少向PDF添加签名的功能。(PDF)因此，我们创建了这个列表，其中涵盖了一些用于签署PDF文档的最佳免费工具。
为 PDF 添加签名
如果您想为PDF签名，这篇文章将介绍可让您在(PDF)PDF中添加签名的免费工具。您可以使用它们键入或绘制签名。
- Adobe Acrobat Reader DC
- Gaaiho阅读器
- 福昕阅读器
- 小型PDF
- 光PDF。
1] Adobe Acrobat Reader DC
Adobe Acrobat Reader DC是一款非常流行的PDF阅读器。它附带了许多有用的工具，其中一些是付费的，而另一些是免费的。它有一个免费的填写和签名(Fill & Sign)工具。您可以使用此工具键入您的签名、绘制签名和添加签名图像（TIFF、GIF、TIF、JPG和PNG）。它还允许您添加签名首字母或删除签名。还提供了邀请签名者添加签名(invite signees to add signatures)的选项，但您需要一个Adobe帐户。
下载(Download) Adobe Acrobat Reader DC并安装。在下载页面上，您应该取消选中可选优惠和额外工具。安装(Install)并启动软件。
使用“文件(File)”菜单打开PDF，然后通过键入或绘制签名(Sign document by typing or drawing a signature)图标来按“签名”文档。或者，您也可以访问“工具(Tools)”菜单并选择“填写并签名”(Fill & Sign)工具。
您将看到两个选项：Add Signature和Add Initials。使用第一个选项。现在您可以使用任何可用选项：Type、Draw和Image。
对于第一个选项，它提供了 4 种不同的手写风格。对于第二个选项，它允许您以徒手模式绘制以创建您的签名。创建签名后，按应用(Apply)按钮。
之后，再次使用相同的签名文档...(Sign document…)图标，这一次您将看到您创建的签名。单击该签名，它将在您的PDF文档中可见。现在，您可以使用颜色(Color)图标来更改签名的默认颜色。有 18 种不同的颜色可供选择。
将您的签名放在PDF页面上的任何位置，并使用给定选项更改其大小。最后，您可以使用“文件”菜单中的“另存为(Save As)”或“保存(Save)”选项来保存带有添加签名的PDF 。
2] Gaaiho阅读器
Gaaiho Reader是其他免费 PDF 阅读器工具的有力竞争者，也是 Adobe Acrobat Reader DC(Adobe Acrobat Reader DC)的替代品。它还具有许多功能，向PDF文档添加签名就是其中之一。它提供了两种类型的选项来向PDF添加签名：绘制我的签名(Draw my signature)和键入我的签名(Type my signature)。
在第一个选项中，您可以开始徒手绘制以创建具有自定义颜色和签名厚度的签名。在第二个选项中，您可以键入一些单词作为签名并设置其颜色、字体，并使其变为粗体和斜体。您无法选择手写样式，但存在管理签名(manage signatures)的选项，可让您删除创建的签名、添加签名、重命名签名等。
使用此链接(this link)下载此软件。添加 PDF，然后单击主(Home)菜单下的手写签名(Handwritten Signature)工具。之后，单击放置手写签名(Place a Handwritten Signature)选项。它会打开一个盒子。
在该框中，选择签名类型，然后您可以绘制或键入您的签名。使用为所选签名类型提供的选项，为您的签名命名，然后保存。
下次，使用相同的手写签名(Handwritten Signature)工具选择一个签名并将其添加到您的PDF文档中。最后，使用“文件(File)”菜单下的“另存为(Save As)”或“保存(Save)”按钮创建PDF的副本或覆盖原始PDF 。这将生成带有您签名的PDF 。
提示(TIP)：Google Chrome 用户可以使用 New Acrobat Online 转换、压缩、签署 PDF 文档。
3]福昕阅读器
Foxit Reader是签署(Reader)PDF文件的另一个不错的选择。它允许您绘制签名(Draw Signature)、导入签名(Import signature)文件（PDF、BMP、GIF、TIFF、PNG、JPG等）、类型签名(Type Signature)和从剪贴板(Paste Signature from clipboard)（文本或图像）粘贴签名。添加在线签名(Online Signature)的选项也在那里，但它对我不起作用，因为我遇到了错误。
下载(Download) Foxit Reader并开始安装过程。在安装过程中取消选中(Uncheck)不需要的或额外的选项。打开界面后，添加一个PDF文件。
转到“填写并签名”(Fill & Sign)选项卡，然后单击“创建签名”(Create Signature)按钮。现在将打开一个框，您将在其中看到用于创建签名的不同按钮。使用 Draw Signature(Use Draw Signature)或任何其他按钮制作您的签名并保存。创建(Create)任意数量的签名。
之后，您可以再次使用“填写(Fill)并签名(Sign)”选项卡并使用任何可用的签名。添加签名后，您还可以更改其大小。最后，使用“文件(File)”菜单创建原始PDF的副本或添加对现有PDF的更改，并保存带有签名的PDF 。
4]小PDF
SmallPDF带来了 20+ 种工具来拆分、压缩、合并、转换、保护 PDF等。您需要使用eSign PDF工具以徒手风格创建签名或从 PC(create signatures)上传签名图像(upload a signature image)并将其添加到特定位置在PDF文档中。
您还可以邀请签名者(invite signers)将他们的签名添加到该PDF中。它的免费计划可让您创建两个签名（姓名首字母和实际签名）并且一天只处理两个PDF文档，但(PDF)在线签署 PDF(sign PDF online)还是不错的。
使用此链接(Use this link)打开此服务的 eSign PDF页面。之后，您可以从设备（或桌面）、Google Drive或Dropbox上传(Dropbox)PDF。上传PDF(PDF)文档后，您可以查看其页面。在右侧边栏上，您将看到创建签名(Create signature)和创建首字母缩写(Create initials)按钮。
使用第一个按钮，将打开一个框。使用该框，您可以绘制自己的签名、键入签名并选择三种手写样式中的任何一种，或上传签名图像（JPG、GIF、PNG或BMP）。三种不同的颜色可用于绘制签名。
相同的选项可用于创建首字母缩写。它还会自动优化签名以使其看起来更好。
签名准备好后，将添加到右侧边栏中。只需(Just)将签名拖放到PDF文档的某个部分即可。之后，您可以按FINISH & SIGN按钮来获取带有签名的输出PDF 。
如果需要，您还可以使用右侧边栏上的按钮邀请签名者。您可以添加签名者的名字和姓氏、您的电子邮件地址及其电子邮件地址。他们将收到一个链接，用于打开PDF并使用此工具签署该PDF 。一旦所有签名者都签署了PDF ，您将在电子邮件中收到PDF的下载链接。
5] LightPDF
LightPDF服务带来了一个非常简单但有效的工具，可以在线为PDF添加签名。它的签名 PDF(Sign PDF)工具可让您绘制签名或上传签名（JPG、PNG、JFIF等）图像。您可以创建多个签名，然后使用其中任何一个。它还具有一项有趣的功能，您可以使用它单击一下即可将签名添加到(add a signature to all the pages)PDF文档的所有页面。
此链接(This link)将打开其签名PDF页面。在那里，您可以使用“选择文件”(Choose File)按钮从桌面上传PDF 。上传PDF后，使用创建签名(Create signature)按钮，您将看到两个选项。绘制签名(Draw Signature)并上传图片(Upload Image)。使用第一个选项，您可以使用 60 多种颜色绘制您的签名。按保存(Save)按钮。
现在您的签名已准备就绪，将鼠标光标放在创建签名(Create signature)选项上。现在您将看到您添加的签名。将该签名拖放(Drag)到PDF上的任何部分。它还允许您增加/减少签名的大小。还有一个+按钮，您可以使用它为所有页面添加签名。
这些免费工具足以满足轻松签署PDF文件的需求。(PDF)该软件比在线服务具有优势，因为您不必担心文件大小限制。
How to sign a PDF using free software or online tools
In this post, you will see how to sign a PDF document. You can draw a signature or type signature and convert it to a handwriting style signature. After that, you can add your signature to any part of a page in the PDF document and save PDF with added signature. You will also be able to change the color of the signature and its size.
Though a lot of paid and free PDF editor tools are available to use, the feature to add signatures to a PDF is missing in most of those tools. Therefore, we created this list that covers some best free tools to sign PDF documents.
Add a signature to PDF
If you want to sign a PDF, this post talks of free tools that let you add a signature to PDF. You can type or draw a signature using them.
- Adobe Acrobat Reader DC
- Gaaiho Reader
- Foxit Reader
- SmallPDF
- LightPDF.
1] Adobe Acrobat Reader DC
Adobe Acrobat Reader DC is a very popular PDF reader. It comes with dozens of useful tools in which some of them are paid and others are free. It has a Fill & Sign tool which is free. You can use this tool to type your signature, draw a signature, and add a signature image (TIFF, GIF, TIF, JPG, and PNG). It also lets you add signature initials or delete a signature. The option to invite signees to add signatures is also present, but you need an Adobe account for that.
Download Adobe Acrobat Reader DC and install it. On the download page, you should uncheck optional offers and extra tools. Install and launch the software.
Open a PDF using the File menu and then press Sign document by typing or drawing a signature icon. Or else, you can also access the Tools menu and select Fill & Sign tool.
You will see two options: Add Signature and Add Initials. Use the first option. Now you can use any of the available options: Type, Draw, and Image.
For the first option, it provides 4 different handwriting styles. For the second option, it lets you draw in free-hand mode to create your signature. When your signature is created, press the Apply button.
After that, again use the same Sign document…icon, and this time you will see the signature created by you. Click on that signature and it will visible on your PDF document. Now, you can use the Color icon to change the default color of the signature. 18 different colors are available.
Place your signature anywhere on a PDF page and change its size using the given option. Finally, you can save PDF with an added signature using Save As or Save option present in the File menu.
2] Gaaiho Reader
Gaaiho Reader is a good competitor to other free PDF readers tools and an alternative to Adobe Acrobat Reader DC. It also comes with a lot of features and adding signatures to a PDF document is one of them. It provides two types of options to add a signature to a PDF: Draw my signature and Type my signature.
In the first option, you can start a free-hand draw to create a signature with custom color and signature thickness. In the second option, you can type some words as a signature and set its color, font, and make it bold and italic. You can’t select a handwriting style, but the option to manage signatures is present which lets you delete created signatures, add signatures, rename a signature, etc.
Download this software using this link. Add a PDF and then click on the Handwritten Signature tool present under the Home menu. After that, click on Place a Handwritten Signature option. It will open a box.
In that box, select the signature type, and then you can draw or type your signature. Use the options given for the selected signature type, give a name to your signature, and save it.
The next time, use the same Handwritten Signature tool to select a signature and add it to your PDF document. Finally, create a copy of your PDF or overwrite the original PDF using Save As or Save button present under the File menu. This will generate PDF with your signature.
TIP: Google Chrome users can convert, compress, sign PDF documents using New Acrobat Online.
3] Foxit Reader
Foxit Reader is another nice option to sign a PDF file. It lets you Draw Signature, Import signature file (PDF, BMP, GIF, TIFF, PNG, JPG, etc.), Type Signature, and Paste Signature from clipboard (text or image). The option to add Online Signature is also there but it didn’t work for me as I encountered an error.
Download Foxit Reader and begin the installation process. Uncheck unwanted or extra options during the installation. When the interface is opened, add a PDF file.
Go to Fill & Sign tab and click on the Create Signature button. Now a box will open where you will see different buttons to create a signature. Use Draw Signature or any other button to make your signature and save it. Create as many signatures as you want.
After that, you can again use the Fill & Sign tab and use any of the available signatures. When the signature is added, you can also change its size. At last, use create a copy of the original PDF or add changes to existing PDF using the File menu and save your PDF with signature(s).
4] SmallPDF
SmallPDF brings 20+ tools to split, compress, merge, convert, protect PDF, etc. You need to use eSign PDF tool to create signatures in a free-hand style or upload a signature image from the PC and add it to a particular place in the PDF document.
You can also invite signers to add their signatures to that PDF. Its free plan lets you create two signatures (initials and actual signature) and process only two PDF documents in a day, but it is pretty good to sign PDF online.
Use this link to open the eSign PDF page of this service. After that, you can upload PDF from the device (or desktop), Google Drive, or Dropbox. Once the PDF document is uploaded, you can view its pages. On the right sidebar, you will see the Create signature and Create initials buttons.
Use the first button and a box will open. Using that box, you can draw your own signature, type a signature, and select any of the three handwriting styles, or upload a signature image (JPG, GIF, PNG, or BMP). Three different colors are available to draw a signature.
The same options are available for creating initials. It also automatically optimizes the signature to make it look even good.
When the signature is ready, it is added to the right sidebar. Just drag n drop the signature to a part on your PDF document. After that, you can press the FINISH & SIGN button to grab the output PDF with your signatures.
If you want, you can also invite signers using the button available on the right sidebar. You can add the first and last names of signers, your email address, and their email addresses. They will receive a link to open PDF and sign that PDF using this tool. Once all signers have signed the PDF, you will receive a download link for PDF in your email.
5] LightPDF
LightPDF service brings a very simple but effective tool to add signatures to PDF online. Its Sign PDF tool lets you draw a signature or upload signature (JPG, PNG, JFIF, etc.) image. You can create multiple signatures and then use any of them. It also has one interesting feature using which you can add a signature to all the pages of your PDF document in a single click.
This link will open its sign PDF page. There, you can use the Choose File button to upload PDF from the desktop. When PDF is uploaded, use the Create signature button and you will see two options. Draw Signature and Upload Image. Use the first option and you can draw your signature using 60+ colors. Press the Save button.
Now your signature is ready, place your mouse cursor on the Create signature option. Now you will see the signature added by you. Drag n drop that signature to any part on PDF. It also lets you increase/decrease the size of the signature. There is also a + button using which you can add a signature to all the pages.
These free tools are good enough to fulfill the need to sign PDF files with ease. The software have an advantage over online services because you don’t have to worry about file size limit.
