KeptPDF vs. RAD PDF Comparison


KeptPDF	RAD PDF Red Software	+	+
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About Most online PDF tools upload your file to a server to do the work. KeptPDF does the work right in your browser: 25 tools including redact, sign, compress, OCR, organize, and compare. Your document is never part of a single request. The proof takes ten seconds: load the page, turn on Airplane Mode, and every tool still works. Free tier with no account. Pro adds bulk actions, personal redaction lists, and exports for $29/mo. The redaction engine auto-detects names, SSNs, phone numbers, addresses, and dates, removes the underlying text instead of drawing a box over it, and prints an audit certificate on every file that anyone can verify. A command line version runs the same engine on your own servers for bulk work: scanning bureaus, litigation support teams, and records departments process thousands of PDFs in one pass.		About Add a fully functional PDF editor to your ASP.NET website in minutes! Compatible with 99% of desktop & mobile browsers, from Internet Explorer 6 through the latest iOS Safari release, RAD PDF simply works. No plugins or other software needed. RAD PDF natively supports the most commonly used PDF features. Beyond a PDF reader, RAD PDF equips web applications with a browser-based PDF editor & PDF annotator. Features not even available in Adobe Acrobat Reader can be used to provide advanced PDF functionality. By enabling PDF form filling, PDF redaction, & PDF signing directly in the web browser, RAD PDF users can utilize PDF features without worrying about having the right platform or software installed! Allow your app to design new PDF forms, protect content, sign PDFs, & more using an intuitive graphical user interface (GUI). Client (JavaScript) and server APIs allow for endless possibilities .NET Core, Framework, & .NET 5+ supported Try editing any PDF with RAD PDF, FREE!
Platforms Supported Windows Not Supported Mac Not Supported Linux Not Supported Cloud Supported On-Premises Not Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported		Platforms Supported Windows Supported Mac Supported Linux Supported Cloud Supported On-Premises Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported
Audience Law firms, accounting practices, clinics, and anyone who shares documents they cannot afford to leak		Audience Developers and anyone searching for a web based PDF viewer, editor, and form filler to control PDF content access
Support Phone Support Not Supported 24/7 Live Support Not Supported Online Supported		Support Phone Support Supported 24/7 Live Support Not Supported Online Supported
API Offers API Not Supported		API Offers API Supported
Screenshots and Videos View more images or videos		Screenshots and Videos View more images or videos
Pricing $0 (Pro $29/month) Free Version Supported Free Trial Not Supported		Pricing $299 per developer RAD PDF is priced per developer or server machine Free Version Not Supported Free Trial Supported
Reviews/Ratings Overall 0.0 / 5 ease 0.0 / 5 features 0.0 / 5 design 0.0 / 5 support 0.0 / 5 This software hasn't been reviewed yet. Be the first to provide a review: Review this Software		Reviews/Ratings Overall 5.0 / 5 ease 5.0 / 5 features 5.0 / 5 design 4.3 / 5 support 5.0 / 5 Read all reviews
		Pros from Real Users Pros The best kind and fast service. in every inquiry I always receive a professional response. Great Tool! After evaluating several other replacements for our current PDF solution, RAD PDF is the best fit by a large margin. The architecture is a very close fit to our current solution and will require very little conversion. Support for signatures was a key feature we were looking for, and RAD PDF provides solid signature support.
Training Documentation Supported Webinars Not Supported Live Online Not Supported In Person Not Supported		Training Documentation Supported Webinars Not Supported Live Online Not Supported In Person Not Supported
Company Information KeptPDF Founded: 2026 United States keptpdf.com		Company Information Red Software Founded: 2007 United States www.radpdf.com
Alternatives ReadyRedact		Alternatives Nutrient SDK Nutrient
Arthize		Apryse PDF SDK Apryse
Redact Fordata		Adobe PDF Library SDK Datalogics Inc.
PDF Guru		MuPDF Artifex Software
PDFSign View All		Nitro PDF Nitro Software View All
Categories PDF Supported KeptPDF is a PDF toolkit that runs entirely in your browser. Nothing uploads: redaction, OCR, compression, signing, splitting, merging, and the rest of its 25 tools all run on your own device, so the document never touches a server. The redaction engine auto-detects names, SSNs, phone numbers, addresses, and dates, removes the underlying text instead of covering it, and prints a verifiable audit certificate on every file. A command line version handles thousands of PDFs in one pass for scanning bureaus, litigation support teams, and records departments. The core tools are free with no sign-up.		Categories Document Generation Supported PDF Supported PDF Annotators Supported PDF APIs Supported PDF Editors Supported PDF Generators Supported PDF Readers Supported PDF Redaction Supported
PDF Features Annotations Supported Convert to PDF Supported Digital Signature Not Supported Encryption Supported Merge / Append Supported PDF Reader Supported Watermarking Supported		PDF Features Annotations Supported Convert to PDF Not Supported Digital Signature Supported Encryption Supported Merge / Append Supported PDF Reader Supported Watermarking Supported Show More Features Document Generation Features Batch Processing Supported Collaboration Supported Digital Signature Supported Interaction Tracking Supported Multiple Output Formats Supported Templates Supported PDF Editors Features Access Controls / Permissions Supported Annotations Supported Commenting / Notes Supported Compare Side-by-Side Not Supported Customizable Branding Supported Delete Pages Supported Electronic Signature Supported Forms Management Supported Full Text Search Supported Merge / Append Supported Offline Access Supported Optical Character Recognition (OCR) Not Supported Rearrange Pages Supported Rotate Pages Supported Watermarking Supported
Integrations ASP.NET Not Supported ASP.NET Core Not Supported Amazon EC2 Not Supported Azure App Service Not Supported Azure Virtual Machines Not Supported Google Chrome Not Supported Google Drive Supported Microsoft Edge Not Supported Microsoft IIS Not Supported Mozilla Firefox Not Supported NuGet Not Supported Opera Not Supported SQL Server Not Supported Safari Not Supported Show More Integrations View All 1 Integration		Integrations ASP.NET Supported ASP.NET Core Supported Amazon EC2 Supported Azure App Service Supported Azure Virtual Machines Supported Google Chrome Supported Google Drive Not Supported Microsoft Edge Supported Microsoft IIS Supported Mozilla Firefox Supported NuGet Supported Opera Supported SQL Server Supported Safari Supported Show More Integrations View All 13 Integrations
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