CSS HTML Validator vs. Siteimprove Comparison


CSS HTML Validator AI Internet Solutions LLC	Siteimprove	+	+
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About CSS HTML Validator for Windows, Mac, and Linux is a fast, powerful, highly user configurable, and easy to use web development tool that checks HTML, CSS, SEO, spelling, accessibility (including WCAG 2.0/2.1/2.2), PHP, XHTML, JavaScript, htmx, and links. CSS HTML Validator includes batch processing (in the Pro edition), integrated HTML/CSS editing, and much more. It works offline so it's super-fast and your privacy is protected because your documents are not uploaded to a server for checking. CSS HTML Validator Pro has superior customization features so you can configure the validation to your liking. You can even add your own validator messages, recognize your own HTML elements and attributes, and much more. Try CSS HTML Validator Pro for Windows free for 200 validations or 30 days, whichever comes first. A FREE limited version of htmlval for Mac and Linux is also available.	About Turn your website into an asset as it was meant to be with Siteimprove. Siteimprove is an all-in-one website management software designed to help businesses solve today's most demanding website challenges. With Siteimprove, businesses get access to tools that allow them to optimize content quality and design, boost search engine traffic, comply with data privacy requirements, and track website performance--all from a single platform.
Platforms Supported Windows Supported Mac Supported Linux Supported Cloud Not Supported On-Premises Not Supported iPhone Not Supported iPad Not Supported Android Not Supported Chromebook Not Supported	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
Audience Any person, business, or other entity with a website	Audience Marketing and communications teams
Support Phone Support Not Supported 24/7 Live Support Not Supported Online Supported	Support Phone Support Not Supported 24/7 Live Support Supported Online Supported
API Offers API Not Supported	API Offers API Not Supported
Screenshots and Videos View more images or videos	Screenshots and Videos View more images or videos
Pricing $60 (one time) CSS HTML Validator Home Edition is only $60 and the Pro Edition is $125. The Mac and Linux command line tool (htmlval) is $79 (included with Pro). FREE for online HTML & CSS validator. Free Version Supported Free Trial Supported	Pricing No information available. Free Version Not Supported Free Trial Supported
Reviews/Ratings Overall 4.8 / 5 ease 4.6 / 5 features 4.8 / 5 design 4.8 / 5 support 5.0 / 5 Read all reviews	Reviews/Ratings Overall 5.0 / 5 ease 5.0 / 5 features 5.0 / 5 design 5.0 / 5 support 5.0 / 5 Read all reviews
Pros & Cons from Real Users Pros What is just as important as high quality of a tool? A developer’s willingness to keep driving their project forward in an evolutionary way! Albert Wiersch is just such a developer. You can sense his passionate attention to detail throughout the programme, in the configuration, in the documentation and in the output. Thank you, Albert, for this brilliant work! I starting using this five years ago, and have not looked back since. It really is a one-stop shop for keeping your code free of any problems. By finding issues in your code, however minor they might seem, you can keep your code clean, and this leads to far fewer problems in the long run. Without it, minor issues aren't caught, but at some stage they accumulate and then you end up with a big mess which is much harder to sort out. Good support if you have any problems in implementation. Highly recommended. Excellent syntax checking that, in addition to locating errors, offers relevant targeted advice on correcting errors, best practices, accessibility, and SEO, making CSS HTML Validator a good tool when learning HTML, CSS, etc., and a sophisticated advisor even for an advanced practitioner. In addition to validating single HTML/CSS pages, it checks links and is able to process an entire website to generate a comprehensive analysis of all pages. The website can be local on the file system or online and accessed via a URL. The validator engine allows one to choose the level of error checking (Full, Errors only, Errors and warnings only, etc.) and enabling/disabling specific messages. The editor includes features specific to editing HTML and CSS pages. Validation includes JSON (in HTML pages) and WCAG (Web Content Accessibility Guidelines). The ASPX pages are html nightmares for the most part. By testing the runtime manifestations against this product (in other words, grab the page source and drop it into this product), I can see a number of things that need to be addressed in the source - css, poor document structure The only limitation I have run into is that I need to embed css links in the pages explicitly instead of relying on the Telerik style sheet manager to organize and provide them to the app. It would be very helpful if a set of CSS stylesheets could be automatically searched and so on. Love the way it tells you the line and the error message. Makes troubleshooting very easy. Just open your file and click validate, just that easy. Cons I found nothing of relevance. May be I overlook something. Nothing. If I had any difficulty in implementing a particular option, I contacted support and the problem was sorted. As with any product, various individuals will have various preferences, but, for myself, I am at a loss to suggest possible improvements. As one who runs Linux, the fact that CSS HTML Validator is a Windows-only application was a "con" (I ran it in a VM), but, as of Wine 9.0, all features of CSS HTML Validator perform flawlessly when installed on Linux with Wine. I am not sure why I get the starting panel offering me options on startup. Maybe it can be disabled. A bit annoying. Wish there was a lifetime price for upgrades, but am satisfied with the current pricing per version.	Pros & Cons from Real Users Pros We love everything about Siteimprove. We use it daily and it does the job of multiple people - we have a small team and it's like having another team member because it does so much. We use it to find things from broken links and misspelled words all the way to ADA compliance violations - it even gives you code examples on how to address the issues. All around amazing product! It's very easy to integrate and provides relative web analytics. It offers a complete business website management solution. It helps to improve usability. Its SEO management works fantastic. Cons It does everything we need, so absolutely zero complaints from us. Overall it's an outstanding web analytics tool.
Training Documentation Supported Webinars Not Supported Live Online Not Supported In Person Not Supported	Training Documentation Supported Webinars Supported Live Online Supported In Person Not Supported
Company Information AI Internet Solutions LLC Founded: 1997 United States www.htmlvalidator.com	Company Information Siteimprove Founded: 2003 Denmark siteimprove.com
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Categories SEO Supported Web Accessibility Testing Supported Website Optimization Tools Supported	Categories Content Management Supported Content Marketing Supported Data Governance Supported Digital Analytics Supported Digital Governance Supported Session Replay Supported Web Accessibility Testing Supported Web Analytics Supported Website Accessibility Supported Website Monitoring Supported Website Optimization Tools Supported
Web Accessibility Testing Features ADA Compliance Not Supported Alerts / Notifications Not Supported Automated Testing Not Supported Mobile Accessibility Testing Not Supported Ongoing Accessibility Monitoring Not Supported Reporting / Analytics Not Supported Visualize Accessibility Not Supported WCAG Compliance Supported Website Optimization Tools Features Competitor Analysis Not Supported Content Management Not Supported Keyword Research Tools Supported Link Management Supported Performance Metrics Not Supported Problem Area Alerts Not Supported Show More Features SEO Features A/B Testing Not Supported Artificial Intelligence (AI) Not Supported Auditing Not Supported Competitor Analysis Not Supported Content Management Not Supported Dashboard Not Supported Google Analytics Integration Not Supported Keyword Research Tools Supported Keyword Tracking Not Supported Link Management Not Supported Localization Not Supported Mobile Search Tracking Not Supported Rank Tracking Not Supported Revenue Management Not Supported User Management Not Supported	Show More Features Content Management Features Audio Content Supported Customizable Templates Supported Document Indexing Supported E-forms Supported Full Text Search Supported Image Editor Supported SEO Management Supported Text Editor Supported Version Control Not Supported Video Content Supported Website Management Supported Content Marketing Features Audience Targeting Supported Brand Management Supported Campaign Management Not Supported Categorization / Grouping Supported Conversion Tracking Supported Distribution Management Not Supported Editorial Calendar Not Supported Multi-Channel Publishing Not Supported Publish Scheduling Not Supported SEO Management Supported Social Media Management Not Supported Video Management Not Supported Data Governance Features Access Control Supported Data Discovery Supported Data Mapping Supported Data Profiling Supported Deletion Management Supported Email Management Not Supported Policy Management Supported Process Management Supported Roles Management Supported Storage Management Not Supported Web Analytics Features Campaign Management Not Supported Conversion Tracking Supported Form Analytics Not Supported Goal Tracking Supported Keyword Tracking Supported Multiple Site Management Supported Pageview Tracking Supported Referral Source Tracking Supported Site Search Tracking Supported Time on Site Tracking Supported User Interaction Tracking Supported Website Monitoring Features Availability Testing Supported Event Logs Supported Event-Based Notifications Supported FTP Monitoring Not Supported Mail Server Monitoring Not Supported Maintenance Scheduling Not Supported Performance Metrics Supported Real Time Monitoring Supported Transaction Monitoring Not Supported Uptime Reporting Supported
Integrations ACCEO Retail-1 Not Supported Cascade CMS Not Supported Cludo Not Supported Craft CMS Not Supported EmEditor Supported Enonic Not Supported Gentics Not Supported Ibexa DXP Not Supported Ingeniux Not Supported Jahia Not Supported Kontent.ai Not Supported Magnolia Not Supported Microsoft Power Query Not Supported Progress Sitefinity Not Supported Sitecore Not Supported T2M URL Shortener Not Supported WordPress Not Supported WordPress VIP Not Supported Show More Integrations View All 1 Integration	Integrations ACCEO Retail-1 Supported Cascade CMS Supported Cludo Supported Craft CMS Supported EmEditor Not Supported Enonic Supported Gentics Supported Ibexa DXP Supported Ingeniux Supported Jahia Supported Kontent.ai Supported Magnolia Supported Microsoft Power Query Supported Progress Sitefinity Supported Sitecore Supported T2M URL Shortener Supported WordPress Supported WordPress VIP Supported Show More Integrations View All 17 Integrations
Claim CSS HTML Validator and update features and information Claim CSS HTML Validator and update features and information	Claim Siteimprove and update features and information Claim Siteimprove and update features and information