Compare Changes on a Web Page Side-by-side Like a Wiki

Most wikis maintain revision history for every web page in the system so you can easily visually compare changes between any two versions of the same page side-by-side. For instance, this colored edit log from Wikipedia shows how the page for Bush changed the day Obama was sworn in office.

web page comparison

Now if you like to have a similar change log for regular web pages as well so that you know exactly what text has been added, removed or where the edits happened since you last visited the site, check out Versionista.

Versionista is both a web page monitor and visual comparison tool. You supply a list of web addresses (or URLs) that you want to track with Versionista and it will send you an email alert as soon as the site owner edits something on the page.

What I like most about Versionista is the way it highlights changes in a web page (see example)- all the edits are color coded and both versions of the page are timestamped and placed side-by-side so you can quickly compare the old content with the new.

This can also be a great companion for tracking changes in legal documents, where every word matters, like the terms of use or privacy policy of some organization. The free version of Versionista will track up to 4 different versions of the same page and you can monitor a maximum of 5 web pages.

Other services that can help you monitor web pages include Google Docs, Change Detection, Watch That Page or Page2RSS - the latter helps you track changes on a page via feeds itself and is good for ego surfing through Google search.

Amit Agarwal

Amit Agarwal

Google Developer Expert, Google Cloud Champion

Amit Agarwal is a Google Developer Expert in Google Workspace and Google Apps Script. He holds an engineering degree in Computer Science (I.I.T.) and is the first professional blogger in India.

Amit has developed several popular Google add-ons including Mail Merge for Gmail and Document Studio. Read more on Lifehacker and YourStory

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Awards & Titles

Digital Inspiration has won several awards since it's launch in 2004.

Google Developer Expert

Google Developer Expert

Google awarded us the Google Developer Expert award recogizing our work in Google Workspace.

ProductHunt Golden Kitty

ProductHunt Golden Kitty

Our Gmail tool won the Lifehack of the Year award at ProductHunt Golden Kitty Awards in 2017.

Microsoft MVP Alumni

Microsoft MVP Alumni

Microsoft awarded us the Most Valuable Professional (MVP) title for 5 years in a row.

Google Cloud Champion

Google Cloud Champion

Google awarded us the Champion Innovator title recognizing our technical skill and expertise.

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