When comparing is.gd vs Rebrandly, the Slant community recommends Rebrandly for most people. In the question“What are the best URL shorteners?” Rebrandly is ranked 1st while is.gd is ranked 35th. The most important reason people chose Rebrandly is:
You can change both the address and the destination URL. You can even delete your URL, a feature that is not available with most shorteners.
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Pros
Pro Links last forever
The links created by is.gd will never be deleted down the road, meaning you can continue to use them years down the road without worry.
Pro 19 characters long
Including the "https://" at the start of links, short links are typically 19 characters long (so 11 characters plus the https://).
Pro You can edit or delete your links
You can change both the address and the destination URL. You can even delete your URL, a feature that is not available with most shorteners.
Pro Branded domain registration and setup integrated with the service
Pro Bulk URL creation with Google Sheets extension
Pro UTM Parameters
Free, quick & easy, save templates you use frequently
Pro Task automation
You can integrate this service with Zapier to automate tasks around branded links for examle, getting notifications when your link hits a certain number of clicks.
Pro Great for Instagram
Rebrandly allows you to edit your links at a later date, so it's great for updating your Instagram bio. Anytime you want to change the link just edit it from your Rebrandly dashboard, and use a link that shows your followers where you're going to send them! http://rebrandly.rocks/instagram
Cons
Con No central location to see all your links
If you want to see data for your short links, you will have to visit each link individually and adding a dash (-) at the end of the link, or enabling automatic previews.