reblogchecker

Reblog Checker

A handy tool for Tumblr users to check whether a given post is currently in their blog or not.
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Usage

Reblog Checker will scan all of your posts and save their root IDs for as long as you keep the tab open. When you feed it the link to the Tumblr post you're not sure has been reblogged before, Reblog Checker will extract its root ID and look into your posts's saved root IDs for a match. In case there is a match, Reblog Checker will provide you with the link to your reblog.

1. In step one, provide the username of the blog you want to search and wait until all of your posts are processed.
2. In step two, provide the link to the post you want to check, then click the "Check!" button. Make sure that the link is in a valid format (e.g. https://username.tumblr.com/post/123456789101112 or https://www.tumblr.com/username/123456789101112).

Screenshots

Disclaimer

This application is an unofficial initiative, not endorsed or otherwise supported by Tumblr, Inc. and developed in compliance with the Tumblr Application Developer and API License Agreement, meant to function as a minor extension for the personal use and benefit of Tumblr users. Whatever data is requested from the Tumblr Application Programming Interface is collected for the sole purpose of feeding the necessary information to the application.