Just did a search on an old image that I got from the web, and it came back with ZERO RESULTS!!!! Not possible methinks....

不错不错，一直使用这个软件。

Simple and effective screenshot tool.

After 50 searches you have to pay. How funny!

I like the way it finds images

Works perfectly, almost always finds the image.

This is amazing. It works fast with very few problems. I always wanted something like this for private use.

This is the only image search that actually works!!!

There is a new sheriff in town: https://addons.mozilla.org/sl/firefox/addon/search_by_image/.

Helpful info.. (I've been here before because of nonworking TFSC) and my old eyes need help, like a lot of peeps showing up here :)
First, I only use PC Waterfox 64bit 54ver. and I use Thunderbird 32bit 52ver. I have ALL my addon's turned off and not to update including WF and TB. I realize now, That Firefox and Thunderbird will never add some helpful font adjustments for our bad eyes :(
So,...
If you read through the reviews. You'll see some info reviews on how to download and install a non expiring version of TFSC on earlier version of FF, Waterfox, TB. I only wanted to help people because I feel their pain on not being able to see and need help and remember to turn off all updates that includes FF, TB, WF. . I still want to give props to the Author of TFSC. Thx you!

TinEye has pretty much always been junk. Google, Yandex, and Bing are a million times better. Tin can't find the picture lying on the floor in front of it.

Used to work but now finds ZERO results. I even tested images that I've uploaded to several sites and it did not find a single one of them. So decided to try Google search. It doesn't work either! What is going on with these reverse image search engines?

Good.

This extension is just useless. I've got "0 results" for any image I tested.