Keller is a
browser extension publisher,
most of their extensions are
productivity extension and
fun extension and
photos extension and
developer tools extension.
February 9th, 2022
Test your vision (visual acuity) via Tumbling E chart in your browser!
July 19th, 2022
Allow the right-click menu for all elements with a restriction!
February 14th, 2022
An easy-to-use and lite Magic Squares game
March 10th, 2022
A lite, free & flexible Markdown editor app for your browser.
August 16th, 2021
Create animated GIFs from existing video file(s) or images!
March 1st, 2023
Generate QR code from any text and save it as an SVG image
November 7th, 2022
Defending against WebGL fingerprinting by reporting a fake value.
March 8th, 2022
An easy to use speech synthesis and recognition tool for your browser!
November 10th, 2022
Defending against Font fingerprinting by reporting a fake value.
September 19th, 2022
Save a page content & incorporate all resources (i.e. images) in a single file!
December 19th, 2021
Listen to more than 20K free radio stations around the world!
May 30th, 2022
Open a blank dark or white tab rather than the default browser's new tab page.
A lite, free & flexible LaTeX editor app for your browser.
March 14th, 2023
Easily adjust various sound settings (volume, balance, etc.) via toolbar popup.
October 31st, 2021
Useful information about your system's connection including, type, speed, and rtt.
A free & easy-to-use word editor extension for your browser.
December 26th, 2022
Make any webpage into a content editable document and modify it via toolbar popup!
February 2nd, 2022
Easily vectorize an image (convert to SVG) in your browser!
June 7th, 2022
Disable window.eval() in all websites and improve your online security!
You could send emails to publisher.