What does Lstu mean?

It means Let's Shorten That Url.


Lstu is licensed under the terms of the WTFPL. See the LICENSE file.


  • Carton : Perl dependencies manager, it will get what you need, so don't bother about dependencies (but you can read the file cpanfile if you want).
sudo cpan Carton


After installing Carton :

git clone
cd lstu
make installdeps
cp lstu.conf.template lstu.conf
vi lstu.conf

The configuration file is self-documented.


cd /your/lstu/installation/directory
git pull
make installdeps
vimdiff lstu.conf.template lstu.conf

Then reload the service manually (see below) or with your init system (service lstu reload).


Launch manually

This is good for test, not for production.

# start it
carton exec hypnotoad script/lstu
# reload it while running (yep, same command)
carton exec hypnotoad script/lstu
# stop it
carton exec hypnotoad -s script/lstu

Yup, that's all, it will listen at "".

For more options (interfaces, user, etc.), change the configuration in lstu.conf (have a look at for the available options).


sudo su
cp utilities/lstu.service /etc/systemd/system/
vi /etc/systemd/system/lstu.service
systemctl daemon-reload
systemctl enable lstu.service
systemctl start lstu.service


sudo su
cp utilities/lstu.default /etc/default/lstu
vi /etc/default/lstu
cp utilities/lstu.init /etc/init.d/lstu
update-rc.d lstu defaults
service lstu start

Other options

There is the contact option (mandatory), where you have to put some way for the users to contact you, and the secret where you have to put a random string in order to protect your Mojolicious cookies (not really useful and optional).

Please, have a look at the lstu.conf.template, it's full of options and is self-documented.

Heavily used instances

If your instance of Lstu is heavily used, you should take a look at the minion option: instead of updating the URL's counter right after a visit, this update is enqueued in Minion.

After enabling the use of Minion in lstu.conf, you'll need to start the queue processing daemon. You can start it manually with make minion, but it's better to start it as a service.

Unfortunately for SysVinit users, I only created a systemd service file:

sudo su
cp utilities/lstu-minion@.service /etc/systemd/system/
vi /etc/systemd/system/lstu-minion@.service
systemctl daemon-reload
systemctl enable lstu-minion@1.service
systemctl start lstu-minion@1.service

You can see that this is a template unit file: you can start more than one minion worker with the same unit file. You only need to enable it with an other name (lstu-minion@1.service, lstu-minion@2.service, etc.).

The more minion worker you will start, the quicker the job queue will be processed. But be careful! As Lstu uses a SQLite database, too much workers will only lead to failures due to an already locked database.

Start with one worker, and add one if it's not enough to process the queue quick enough.

How many URLs can it handle ?

By default, there are 8 361 453 672 available combinations. I think the sqlite db will explode before you reach this limit. If you want more shortened URLs than that, open lstu.conf and change the length setting.

Every time somebody uses Lstu, it will create 'waiting' shortened URLs codes in order to be quick to shorten the URLs.

Accordingly to the lstu.conf configuration file, it will create provisioning waiting URLs, adding them provis_step by provis_step.

This provisioning asks to modify your database if you're updating Lstu from 0.01 to 0.02:

sqlite3 lstu.db
PRAGMA writable_schema = 1;
PRAGMA writable_schema = 0;

Reverse proxy

For Nginx, use utilities/lstu.nginx as a template for your virtualhost configuration.

For Apache, use utilities/lstu.apache as a template for your virtualhost configuration. Please note that this Apache template comes from the community and that there is no official support for Apache.


Lstu comes with English, French and Occitan languages. It will choose the language to display with the browser's settings.

If you want to add more languages, please help on

There are just a few sentences, so it will be quick to translate.

If you add sentences to translate, just do make locales to update the po files.

Official instance

You can see it working and use it at




See the contributing guidelines.

Create new theme

Go to your Lstu directory and do:

carton exec ./script/lstu theme name_of_your_new_theme

It will create a skeleton in themes directory.

If you create a file with the same name and path as one in the default theme, it will prevail. If you create a new file, it will be available.

If you want to translate strings from your theme (<% l('To translate') %>), go to your theme directory and do:

make locales

Then use the files in your theme's lib/I18N to translate your strings.

Other projects dependencies

Lstu is written in Perl with the Mojolicious framework and uses the Twitter bootstrap framework to look not too ugly.


See the file.