121 lines
3.7 KiB
Markdown
121 lines
3.7 KiB
Markdown
# Image optimization bash script
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[](https://travis-ci.org/VirtuBox/img-optimize)    
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## Prerequisite
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- jpegoptim for jpg optimization
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- optipng for png optimization
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- cwebp for WebP conversion
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### From APT repositories
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Debian/Ubuntu :
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```bash
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sudo apt install jpegoptim optipng webp -y
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```
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Centos 7 :
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```bash
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sudo yum install optipng jpegoptim libwebp-tools -y
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```
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### Compile the latest release (optipng & libwebp)
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For Debian/Ubuntu (available in scripts folder) :
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```bash
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# optipng
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curl -sL git.io/fjddn | sudo -E bash
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# libwebp
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curl -sL git.io/fjdd6 | sudo -E bash
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```
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--------------------------------------------------------------------------------
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## Installation
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1) Clone the repository
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```bash
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git clone https://github.com/VirtuBox/img-optimize.git $HOME/.img-optimize
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```
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2) Install the script
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**Method 1** : Add an alias in .bashrc
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With this method img-optimize can only be used by the current user
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```bash
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echo "alias img-optimize=$HOME/.img-optimize/optimize.sh" >> $HOME/.bashrc
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source $HOME/.bashrc
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```
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**Method 2** : Add an alias to the script in /usr/local/bin
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With this method img-optimize can be used by all users
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```bash
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sudo ln -s $HOME/.img-optimize/optimize.sh /usr/local/bin/img-optimize
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sudo chmod +x /usr/local/bin/img-optimize
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```
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## Usage
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```bash
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Bash script to optimize your images and convert them in WebP
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Usage: img-optimize [options] <images path>
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If images path isn't defined, img-optimize will use the current directory
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Options:
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--jpg <images path> ..... optimize all jpg images
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--png <images path> ..... optimize all png images
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--webp <images path> ..... convert all images in webp
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--nowebp <images path> ..... optimize all png & jpg images
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--all <images path> ..... optimize all images (png + jpg + webp)
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-i, --interactive ..... run img-optimize in interactive mode
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-q, --quiet ..... run image optimization quietly
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Other options :
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-h, --help, help ... displays this help information
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Examples:
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optimize all jpg images in /var/www/images
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img-optimize --jpg /var/www/images
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```
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## Update the script
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To update the script, just run :
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```bash
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git -C $HOME/.img-optimize pull
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```
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## Setup daily cronjob
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You just have to copy the scripts to /etc/cron.daily :
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```bash
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cp $HOME/.img-optimize/crons/jpg-png-cron.sh /etc/cron.daily/jpg-png-cron
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cp $HOME/.img-optimize/crons/jpg-png-cron.sh /etc/cron.daily/webp-cron
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chmod +x /etc/cron.daily/jpg-png-cron
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chmod +x /etc/cron.daily/webp-cron
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```
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Then just edit your websites path set with the variables `sites` at the beginning of the cron scripts.
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## Warning
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Conversion process can take a while, you can use `tmux` to launch the script and be able to close your ssh connection without interrupting conversion. Then just use `tmux attach` to login back in your tmux session.
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## Credits
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- WebP conversion script was inspired by this [DigitalOcean Community Tutorial](https://www.digitalocean.com/community/tutorials/how-to-create-and-serve-webp-images-to-speed-up-your-website)
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- Tutorial about webp conversion available on [jesuisadmin.fr](https://jesuisadmin.fr/convertir-vos-images-en-webp-nginx/) (in french)
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