diff --git a/.travis.yml b/.travis.yml
index b9f284d..90b22f3 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,5 +1,5 @@
 sudo: required
-dist: xenial
+dist: bionic
 
 language: bash
 
@@ -17,8 +17,8 @@ addons:
 
 script:
   - sudo apt-get install jpegoptim -y
-  - sudo bash install-webp.sh
-  - sudo bash install-optipng.sh
+  - sudo bash scripts/install-webp.sh
+  - sudo bash scripts/install-optipng.sh
   - sudo cp optimize.sh /usr/local/bin/img-optimize
   - sudo chmod 755 /usr/local/bin/img-optimize
   - /usr/local/bin/img-optimize --all
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 870c522..f929de8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,6 +10,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 
 - quiet mode
 - option --no-run-if-empty added to xargs
+- scripts to compile optipng & libwebp from source
 
 ### Changed
 
diff --git a/README.md b/README.md
index 2ee70cb..4e2b784 100644
--- a/README.md
+++ b/README.md
@@ -10,6 +10,8 @@
 - optipng for png optimization
 - cwebp for WebP conversion
 
+### From APT repositories
+
 Debian/Ubuntu :
 
 ```bash
@@ -22,6 +24,18 @@ Centos 7 :
 sudo yum install optipng jpegoptim libwebp-tools -y
 ```
 
+### Compile the latest release (optipng & libwebp)
+
+For Debian/Ubuntu (available in scripts folder) :
+
+```bash
+# optipng
+curl -sL git.io/fjd0v | sudo -E bash
+
+# libwebp
+curl -sL git.io/fjd0v | sudo -E bash
+```
+
 --------------------------------------------------------------------------------
 
 ## Installation
@@ -43,12 +57,13 @@ echo "alias img-optimize=$HOME/.img-optimize/optimize.sh" >> $HOME/.bashrc
 source $HOME/.bashrc
 ```
 
-**Method 2** : Copy the script in /usr/local/bin
+**Method 2** : Add an alias to the script in /usr/local/bin
 
 With this method img-optimize can be used by all users
 
 ```bash
-sudo cp $HOME/.img-optimize/optimize.sh /usr/local/bin/img-optimize
+sudo ln -s $HOME/.img-optimize/optimize.sh /usr/local/bin/img-optimize
+sudo chmod +x /usr/local/bin/img-optimize
 ```
 
 ## Usage
@@ -80,15 +95,9 @@ To update the script, just run :
 git -C $HOME/.img-optimize pull
 ```
 
-If you previously used the 2nd install method, you have to copy the script again to update it
-
-```bash
-sudo cp $HOME/.img-optimize/optimize.sh /usr/local/bin/img-optimize -f
-```
-
 ## Setup daily cronjob
 
-You copy the scripts to /etc/cron.daily :
+You just have to copy the scripts to /etc/cron.daily :
 
 ```bash
 cp $HOME/.img-optimize/crons/jpg-png-cron.sh /etc/cron.daily/jpg-png-cron
diff --git a/install-optipng.sh b/install-optipng.sh
deleted file mode 100644
index 4bb3023..0000000
--- a/install-optipng.sh
+++ /dev/null
@@ -1,22 +0,0 @@
-#!/bin/bash
-
-# install prerequisites
-apt-get install build-essential libpng-dev zlib1g-dev curl pigz -y
-
-# go into /usr/local/src and remove previous optipng folder/archive
-cd /usr/local/src || exit 1
-rm -rf optipng*
-
-# get the latest optipng release link
-OPTIPNGLATEST=$(curl -sL optipng.sourceforge.net | grep tar.gz | awk -F '["]' '{print $4}')
-
-# download and extract optipng
-wget $OPTIPNGLATEST -O optipng.tar.gz
-tar -I pigz -xf optipng.tar.gz
-cd optipng-* || exit 1
-
-# configure and compile optipng
-./configure --prefix=/usr
-make -j "$(nproc)"
-strip --strip-unneeded /usr/local/src/optipng-*/src/optipng/optipng
-make install
\ No newline at end of file
diff --git a/install-webp.sh b/install-webp.sh
deleted file mode 100644
index aa6401e..0000000
--- a/install-webp.sh
+++ /dev/null
@@ -1,19 +0,0 @@
-#!/bin/bash
-
-# install prerequisites
-apt-get install build-essential libjpeg-dev libpng-dev libtiff-dev libgif-dev libwebp-dev tar gzip wget -y
-
-# go into /usr/local/src and remove previous libwebp folder/archive
-cd /usr/local/src || exit
-rm -rf libwebp*
-
-# download and extract latest libwebp sources
-wget https://storage.googleapis.com/downloads.webmproject.org/releases/webp/libwebp-1.0.2.tar.gz -O libwebp.tar.gz
-tar xzf libwebp.tar.gz
-cd libwebp-* || exit
-
-# configure libwebp and launch compilation
-./configure --prefix=/usr
-make -j "$(nproc)"
-strip --strip-unneeded /usr/local/src/libwebp-*/examples/.libs/{cwebp,dwebp}
-make install
diff --git a/scripts/install-optipng.sh b/scripts/install-optipng.sh
new file mode 100644
index 0000000..be8d60f
--- /dev/null
+++ b/scripts/install-optipng.sh
@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+#----------------------------------------------------------------------------
+#  img-optimize-  optipng compilation script
+#----------------------------------------------------------------------------
+# Website:       https://virtubox.net
+# GitHub:        https://github.com/VirtuBox/img-optimize
+# Author:        VirtuBox
+# License:       M.I.T
+# ----------------------------------------------------------------------------
+
+# install prerequisites
+export DEBIAN_FRONTEND=noninteractive
+apt update && apt-get install --assume-yes build-essential libpng-dev zlib1g-dev curl pigz jpegoptim
+
+# get the latest optipng release link
+OPTIPNGLATEST=$(curl -sL optipng.sourceforge.net | grep tar.gz | awk -F '["]' '{print $4}')
+
+# go into /usr/local/src and remove previous optipng folder/archive
+cd /usr/local/src || exit 1
+rm -rf optipng*
+
+# download and extract optipng
+curl -sL "$OPTIPNGLATEST" | tar -I pigz -xf -
+cd optipng-* || exit 1
+
+# configure and compile optipng
+./configure --prefix=/usr
+make -j "$(nproc)"
+strip --strip-unneeded /usr/local/src/optipng-*/src/optipng/optipng
+make install
\ No newline at end of file
diff --git a/scripts/install-webp.sh b/scripts/install-webp.sh
new file mode 100644
index 0000000..e4eee37
--- /dev/null
+++ b/scripts/install-webp.sh
@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+#----------------------------------------------------------------------------
+#  img-optimize-  libwebp compilation script
+#----------------------------------------------------------------------------
+# Website:       https://virtubox.net
+# GitHub:        https://github.com/VirtuBox/img-optimize
+# Author:        VirtuBox
+# License:       M.I.T
+# ----------------------------------------------------------------------------
+
+# install prerequisites
+export DEBIAN_FRONTEND=noninteractive
+apt-get update && apt-get install --assume-yes build-essential libjpeg-dev libpng-dev libtiff-dev libgif-dev libwebp-dev tar pigz curl
+
+# get the latest release number
+LATEST_WEBP=$(curl https://storage.googleapis.com/downloads.webmproject.org/releases/webp/index.html 2>&1 | grep ".tar.gz\"" | awk -F '["]' '{print $2}' | sort -r | head -n 1 2>&1)
+
+# go into /usr/local/src and remove previous libwebp folder/archive
+cd /usr/local/src || exit
+rm -rf libwebp*
+
+# download and extract latest libwebp sources
+curl -sL "https:$LATEST_WEBP" | tar -I pigz -xf -
+cd libwebp-* || exit
+
+# configure libwebp and launch compilation
+./configure --prefix=/usr
+make -j "$(nproc)"
+strip --strip-unneeded /usr/local/src/libwebp-*/examples/.libs/{cwebp,dwebp}
+make install