diff --git a/Gemfile b/Gemfile
index 999df40c..3f23fef6 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,7 +8,6 @@ gem 'bcrypt'
 gem 'sinatra-flash',      require: 'sinatra/flash'
 gem 'sinatra-xsendfile',  require: 'sinatra/xsendfile'
 gem 'puma', '5.6.5',      require: nil
-gem 'rmagick',            require: nil
 gem 'sidekiq', '~> 5.2.0'
 gem 'mail'
 gem 'net-smtp'
@@ -56,6 +55,7 @@ gem 'maxmind-db'
 gem 'json', '>= 2.3.0'
 gem 'nokogiri'
 gem 'rss'
+gem 'webp-ffi'
 gem 'rszr'
 
 group :development, :test do
diff --git a/Gemfile.lock b/Gemfile.lock
index d8710dd1..10fdb0d0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -225,7 +225,6 @@ GEM
       netrc (~> 0.8)
     rexml (3.2.5)
     rinku (2.0.6)
-    rmagick (5.0.0)
     rss (0.2.9)
       rexml
     rszr (1.3.0)
@@ -295,6 +294,9 @@ GEM
       addressable (>= 2.8.0)
       crack (>= 0.3.2)
       hashdiff (>= 0.4.0, < 2.0.0)
+    webp-ffi (0.3.1)
+      ffi (>= 1.9.0)
+      ffi-compiler (>= 0.1.2)
     webrick (1.7.0)
     websocket-driver (0.7.5)
       websocket-extensions (>= 0.1.0)
@@ -361,7 +363,6 @@ DEPENDENCIES
   redis-namespace
   rest-client
   rinku
-  rmagick
   rss
   rszr
   sanitize
@@ -382,6 +383,7 @@ DEPENDENCIES
   tilt
   timecop
   webmock
+  webp-ffi
   will_paginate
   xmlrpc
   zipruby
diff --git a/models/site.rb b/models/site.rb
index ae408fcc..855dc622 100644
--- a/models/site.rb
+++ b/models/site.rb
@@ -1554,7 +1554,7 @@ class Site < Sequel::Model
   end
 
   def screenshot_path(path, resolution)
-    File.join base_screenshots_path, "#{path}.#{resolution}.jpg"
+    File.join base_screenshots_path, "#{path}.#{resolution}.webp"
   end
 
   def base_screenshots_path(name=username)
@@ -1568,14 +1568,14 @@ class Site < Sequel::Model
   end
 
   def screenshot_exists?(path, resolution)
-    File.exist? File.join(base_screenshots_path, "#{path}.#{resolution}.jpg")
+    File.exist? File.join(base_screenshots_path, "#{path}.#{resolution}.webp")
   end
 
   def screenshot_url(path, resolution)
     path[0] = '' if path[0] == '/'
     out = ''
     out = 'https://neocities.org' if ENV['RACK_ENV'] == 'development'
-    out+"#{base_screenshots_url}/#{path}.#{resolution}.jpg"
+    out+"#{base_screenshots_url}/#{path}.#{resolution}.webp"
   end
 
   def base_thumbnails_path(name=username)
@@ -1584,8 +1584,7 @@ class Site < Sequel::Model
   end
 
   def thumbnail_path(path, resolution)
-    ext = File.extname(path).gsub('.', '').match(LOSSY_IMAGE_REGEX) ? 'jpg' : 'png'
-    File.join base_thumbnails_path, "#{path}.#{resolution}.#{ext}"
+    File.join base_thumbnails_path, "#{path}.#{resolution}.webp"
   end
 
   def thumbnail_exists?(path, resolution)
@@ -1598,8 +1597,7 @@ class Site < Sequel::Model
 
   def thumbnail_url(path, resolution)
     path[0] = '' if path[0] == '/'
-    ext = File.extname(path).gsub('.', '').match(LOSSY_IMAGE_REGEX) ? 'jpg' : 'png'
-    "#{THUMBNAILS_URL_ROOT}/#{sharding_dir}/#{values[:username]}/#{path}.#{resolution}.#{ext}"
+    "#{THUMBNAILS_URL_ROOT}/#{sharding_dir}/#{values[:username]}/#{path}.#{resolution}.webp"
   end
 
   def to_rss
diff --git a/tests/files/img/screenshot.png b/tests/files/img/screenshot.png
new file mode 100644
index 00000000..ba79519a
Binary files /dev/null and b/tests/files/img/screenshot.png differ
diff --git a/tests/site_file_tests.rb b/tests/site_file_tests.rb
index a52ab44b..1c9b7547 100644
--- a/tests/site_file_tests.rb
+++ b/tests/site_file_tests.rb
@@ -446,7 +446,7 @@ describe 'site_files' do
       Site::THUMBNAIL_RESOLUTIONS.each do |resolution|
         _(File.exists?(@site.thumbnail_path('derpie/derptest/test.jpg', resolution))).must_equal true
         _(@site.thumbnail_url('derpie/derptest/test.jpg', resolution)).must_equal(
-          File.join "#{Site::THUMBNAILS_URL_ROOT}", Site.sharding_dir(@site.username), @site.username, "/derpie/derptest/test.jpg.#{resolution}.jpg"
+          File.join "#{Site::THUMBNAILS_URL_ROOT}", Site.sharding_dir(@site.username), @site.username, "/derpie/derptest/test.jpg.#{resolution}.webp"
         )
       end
     end
diff --git a/tests/workers/screenshot_worker_tests.rb b/tests/workers/screenshot_worker_tests.rb
index b0259070..713cc717 100644
--- a/tests/workers/screenshot_worker_tests.rb
+++ b/tests/workers/screenshot_worker_tests.rb
@@ -14,14 +14,14 @@ describe ScreenshotWorker do
 
       stub_request(:get, "#{base_host}/?url=#{site.uri}/#{path}&wait_time=#{ScreenshotWorker::PAGE_WAIT_TIME}").
         with(basic_auth: [uri.user, uri.password]).
-        to_return(status: 200, headers: {}, body: File.read('tests/files/img/test.jpg'))
+        to_return(status: 200, headers: {}, body: File.read('tests/files/img/screenshot.png'))
 
       ScreenshotWorker.new.perform site.username, path
 
       Site::SCREENSHOT_RESOLUTIONS.each do |r|
-        _(File.exists?(File.join(Site::SCREENSHOTS_ROOT, Site.sharding_dir(site.username), site.username, "#{path}.#{r}.jpg"))).must_equal true
+        _(File.exists?(File.join(Site::SCREENSHOTS_ROOT, Site.sharding_dir(site.username), site.username, "#{path}.#{r}.webp"))).must_equal true
         _(site.screenshot_url(path, r)).must_equal(
-          File.join(Site::SCREENSHOTS_URL_ROOT, Site.sharding_dir(site.username), site.username, "#{path}.#{r}.jpg")
+          File.join(Site::SCREENSHOTS_URL_ROOT, Site.sharding_dir(site.username), site.username, "#{path}.#{r}.webp")
         )
       end
     end
diff --git a/workers/screenshot_worker.rb b/workers/screenshot_worker.rb
index d2433c27..880d3aef 100644
--- a/workers/screenshot_worker.rb
+++ b/workers/screenshot_worker.rb
@@ -1,4 +1,3 @@
-require 'rmagick'
 require 'securerandom'
 require 'open3'
 
@@ -10,7 +9,6 @@ class ScreenshotWorker
   sidekiq_options queue: :screenshots, retry: 2, backtrace: true
 
   def perform(username, path)
-
     site = Site[username: username]
     return if site.nil? || site.is_deleted
 
@@ -37,14 +35,6 @@ class ScreenshotWorker
     path = "/#{path}" unless path[0] == '/'
 
     path_for_screenshot = path
-    
-    if path.match(Site::HTML_REGEX)
-      path = path.match(/(.+)#{Site::HTML_REGEX}/).captures.first
-    end
-   
-    if path.match(/(.+)index?/)
-      path = path.match(/(.+)index?/).captures.first
-    end
 
     uri = Addressable::URI.parse $config['screenshot_urls'].sample
     api_user, api_password = uri.user, uri.password
@@ -54,37 +44,30 @@ class ScreenshotWorker
     )
 
     begin
-      base_image_tmpfile_path = "/tmp/#{SecureRandom.uuid}.jpg"
+      base_image_tmpfile_path = "/tmp/#{SecureRandom.uuid}.png"
       File.write base_image_tmpfile_path, HTTP.basic_auth(user: api_user, pass: api_password).get(uri).to_s
-      image = Rszr::Image.load base_image_tmpfile_path
 
       user_screenshots_path = File.join SCREENSHOTS_PATH, Site.sharding_dir(username), username
       screenshot_path = File.join user_screenshots_path, File.dirname(path_for_screenshot)
-
       FileUtils.mkdir_p screenshot_path unless Dir.exist?(screenshot_path)
 
       Site::SCREENSHOT_RESOLUTIONS.each do |res|
         width, height = res.split('x').collect {|r| r.to_i}
 
+        full_screenshot_path = File.join(user_screenshots_path, "#{path_for_screenshot}.#{res}.webp")
+
+        opts = {quality: 90, resize_w: width, resize_h: height}
+
         if width == height
-          new_img = image.resize(width, height, crop: :n)
-        else
-          new_img = image.resize width, height
+          opts.merge! crop_x: 160, crop_y: 0, crop_w: 960, crop_h: 960
         end
 
-        full_screenshot_path = File.join(user_screenshots_path, "#{path_for_screenshot}.#{res}.jpg")
-        tmpfile_path = "/tmp/#{SecureRandom.uuid}.jpg"
-
-        begin
-          new_img.save tmpfile_path, quality: 92
-          $image_optim.optimize_image! tmpfile_path
-          File.open(full_screenshot_path, 'wb') {|file| file.write File.read(tmpfile_path)}
-        ensure
-          FileUtils.rm tmpfile_path
-        end
+        WebP.encode base_image_tmpfile_path, full_screenshot_path, opts
       end
 
       true
+    rescue => e
+      raise e
     ensure
       FileUtils.rm base_image_tmpfile_path
     end
diff --git a/workers/thumbnail_worker.rb b/workers/thumbnail_worker.rb
index 1aa311a1..1436a4c9 100644
--- a/workers/thumbnail_worker.rb
+++ b/workers/thumbnail_worker.rb
@@ -1,8 +1,6 @@
-require 'rmagick'
-
 class ThumbnailWorker
   THUMBNAILS_PATH = Site::THUMBNAILS_ROOT
-  MAXIMUM_IMAGE_SIZE = 2_000_000 # 2MB
+  MAXIMUM_IMAGE_SIZE = 10_000_000 # 10MB
 
   include Sidekiq::Worker
   sidekiq_options queue: :thumbnails, retry: 3, backtrace: true
@@ -14,43 +12,33 @@ class ThumbnailWorker
     site_file_path = site.files_path(path)
     return unless File.exist?(site_file_path)
 
-    # Large images jam up ImageMagick and eat a ton of memory, so we skip for now.
+    # Large images can eat a ton of memory, so we skip for now.
     return if File.size(site_file_path) > MAXIMUM_IMAGE_SIZE
 
-    img_list = Magick::ImageList.new
-
-    begin
-      img_list.from_blob File.read(site_file_path)
-    rescue Errno::ENOENT => e # Not found, skip
-      return
-    rescue Magick::ImageMagickError => e
-      GC.start full_mark: true, immediate_sweep: true
-      puts "thumbnail fail: #{site_file_path} #{e.inspect}"
-      return
-    end
-
-    img = img_list.first
-
     user_thumbnails_path = site.base_thumbnails_path
     FileUtils.mkdir_p user_thumbnails_path
     FileUtils.mkdir_p File.join(user_thumbnails_path, File.dirname(path))
 
     Site::THUMBNAIL_RESOLUTIONS.each do |res|
-      resimg = img.resize_to_fit(*res.split('x').collect {|r| r.to_i})
+      width, height = res.split('x').collect {|r| r.to_i}
       format = File.extname(path).gsub('.', '')
+      full_thumbnail_path = File.join(user_thumbnails_path, "#{path}.#{res}.webp")
 
-      save_ext = format.match(Site::LOSSY_IMAGE_REGEX) ? 'jpg' : 'png'
+      image = Rszr::Image.load site_file_path
+      if image.width > image.height
+        image.resize! width, :auto
+      else
+        image.resize! :auto, height
+      end
 
-      full_thumbnail_path = File.join(user_thumbnails_path, "#{path}.#{res}.#{save_ext}")
+      begin
+        tmpfile = "/tmp/#{SecureRandom.uuid}.png"
+        image.save(tmpfile)
 
-      resimg.write(full_thumbnail_path) { |i|
-        i.quality = 75
-      }
-      resimg.destroy!
-      #$image_optim.optimize_image! full_thumbnail_path
+        WebP.encode tmpfile, full_thumbnail_path, quality: 70
+      ensure
+        FileUtils.rm tmpfile
+      end
     end
-
-    img.destroy!
-    GC.start full_mark: true, immediate_sweep: true
   end
 end