diff --git a/rest-api/db/migrations/20240719071602_main_tables.sql b/rest-api/db/migrations/20240719071602_main_tables.sql
index 987297c..3d45994 100644
--- a/rest-api/db/migrations/20240719071602_main_tables.sql
+++ b/rest-api/db/migrations/20240719071602_main_tables.sql
@@ -24,9 +24,9 @@ CREATE TABLE internal.website (
   id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
   owner_id UUID REFERENCES internal.user(id) ON DELETE CASCADE NOT NULL DEFAULT (current_setting('request.jwt.claims', true)::JSON->>'user_id')::UUID,
   content_type VARCHAR(10) CHECK (content_type IN ('Blog', 'Docs')) NOT NULL,
-  title VARCHAR(50) NOT NULL,
+  title VARCHAR(50) NOT NULL CHECK (trim(title) <> ''),
   created_at TIMESTAMPTZ NOT NULL DEFAULT CLOCK_TIMESTAMP(),
-  last_modified_at TIMESTAMPTZ,
+  last_modified_at TIMESTAMPTZ NOT NULL DEFAULT CLOCK_TIMESTAMP(),
   last_modified_by UUID REFERENCES internal.user(id) ON DELETE SET NULL
 );
 
@@ -44,44 +44,48 @@ CREATE TABLE internal.settings (
   accent_color_light_theme CHAR(7) CHECK (accent_color_light_theme ~ '^#[a-fA-F0-9]{6}$') NOT NULL DEFAULT '#a5d8ff',
   accent_color_dark_theme CHAR(7) CHECK (accent_color_dark_theme ~ '^#[a-fA-F0-9]{6}$') NOT NULL DEFAULT '#114678',
   favicon_image UUID REFERENCES internal.media(id) ON DELETE SET NULL,
-  last_modified_at TIMESTAMPTZ,
+  last_modified_at TIMESTAMPTZ NOT NULL DEFAULT CLOCK_TIMESTAMP(),
   last_modified_by UUID REFERENCES internal.user(id) ON DELETE SET NULL
 );
 
 CREATE TABLE internal.header (
   website_id UUID PRIMARY KEY REFERENCES internal.website(id) ON DELETE CASCADE,
   logo_type TEXT CHECK (logo_type IN ('text', 'image')) NOT NULL DEFAULT 'text',
-  logo_text VARCHAR(255),
+  logo_text VARCHAR(50),
   logo_image UUID REFERENCES internal.media(id) ON DELETE SET NULL,
-  last_modified_at TIMESTAMPTZ,
-  last_modified_by UUID REFERENCES internal.user(id) ON DELETE SET NULL
+  last_modified_at TIMESTAMPTZ NOT NULL DEFAULT CLOCK_TIMESTAMP(),
+  last_modified_by UUID REFERENCES internal.user(id) ON DELETE SET NULL,
+  CONSTRAINT logo_content_check CHECK (
+    (logo_type = 'text' AND logo_text IS NOT NULL AND trim(logo_text) <> '') OR
+    (logo_type = 'image' AND logo_image IS NOT NULL)
+  )
 );
 
 CREATE TABLE internal.home (
   website_id UUID PRIMARY KEY REFERENCES internal.website(id) ON DELETE CASCADE,
-  main_content TEXT,
-  last_modified_at TIMESTAMPTZ,
+  main_content TEXT NOT NULL CHECK (trim(main_content) <> ''),
+  last_modified_at TIMESTAMPTZ NOT NULL DEFAULT CLOCK_TIMESTAMP(),
   last_modified_by UUID REFERENCES internal.user(id) ON DELETE SET NULL
 );
 
 CREATE TABLE internal.article (
   id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
   website_id UUID REFERENCES internal.website(id) ON DELETE CASCADE NOT NULL,
-  title VARCHAR(255) NOT NULL,
-  meta_description VARCHAR(500),
-  meta_author VARCHAR(255),
+  title VARCHAR(100) NOT NULL CHECK (trim(title) <> ''),
+  meta_description VARCHAR(250) NOT NULL CHECK (trim(meta_description) <> ''),
+  meta_author VARCHAR(100) NOT NULL CHECK (trim(meta_author) <> ''),
   cover_image UUID REFERENCES internal.media(id) ON DELETE SET NULL,
   publication_date DATE NOT NULL DEFAULT CURRENT_DATE,
-  main_content TEXT,
+  main_content TEXT NOT NULL CHECK (trim(main_content) <> ''),
   created_at TIMESTAMPTZ NOT NULL DEFAULT CLOCK_TIMESTAMP(),
-  last_modified_at TIMESTAMPTZ,
+  last_modified_at TIMESTAMPTZ NOT NULL DEFAULT CLOCK_TIMESTAMP(),
   last_modified_by UUID REFERENCES internal.user(id) ON DELETE SET NULL
 );
 
 CREATE TABLE internal.footer (
   website_id UUID PRIMARY KEY REFERENCES internal.website(id) ON DELETE CASCADE,
-  additional_text VARCHAR(255),
-  last_modified_at TIMESTAMPTZ,
+  additional_text VARCHAR(250) NOT NULL CHECK (trim(additional_text) <> ''),
+  last_modified_at TIMESTAMPTZ NOT NULL DEFAULT CLOCK_TIMESTAMP(),
   last_modified_by UUID REFERENCES internal.user(id) ON DELETE SET NULL
 );
 
@@ -90,7 +94,7 @@ CREATE TABLE internal.collab (
   user_id UUID REFERENCES internal.user(id) ON DELETE CASCADE,
   permission_level INTEGER CHECK (permission_level IN (10, 20, 30)) NOT NULL DEFAULT 10,
   added_at TIMESTAMPTZ NOT NULL DEFAULT CLOCK_TIMESTAMP(),
-  last_modified_at TIMESTAMPTZ,
+  last_modified_at TIMESTAMPTZ NOT NULL DEFAULT CLOCK_TIMESTAMP(),
   last_modified_by UUID REFERENCES internal.user(id) ON DELETE SET NULL,
   PRIMARY KEY (website_id, user_id)
 );
diff --git a/rest-api/db/migrations/20240805132306_last_modified_triggers.sql b/rest-api/db/migrations/20240805132306_last_modified_triggers.sql
new file mode 100644
index 0000000..98a1cea
--- /dev/null
+++ b/rest-api/db/migrations/20240805132306_last_modified_triggers.sql
@@ -0,0 +1,55 @@
+-- migrate:up
+CREATE FUNCTION update_last_modified()
+RETURNS TRIGGER AS $$
+BEGIN
+  NEW.last_modified_at = CLOCK_TIMESTAMP();
+  NEW.last_modified_by = (current_setting('request.jwt.claims', true)::JSON->>'user_id')::UUID;
+  RETURN NEW;
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE TRIGGER update_website_last_modified
+BEFORE UPDATE ON internal.website
+FOR EACH ROW
+EXECUTE FUNCTION update_last_modified();
+
+CREATE TRIGGER update_settings_last_modified
+BEFORE UPDATE ON internal.settings
+FOR EACH ROW
+EXECUTE FUNCTION update_last_modified();
+
+CREATE TRIGGER update_header_last_modified
+BEFORE UPDATE ON internal.header
+FOR EACH ROW
+EXECUTE FUNCTION update_last_modified();
+
+CREATE TRIGGER update_home_last_modified
+BEFORE UPDATE ON internal.home
+FOR EACH ROW
+EXECUTE FUNCTION update_last_modified();
+
+CREATE TRIGGER update_article_last_modified
+BEFORE UPDATE ON internal.article
+FOR EACH ROW
+EXECUTE FUNCTION update_last_modified();
+
+CREATE TRIGGER update_footer_last_modified
+BEFORE UPDATE ON internal.footer
+FOR EACH ROW
+EXECUTE FUNCTION update_last_modified();
+
+CREATE TRIGGER update_collab_last_modified
+BEFORE UPDATE ON internal.collab
+FOR EACH ROW
+EXECUTE FUNCTION update_last_modified();
+
+-- migrate:down
+DROP TRIGGER update_website_last_modified ON internal.website;
+DROP TRIGGER update_settings_last_modified ON internal.settings;
+DROP TRIGGER update_header_last_modified ON internal.header;
+DROP TRIGGER update_home_last_modified ON internal.home;
+DROP TRIGGER update_article_last_modified ON internal.article;
+DROP TRIGGER update_footer_last_modified ON internal.footer;
+DROP TRIGGER update_collab_last_modified ON internal.collab;
+
+DROP FUNCTION update_last_modified();
\ No newline at end of file
diff --git a/web-app/src/routes/(authenticated)/+page.svelte b/web-app/src/routes/(authenticated)/+page.svelte
index 8c5a54a..8ec8870 100644
--- a/web-app/src/routes/(authenticated)/+page.svelte
+++ b/web-app/src/routes/(authenticated)/+page.svelte
@@ -37,7 +37,7 @@
       </label>
       <label>
         Title:
-        <input type="text" name="title" />
+        <input type="text" name="title" maxlength="50" pattern="\S(.*\S)?" required />
       </label>
 
       <button type="submit">Submit</button>
@@ -112,7 +112,14 @@
                 <input type="hidden" name="id" value={id} />
                 <label>
                   Title
-                  <input type="text" name="title" value={title} />
+                  <input
+                    type="text"
+                    name="title"
+                    value={title}
+                    maxlength="50"
+                    pattern="\S(.*\S)?"
+                    required
+                  />
                 </label>
 
                 <button type="submit">Submit</button>
diff --git a/web-app/src/routes/(authenticated)/website/[websiteId]/+page.svelte b/web-app/src/routes/(authenticated)/website/[websiteId]/+page.svelte
index 0b8ae74..6769e80 100644
--- a/web-app/src/routes/(authenticated)/website/[websiteId]/+page.svelte
+++ b/web-app/src/routes/(authenticated)/website/[websiteId]/+page.svelte
@@ -33,6 +33,8 @@
           type="color"
           name="accent-color-light"
           value={data.globalSettings.accent_color_light_theme}
+          pattern="\S(.*\S)?"
+          required
         />
       </label>
       <label>
@@ -41,6 +43,8 @@
           type="color"
           name="accent-color-dark"
           value={data.globalSettings.accent_color_dark_theme}
+          pattern="\S(.*\S)?"
+          required
         />
       </label>
       <label>
@@ -74,11 +78,22 @@
       </label>
       <label>
         Logo text:
-        <input type="text" name="logo-text" value={data.header.logo_text} />
+        <input
+          type="text"
+          name="logo-text"
+          value={data.header.logo_text}
+          pattern="\S(.*\S)?"
+          required={data.header.logo_type === "text"}
+        />
       </label>
       <label>
         Logo image:
-        <input type="file" name="logo-image" accept={ALLOWED_MIME_TYPES.join(", ")} />
+        <input
+          type="file"
+          name="logo-image"
+          accept={ALLOWED_MIME_TYPES.join(", ")}
+          required={data.header.logo_type === "image"}
+        />
       </label>
 
       <button type="submit">Submit</button>
@@ -99,7 +114,7 @@
     >
       <label>
         Main content:
-        <textarea name="main-content" rows="20">{data.home.main_content}</textarea>
+        <textarea name="main-content" rows="20" required>{data.home.main_content}</textarea>
       </label>
 
       <button type="submit">Submit</button>
@@ -120,7 +135,9 @@
     >
       <label>
         Additional text:
-        <textarea name="additional-text" rows="5">{data.footer.additional_text}</textarea>
+        <textarea name="additional-text" rows="5" maxlength="250" required
+          >{data.footer.additional_text}</textarea
+        >
       </label>
 
       <button type="submit">Submit</button>
diff --git a/web-app/src/routes/(authenticated)/website/[websiteId]/articles/+page.svelte b/web-app/src/routes/(authenticated)/website/[websiteId]/articles/+page.svelte
index 2de4e75..8be8554 100644
--- a/web-app/src/routes/(authenticated)/website/[websiteId]/articles/+page.svelte
+++ b/web-app/src/routes/(authenticated)/website/[websiteId]/articles/+page.svelte
@@ -35,7 +35,7 @@
       >
         <label>
           Title:
-          <input type="text" name="title" />
+          <input type="text" name="title" pattern="\S(.*\S)?" maxlength="100" required />
         </label>
 
         <button type="submit">Submit</button>
diff --git a/web-app/src/routes/(authenticated)/website/[websiteId]/articles/[articleId]/+page.svelte b/web-app/src/routes/(authenticated)/website/[websiteId]/articles/[articleId]/+page.svelte
index c173d95..d81f73a 100644
--- a/web-app/src/routes/(authenticated)/website/[websiteId]/articles/[articleId]/+page.svelte
+++ b/web-app/src/routes/(authenticated)/website/[websiteId]/articles/[articleId]/+page.svelte
@@ -30,19 +30,35 @@
     >
       <label>
         Title:
-        <input type="text" name="title" value={data.article.title} />
+        <input
+          type="text"
+          name="title"
+          value={data.article.title}
+          pattern="\S(.*\S)?"
+          maxlength="100"
+          required
+        />
       </label>
       <label>
         Description:
-        <textarea name="description" rows="5">{data.article.meta_description}</textarea>
+        <textarea name="description" rows="5" maxlength="250" required
+          >{data.article.meta_description}</textarea
+        >
       </label>
       <label>
         Author:
-        <input type="text" name="author" value={data.article.meta_author} />
+        <input
+          type="text"
+          name="author"
+          value={data.article.meta_author}
+          pattern="\S(.*\S)?"
+          maxlength="100"
+          required
+        />
       </label>
       <label>
         Publication date:
-        <input type="date" name="publication-date" value={data.article.publication_date} />
+        <input type="date" name="publication-date" value={data.article.publication_date} required />
       </label>
       <label>
         Cover image:
@@ -50,7 +66,7 @@
       </label>
       <label>
         Main content:
-        <textarea name="main-content" rows="20">{data.article.main_content}</textarea>
+        <textarea name="main-content" rows="20" required>{data.article.main_content}</textarea>
       </label>
 
       <button type="submit">Submit</button>