how to add thumbnail image

Does your theme support post thumbnails?

no, thats why i want that thumbnail images on my frontpage. my theme is newsweek theme with magazine style. is there any code to do this?

i just read the link should i try the code from that link?
thanks for the link:D

i tried the code from
https://markjaquith.wordpress.com/2009/12/23/new-in-wordpress-2-9-post-thumbnail-images/
but it didnt work:(

should i try the code from that link

Yes but that’s only step 1. You’ll then need to edit each of the template files for the pages where you want to show post thumbnails and add the_post_thumbnail template tag.

A good resource/tutorial for implementing post thumbs is at:
https://markjaquith.wordpress.com/2009/12/23/new-in-wordpress-2-9-post-thumbnail-images/

this is the error msg when i updated my index.php

if ( function_exists( ‘add_theme_support’ ) ) { // Added in 2.9 add_theme_support( ‘post-thumbnails’ ); set_post_thumbnail_size( 50, 50, true ); // Normal post thumbnails add_image_size( ‘single-post-thumbnail’, 400, 9999 ); // Permalink thumbnail size }
Warning: Cannot modify header information – headers already sent by (output started at /srv/disk1/halfliferonin/www/eventsexpo.net/wp-content/themes/newsweek/functions.php:10) in /~/www/eventsexpo.net/wp-admin/theme-editor.php on line 75

please help:D my site in trouble, i cant edit my theme editor anymore. even to log out from my www.ads-software.com this msg come out

Warning: Cannot modify header information – headers already sent by (output started at /~/www/eventsexpo.net/wp-content/themes/newsweek/functions.php:6) in /~/www/eventsexpo.net/wp-login.php on line 302

Warning: Cannot modify header information – headers already sent by (output started at /~/www/eventsexpo.net/wp-content/themes/newsweek/functions.php:6) in /~/www/eventsexpo.net/wp-login.php on line 314

Warning: Cannot modify header information – headers already sent by (output started at /~/www/eventsexpo.net/wp-content/themes/newsweek/functions.php:6) in /~/www/eventsexpo.net/wp-includes/pluggable.php on line 692

Warning: Cannot modify header information – headers already sent by (output started at /~/www/eventsexpo.net/wp-content/themes/newsweek/functions.php:6) in /~/www/eventsexpo.net/wp-includes/pluggable.php on line 693

Warning: Cannot modify header information – headers already sent by (output started at /~/www/eventsexpo.net/wp-content/themes/newsweek/functions.php:6) in /~/www/eventsexpo.net/wp-includes/pluggable.php on line 694

Warning: Cannot modify header information – headers already sent by (output started at /~/www/eventsexpo.net/wp-content/themes/newsweek/functions.php:6) in /~/www/eventsexpo.net/wp-includes/pluggable.php on line 695

Warning: Cannot modify header information – headers already sent by (output started at /~/www/eventsexpo.net/wp-content/themes/newsweek/functions.php:6) in /~/www/eventsexpo.net/wp-includes/pluggable.php on line 696

Warning: Cannot modify header information – headers already sent by (output started at /~/www/eventsexpo.net/wp-content/themes/newsweek/functions.php:6) in /~/www/eventsexpo.net/wp-includes/pluggable.php on line 697

Warning: Cannot modify header information – headers already sent by (output started at /~/www/eventsexpo.net/wp-content/themes/newsweek/functions.php:6) in /~/www/eventsexpo.net/wp-includes/pluggable.php on line 700

Warning: Cannot modify header information – headers already sent by (output started at /~/www/eventsexpo.net/wp-content/themes/newsweek/functions.php:6) in /~/www/eventsexpo.net/wp-includes/pluggable.php on line 701

Warning: Cannot modify header information – headers already sent by (output started at /~/www/eventsexpo.net/wp-content/themes/newsweek/functions.php:6) in /~/www/eventsexpo.net/wp-includes/pluggable.php on line 702

Warning: Cannot modify header information – headers already sent by (output started at /~/www/eventsexpo.net/wp-content/themes/newsweek/functions.php:6) in /~/www/eventsexpo.net/wp-includes/pluggable.php on line 703

Warning: Cannot modify header information – headers already sent by (output started at /~/www/eventsexpo.net/wp-content/themes/newsweek/functions.php:6) in /~/www/eventsexpo.net/wp-includes/pluggable.php on line 706

Warning: Cannot modify header information – headers already sent by (output started at /~/www/eventsexpo.net/wp-content/themes/newsweek/functions.php:6) in /~/www/eventsexpo.net/wp-includes/pluggable.php on line 707

Warning: Cannot modify header information – headers already sent by (output started at /~/www/eventsexpo.net/wp-content/themes/newsweek/functions.php:6) in /~/www/eventsexpo.net/wp-includes/pluggable.php on line 708

Warning: Cannot modify header information – headers already sent by (output started at /~/www/eventsexpo.net/wp-content/themes/newsweek/functions.php:6) in /~/www/eventsexpo.net/wp-includes/pluggable.php on line 709

Warning: Cannot modify header information – headers already sent by (output started at /~/www/eventsexpo.net/wp-content/themes/newsweek/functions.php:6) in /~/www/eventsexpo.net/wp-includes/pluggable.php on line 868

You’ve introduced a space or an unwanted character into your theme’s functions.php file.

Solving “headers already sent” warnings

Ensure that you only paste content from a plain text editor into the file. Content copied from a web page or a word processor like Word may contain incompatible or invisible formatting characters.

thank you so much esmi for helping me, i resolve it. from this i have new knowledge:D

Excellent! ??