You can now use our WP Far Future Expiration Plugin to do this task easily
If your server is Apache (most web servers), you can use the ‘ExpiresDefault’ directive to set an expiration date relative to the current date.
ExpiresDefault "access plus 2 months"
This sets the expiry date of the file 2 months into the future from the current time. The following values can be used to specify the time period:
eg. ExpiresDefault “access plus 14 days”
ExpiresDefault "access plus 2 hours"
# Expire images header
ExpiresByType image/gif A2592000
ExpiresByType image/png A2592000
ExpiresByType image/jpg A2592000
ExpiresByType image/jpeg A2592000
ExpiresByType image/ico A2592000
ExpiresByType text/css A2592000
A2592000 means 1 month in the future (60*60*24*30=2592000)
Video Tutorial (Adding Far Future Expiry Header)
According to Wikipedia – “An ETag (entity tag) is an HTTP response header returned by an HTTP/1.1 compliant web server used to determine change in content at a given URL. When a new HTTP response contains the same ETag as an older HTTP response, the contents are considered to be the same without further downloading.”
ETags were added to provide a mechanism for validating entities that is more flexible than the last-modified date but If you’re not taking advantage of the flexible validation model that ETags provide, it’s better to just remove the ETag altogether. Removing the ETag reduces the size of the HTTP headers in the response and subsequent requests thus improving site performance.
Add the following to your .htaccess file to remove ETags:
These tweaks can dramatically improve the performance of your site even though they are minor and doesn’t take that long to apply. I have seen a 20% speed improvement on my page loads just by adding these tweaks. My home page used to take around 5 seconds to load but then it dropped to around 3 seconds after these tweaks. Below is a screenshot of YSlow:
Comments (111 responses)
The commenting system stripped out the code from my examples.
Basically, just paste this line:
before you specify the expiration timeframes if you’re using the FilesMatch method as mentioned in the post on this page.
Thanks for sharing 🙂
I’ve tried it n this trick work very well. My blog run faster than before.
@Mukesh, Try a 1 year value rather than 1 month. YSlow sometimes doesn’t catch it if that value is not long enough.
Ive placed the first code in my htaccess file and changed it to 1 months, but Yslow still says I have nothing? Any suggestions. If you need any more info just say.
tnx buddy for this after adding it my YSlow grade jumps to 92 which is pretty impressive 🙂
I´m using Joomla, but I think it is the same as for WP.
Thany for the Tipps
Thank you for this tip I will try this with my site and see what happens.
Thanks for giving me the useful information. Thanks!
Thank you, thank you! Clear concise instructions. I’m just setting up a new site and after testing my page speed saw I should change my set expires. I remember this coming up on an older site a few years ago and not being able to find HOW to change this, when YSlow was telling me I SHOULD change it.
I was getting a grade B, 81% so lets see what kind of improvement I get after implementing this.
Thanks for the tip, needed a way to cache images as there are a lot on my site.
Interesting posts and awesome blog!I will be happy to visit it again!
Great information…I need the expires header detail to complete my 95% ySlow score. I can’t get to perfect because I don’t use CDN.
thanks for sharing tips! I really like what you guys are up too. Such clever work and coverage! Keep up the terrific works guys I’ve added you guys to our blogroll.
The code works like a charm, I really appreciate for sharing your Big idea to us. Very Helpful. Thank a lot.
You are amazingly great. I appreciate the tutorial, very helpful. nice one admin, page load on website gains high performance and seo friendly to search engines.
Thanks for the information, has made my site faster, and like you say doesn`t take much time to do !!!
Hi guys (and gals)…
Once again, very exceptional: above it, actually…Helped me gain an edge in my cache (plus other methods I’ve started for my site: DNS, sprites, etc.)…I’ve seen load-times (initial & cached) jump to amazing levels…This was just one of the ideas that helped me attain those high-marks on this project…
Thanks again for sharing & have a great day!
totally useful, and if anyone whose not much of a coder type, you may use plugins. try searching for seo plugins or minifying the theme itself.
Thank you. Applied on my blog, my blog so much faster now
For wordpress user, http://wordpress.org/extend/plugins/w3-total-cache/ is best way to apply this script. Thank you
searching for “setting expiry date for jpg” in google brought me to your site and in just minutes i got 3 % more page speed and an upgrade to A in Yslow! my site Americaurlaub.de means americavacancies and has some infos for tourists that are interested in visiting America. native german speakers, mostly from germany, austria and switzerland.
thanks to you, the site is running more faster now.
Thank you for sharing this info. I was able to add expires header by modifying the .htaccess file and now my site is loading faster… amazing!
Thank you for the article, I have copied and paste to my blog .htaccess 🙂
Thank you for a great explanation of thees too issues. It made me understand what’s going on much better.
I also discovered that there is a fantastic plugin actually doing the job for you.
Now, I’m not a big fan of plugin’s – to many only slow down your site – but since this particular one does so much more good for your seo, than just this, I believe it’s worth the(eventual) loss of speed to install it anyway.
I also found some additional great help on speeding up your site at Yahoo.com
Ones again, thank you for your article. I’ll sure come back and see what else you have to tell.
i heard this expires on today and i search all the way to internet and I found your blog. I’m happy really just install in to my site.
very thoughtful peace of idea. I will try it otherwise will be great if you can help and just pay you for the service!
hey admin, the expires option is such a wonderful code …this cache the expires date of my files and so far so good.. It 4.3/5 rating now.. Thanks..
I never tried hope it will make fast… I implement it right now..
thanks for share, It has information I have been searching for a long time
Thank you very much, work fine on my blog, page speed 92% and yslow 89%. 🙂
I might be new to this but thanks alot. That helped me improve my page load speed.
Thanks for your well written article, I`m starting to understand this now, thanks matey!!
I was searching for how to add “expires in the headers” .so found your great article Thank you very much..
very good article, very useful for my site. Thx!
Nice article. Thank you a lot for share!
Nice site ! I will save it in my favorites. thanks
Thanks for sharing 🙂
I’ve tried it n this trick work very well. My blog run faster than before.
This is quite helpful. I want to do the most I can to make things faster for my sites.
When I page the above code in .htaccess I am getting internal Error, however I have managed to get my scores to 70% which is C Grade. Still I have some issues left like use a CDN, Add Expires Headers, Compress Componenets with gzip and Reduce DNS lookups.
I am still figuring out how to solve this problems.. I am using cloud hosting from nethosting. anything to be done in WHM.
Required your suggestion.
@Friv, you will most likely need to change the time to more than 1 year for the tool to recognize it but you can be sure that your images are being cached by browsers for that 2 month (when you browse various pages of your site you will notice the difference)
I am finding it.
@Nathan, You can load one of your site’s page with images few times and get an average page load time. Then apply this technique and record a few more page load time after. Comparing these two sets of data should give you an indication.
Its not showing up under any testing system. How can i be sure that I have everything right?
Thanks for the tips, very useful. I was trying to find what was A2592000 means. Now I get B on YSlow.
very useful for my site. Thx!
lets put this to the test! thank you in advance.
really, a whole year! OK. many thanks for the help, appreciate it.
@Nathan, You will need to set the time to 1 year or more to get the score from Yslow but it doesnt’ mean its not working. Your static content will still be cached for 2 months and you will see an increase in performance.
Ive placed the first code in my htaccess file and changed it to 2 months, but Yslow still says I have nothing? Any suggestions. If you need any more info just say.
Some hosting providers do not allow the “expires header” for their shared hosting accounts. This is probably why its giving a 500 error when you try to use them.
I was wondering will this method of future expires adversely affect my project wonderful ads?
Also, I am using Godaddy hosting on my WordPress/Comicpress based site. So I accessed my htaccess file from my GoDaddy file manager, I checked the htaccess file and clicked edit, but every time I saved the file after adding either script version I immediately got a 500 error message on my site. When I deleted the new scripting and saved it, the error disappeared and the site functioned normally. The only other scripting in the htaccess file is for Super Cache and a couple other plugins… Is there a certain place to paste the script or certain tags etc?
I’d really like to be able to have jpgs and pngs cache since I have quite a few images on my site. Am I missing something?