25 Rounded Corners Techniques with CSS

* This post is regularly updated. *

Rounded corners is one of the most popular and frequently requested CSS techniques even the father of internet Google also launch the rounded corners style markup with her Google Adsense and let users to custom their ads recently. Actually, there are a lot of methods and techniques to create rounded corners with Cascading Stylesheets. Some are quite simple just need pure CSS, and a part of them need 2 to 4 background corner images and Javascript. So i select some quality and usable rounded corners with CSS techniques for you to have the best choices.

Note: Here are some additional related articles on DevWebPro you should also take a look at:

- Advantages of Using Corners Without Images

- Smooth Your Design and Round Those Corners!

- Rounded Corners Using CSS

Techniques

ThrashBox – create rounded-corner boxes with visual flare and the absolute minimal amount of semantically correct markup.

http://www.vertexwerks.com/tests/sidebox/

Even More Rounded Corners With CSS – nice technique with fluid rounded corner dialogs and support for borders, alpha transparency throughout, gradients and patterns.
Even More Rounded Corners With CSS

DomCorners – a very simple technique for getting rounded corners.
DomCorners

virtuelvis.com Rounded corners in CSS – allow you to retrofit this to existing designs without altering any markup.
Rounded corners in CSS

Transparent custom corners and borders version 2 – a technique for creating custom corners and borders with optional alpha transparency.
Transparent custom corners and borders version 2

CSS Teaser Box with rounded corners – by Roger Johansson, the same author of Transparent custom corners and borders version 2.
CSS Teaser Box

News List – was designed to display links to recent news.
news list

CSS Liquid Round Corners – a re-usable rounded box, note that it needs total 6 images for wrap the corners.
CSS Liquid Round Corners

Anti-aliased Nifty Corners – based on Nifty Corners and modified by Steven Wittens.
Anti-aliased Nifty Corners

Simple Box by tedd – another simple rounded corners.
Simple Box by tedd

CSS and round corners making accessible menu tabs – decent rounded corners style menu tabs technique.
CSS and round corners Making accessible menu tabs

CSS and round corners borders with curves – make a rounded corners borders with curves.
CSS and round corners Borders with curves

Airtight Corners – produce a box with rounded corners using only one image, and off-setting that image for each corner.
Airtight Corners

Mountaintop Corners – easier way for creating decent rounded corners.
Mountaintop Corners

Editsite Rounded Corners – need a javascript to create the corners.
http://www.editsite.net/blog/rounded_corners.html

Create a rounded block or design with CSS and XHTML – easily create a rounded block.
Create a rounded block or design with CSS and XHTML

Resizable box with freely stylable corners and surface – re sizable rounded corners box.
Resizable box with freely stylable corners and surface

Smart Round Corners – a practical solution to uses small images for markup the corners.
Smart Round Corners

Lean and Clean CSS boxes – need 2 images to wrap the header and box.
http://www.tjkdesign.com/articles/roundbox.asp

Broader Border Corners – a quick and easy recipe for turning those single-pixel borders.
Broader Border Corners

Snazzy Borders – based on Nifty Corners By Alessandro Fulciniti
Snazzy Borders

Rounded corners in CSS by Adam Kalsey – requires 4 corners images.
Rounded corners in CSS by Adam Kalsey

curvyCorners – a free JavaScript program that will create on-the-fly rounded corners for any HTML DIV element, that look as good as any graphically created corners.
curvyCorners

Nifty Corners – a solution based on CSS and Javascript to get rounded corners.
Nifty Corners

quinncrowley.com – based upon a combination of pixy and Kalsey
http://www.quinncrowley.com/rounded.htm

Rounded Corners Generators

Online rounded corners generators, Rocks!

http://www.roundedcornr.com/ – the herald of rounded corners generator tool.
http://www.roundedcornr.com/

http://www.spiffycorners.com/ – simple way to generate the CSS and HTML you need to create anti-aliased corners without using images or Javascript.
http://www.spiffycorners.com/

http://tools.sitepoint.com/spanky/ – an experimental technique for using only CSS to produce ’round-cornered content boxes’ with semantically pure markup.
http://tools.sitepoint.com/spanky/

http://spiffybox.com/ – another project by the owner of Spiffy Corners.
http://spiffybox.com/

Tutorials

There are quite a lot of CSS rounded corners tutorials, it is impossible to post all articles here. So selection is necessary, here is some you may feel interesting.

Rounded Corners with CSS and JavaScript by Simon Willison
Rounded corners are one of the most frequently requested CSS techniques. As with many things in CSS, there are various ways in which this problem can be approached. In this article, I’ll look at the pros and cons of some common techniques and introduce a new technique that utilises both CSS and JavaScript.

Rounded Corners without Images: A Nifty Corners Inspiration
What is it all about? It’s a method of creating rounded corners of an element without using images, just with a piece of JavaScript and few drops of CSS. I like rounded corners, but the necessity to create for every diameter and every combination of foreground and background color 4 images for me as the designer and to download them for the user makes me use the square ones in most cases.

CSS Design: Creating Custom Corners & Borders by Søren Madsen
We’ve all heard the rap:
“Sites designed with CSS tend to be boxy and hard-edged. Where are the rounded corners?”
Answer: the rounded corners are right here. In this article, we’ll show how customized borders and corners can be applied to fully fluid and flexible layouts with dynamic content, using sound and semantically logical markup.

Rounded Corner Boxes the CSS3 Way by Andy Budd
If you’ve been doing CSS for a while you’ll know that there are approximately 3,762 ways to create a rounded corner box. The simplest techniques rely on the addition of extra mark-up directly to your page, while the more complicated ones add the mark-up though DOM manipulation.

*Updates

CSS Rounded Corners ‘Roundup’ – one more great list by Smiley Cat.

146 thoughts on “25 Rounded Corners Techniques with CSS

  1. btw Josh IE7 is update broswer. Even though it doesnt follow all the rules, a ton of your viewers leave since your site dont work with IE. Nice graphic, but not really applicable. IE 7 isnt old. I test my site with opera, IE and netscape. Id say 70% or more use IE. Just a tip.

  2. I recently had a need for rounded-corner boxes that work over a patterned background and from what I could tell none of the ones listed here allow for that, at least not any of the pure css ones. So I came up with my own solution that seems to work pretty well which you can view here:

    http://nuttersmark.com/blog/web-development/-super-fantastic-resizable-pattern-friendly-css-rounded-corners

    There’s a couple nifty helper methods to clean it up and neatly package everything too if your a Rails developer like myself. Cheers.

  3. Jael,

    This is probably 6 months too late but you could always use one the options that uses images and simply convert 3 of the images so they are proper corners, leaving your one rounded corner.

  4. Just wanted to point out that now some of the tasks involving creating rounded corners can be automated with XHTML/CSS generator called Artisteer. There are many cool types of content blocks with rounded corners, as well as the page design itself can have rounded corners. The corner graphics is created automatically so you don’t need an image editor.

    Cheers
    John

  5. I wrote an article on how to create widget windows with rounded corners, drop shadow and gradiented backgrounds. It uses only CSS and images and is compatible with all browers. I think using images is better than the JavaScript solutions, I tend to put my PSD files under source control, that way you never lose the original file so making changes is pretty straight forward.

    http://thatguynamedandy.com/blog/css-widget-rounded-corner-gradient-drop-shadow

    Any feedback on my solution would be most appreciated.

  6. Some great advice here. Loved this article.

    I’ve recently found the site http://www.cutmypic.com to be rather useful when not wanting to use css to round corners. It let’s you specify how round you want your corners to be, it’s pretty fast, and I don’t have to load up Photoshop to do it.

  7. Why people go to such lengths to get round corners using some overcomplicated methods just to stay “100% div/css”?

    Have they all forgot KISS rule?

    Why not using css driven table nested inside of whole div layout for these layout elements which need round corners?

    In this respect table has everything divs lack.

    It helps with:

    - older browser compatibility (pretty much no issues, if css used is clean)

    - dynamically spanned connector images (small image connecting corners)

    - no problem with added content to one cell versus neighbour(s) – table always keeps expanded cell aligned to its neighbours

    - very spatially clean layout – no need for dozens of overlapping divs driven by complex css, giving most of us a good head spin to visualise it

    - no problem with 100% widths

    - no problem with 100% heights

    - no problem with keeping bottom cells on the bottom – same goes in general order of other table elements

    - taking advantage of css properties – yes! you can use classes and ids (etc) here as you would with divs

    … and above just for starters …

    So … until css3 techs are used by browsers wide and far … wouldn’t you say that turning into “div/css zealots” does not help anyone here?

  8. Hi! :) Thanks for the links, this page helped me find exactly what I needed!

    I did notice however, that not all of the links on the page go to articles. Some point to parked pages full of advertising links with nary a word on the subjects of CSS, JavaScript, or Rounded Corners. So perhaps it’s time to check & update the links? :)

    Thanks again for the info!!

  9. nice tutorial, there is only i got prb, when try to add div inside with float properties the bottom border are not supporting.. any suggestion

  10. when add any div inside with float property the bottom border are not supporting they comes upside and create a small box……… any suggestion

  11. Article on ThrashBox – rounded-corner boxes with visual flare and the absolute minimal amount of semantically correct markup is good post.

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