- Why do I get an error message whenever I…
- If you're getting an error message, see the troubleshooting page instead.
- How can I ensure only images with a command querystring incur additional processing?
- You don't need to do anything; that's the default behavior.
- Are multi-page .TIFFs supported?
- Yes - you can convert any page of a multi-page .TIFF to .jpg, .png, or .gif. Use ?page=x&format=jpg
- Is load balancing across multiple servers supported?
- Yes, and all plugins support web farms, web gardens, and load balancing.
- Do the image names change when they are resized? Is SEO affected?
- No, image names are retained - SEO isn't affected.
- Is it necessary to wildcard map everything to ASP.NET when using IIS6?
- No - you can map .jpg, .png, and .gif individually, but you need to follow this KB article to prevent issues.
- I'm getting OutOfMemory exceptions when I try to resize certain large images for the first time (subsequent requests are fine). They're only 15MB in jpeg form, and I have 100MB of free RAM.
- A 15MB JPG uncompresses to about 80MB in bitmap form (depending upon the compression level). If you are resizing to a 2MB jpeg (15MB BMP), memory requirements for the operation are roughly 110MB (15 + 80 + 15). If you plan on using the resizer for very high-resolution photos (above 8MP), I suggest making sure you have ample amounts of RAM. 400MB to 1GB is usually plenty for the average web site with disk caching enabled.
- I have a bundle with ImageResizer, but I see it's no longer available for sale. What gives?
- Bundles were discontinued in February 2013, although all bundle purchases are still valid. You can find out any information you need about bundles here.
- I have a question about a license or payment.
- Check out our store's own faq page for questions on licenses.
- How do I auto-crop a certain distance or percentage away from an edge, instead of centering?
- Manual cropping is applied before automatic cropping, so you can use that to crop the image before auto-cropping takes effect. To auto-crop against 10% away from the top of the image, use this:
- Can I resize the same image to different sizes?
- Yes, there is no limit on how many sizes of an image can be created.
- Is it possible to specify the width and height, and have your image resized and cropped to fit the aspect ratio, losing as little image area as possible?
- Yes, and it is easy. Use ?width=x&height=y&mode=crop.
- If I resize a photo to its original size, will a new photo be returned, or the original?
- All photos are re-compressed, even if the original photo is the same size. This allows ICC correction, file size improvement, and metadata removal.
- Can the resizer crop, then resize at the same time?
- Yes, you can specify a crop rectangle with ?crop=(x1,y1,x2,y2) or ?mode=crop, and add &width=x or any of the resizing commands to resize the resulting crop. All commands can be combined.
- When I resize a small image to larger dimensions, it stays at the original size.
- This is by design - add &scale=both to allow images to be upscaled. You might want to consider up-scaling client-side to save bandwidth. Just set both width and height on the <img> tag. If you just want padding, use &scale=canvas
- Can I use this on images not located on the server?
- Yes, with RemoteReader (Any HTTP server), S3Reader (Amazon S3 blobs), AzureReader (Azure blobs), MongoReader (GridFS) or SqlReader (SQL blobs).
- Can I use this with images stored in a database?
- Sure, with the SqlReader plugin.
- Can I use this to resize images as users upload them?
- Sure! I suggest keeping the original images around and using the resizer normally (in case you later want larger images). However, it's easy to resize during upload.