Frequently Asked Questions
Find answers to common questions about our image resizing, cropping, and conversion tools. Can't find what you're looking for? Contact us.
General Questions
What is ImageResizer.site?
ImageResizer.site is a free online image editing platform that provides tools for resizing, cropping, and converting images. All processing happens directly in your browser, which means your images are never uploaded to our servers, ensuring complete privacy and fast processing.
Is ImageResizer.site completely free to use?
Yes, ImageResizer.site is 100% free to use with no hidden fees, premium tiers, or subscription requirements. We support our service through non-intrusive advertising. There are no watermarks added to your images, and you can use the service as many times as you need.
Do I need to create an account to use the tools?
No, you don't need to create an account or sign up for anything. Simply visit our website and start using any of our tools immediately. We don't require any personal information from you.
What makes ImageResizer.site different from other image tools?
Unlike most online image tools that upload your files to their servers, ImageResizer.site processes everything directly in your browser using advanced JavaScript and HTML5 Canvas technology. This means faster processing, complete privacy (your images never leave your device), and no risk of your personal photos being stored on external servers.
Can I use ImageResizer.site on my mobile device?
Yes, ImageResizer.site is fully responsive and works on all modern mobile devices including smartphones and tablets. Whether you're using an iPhone, Android phone, iPad, or any other device, you can resize, crop, and convert images directly from your mobile browser.
Image Formats & Compatibility
What image formats are supported?
We support all major image formats for input: JPEG/JPG, PNG, WebP, GIF, and BMP. For output, you can choose between JPEG, PNG, and WebP formats. Our Image Converter tool also supports ICO format for creating website favicons.
What is the difference between JPG and PNG?
JPEG (JPG) uses lossy compression, making it ideal for photographs with smaller file sizes. PNG uses lossless compression and supports transparency, making it perfect for logos, graphics, and images with text. Choose JPEG for photos and PNG when you need transparency or lossless quality.
What is WebP and should I use it?
WebP is a modern image format developed by Google that offers superior compression - typically 25-35% smaller files than JPEG or PNG with similar quality. It supports both lossy and lossless compression plus transparency. All modern browsers support WebP, making it an excellent choice for web images.
Can I convert GIF to other formats?
Yes, you can convert GIF images to JPEG, PNG, or WebP using our Image Converter tool. Note that animated GIFs will lose their animation when converted to static image formats like JPEG or PNG.
What is the best format for social media images?
For social media, JPEG is generally the best choice for photographs due to smaller file sizes and faster uploading. Use PNG if your image contains text overlays or requires a transparent background. Most social platforms will compress your images anyway, so starting with a high-quality JPEG (85-90% quality) is usually sufficient.
File Size & Limits
What is the maximum file size I can upload?
The maximum file size for uploads is 10MB per image. This limit ensures optimal performance across all devices and browsers. If your image is larger than 10MB, we recommend compressing it first using other software or reducing its dimensions.
Why are my images so large after resizing?
Image file size depends on both dimensions and format. If you're getting larger files than expected, try: 1) Using JPEG format instead of PNG for photographs, 2) Reducing the quality setting for JPEG output, 3) Ensuring you're not upscaling the image to larger dimensions than the original.
How can I reduce image file size without losing quality?
To reduce file size while maintaining quality: 1) Resize to appropriate dimensions - don't keep images larger than needed, 2) Use JPEG format at 80-85% quality for photos, 3) Use WebP format for best compression, 4) Remove unnecessary metadata. For most web uses, the visual difference between 85% and 100% quality is imperceptible.
What dimensions should I use for web images?
For most web uses, 1920 pixels on the longest side is more than sufficient. For blog images and content, 1200 pixels width is common. For thumbnails, 300-400 pixels works well. Consider your actual display size and add some buffer for retina displays (2x the CSS pixel size).
Privacy & Security
Are my images uploaded to your servers?
No, your images are never uploaded to our servers. All image processing happens entirely within your web browser using client-side JavaScript. Your files stay on your device throughout the entire process, ensuring complete privacy.
Do you store or have access to my images?
Absolutely not. We have no ability to see, access, or store your images. The processing happens in your browser using your device's computing power. We never receive your image data in any form.
Is it safe to use ImageResizer.site for sensitive images?
Yes, it's completely safe. Since your images never leave your device and are processed locally in your browser, there's no risk of your sensitive photos being intercepted, stored, or accessed by anyone. Your privacy is guaranteed by the technical architecture of our tools.
What data do you collect?
We collect basic anonymous analytics data (page views, browser type, general location) to understand how our service is used and to improve it. We use Google Analytics for this purpose. We never collect, store, or have access to any images you process. See our Privacy Policy for complete details.
Technical Questions
How does browser-based image processing work?
Our tools use HTML5 Canvas API and JavaScript to process images directly in your browser. When you upload an image, it's loaded into memory on your device. All transformations (resizing, cropping, format conversion) are performed using your device's processor. The result is then downloaded directly to your device. No server communication is involved in the image processing.
Why does processing seem slow on my device?
Processing speed depends on your device's capabilities, image size, and browser. Larger images require more processing power. If you experience slowness: 1) Try using a desktop computer for very large images, 2) Close other browser tabs to free up memory, 3) Make sure your browser is up to date.
What browsers are supported?
ImageResizer.site works with all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. We recommend using the latest version of your browser for optimal performance. Internet Explorer is not supported.
Does the tool work offline?
Currently, you need an internet connection to load our website. However, once the page is loaded, the image processing itself happens offline in your browser. We're considering adding Progressive Web App (PWA) functionality for full offline support in the future.
What is aspect ratio and why should I maintain it?
Aspect ratio is the proportional relationship between an image's width and height (e.g., 16:9, 4:3, 1:1). Maintaining aspect ratio means when you change width, height adjusts proportionally (and vice versa). This prevents your images from appearing stretched or squished. We recommend always keeping aspect ratio locked unless you specifically need to distort the image.
Using Our Tools
How do I resize an image to specific dimensions?
1) Go to our Image Resizer tool, 2) Upload your image by dragging it onto the page or clicking 'Select Image', 3) Enter your desired width and/or height in pixels (or choose a different unit), 4) Toggle aspect ratio lock on/off as needed, 5) Select your output format (JPG or PNG), 6) Click 'Resize & Download' to save your resized image.
How do I crop an image?
1) Go to our Image Crop tool at /tools/image-crop, 2) Upload your image, 3) Drag the crop box to select the area you want to keep, 4) Use the corner handles to resize the crop area, 5) Choose an aspect ratio preset if needed (1:1, 16:9, etc.), 6) Select output format, 7) Click 'Crop & Download' to save your cropped image.
How do I convert an image to a different format?
1) Go to our Image Converter tool at /tools/image-converter, 2) Upload your image, 3) Select your desired output format (JPG, PNG, WebP, etc.), 4) Adjust quality settings if available, 5) Click 'Convert & Download' to save your converted image.
Can I resize images by percentage instead of pixels?
Yes! Our Image Resizer tool supports multiple units. Click on the unit dropdown and select 'Percentage (%)' to resize by percentage. You can also choose centimeters or inches if you need real-world measurements for print purposes.
How do I resize an image for Instagram?
For Instagram: Square posts should be 1080 x 1080 pixels (1:1 ratio). Portrait posts should be 1080 x 1350 pixels (4:5 ratio). Stories and Reels should be 1080 x 1920 pixels (9:16 ratio). Use our Image Resizer or Image Crop tool to achieve these exact dimensions.
Can I undo changes after processing?
Our tools always work on a copy of your image - your original file is never modified. If you're not happy with the result, simply close it and start again with your original image. We recommend always keeping your original files backed up.
Troubleshooting
Why isn't my image uploading?
Common reasons for upload issues: 1) File size exceeds 10MB limit - try compressing first, 2) Unsupported format - we accept JPG, PNG, WebP, GIF, and BMP, 3) Browser issues - try refreshing the page or using a different browser, 4) File might be corrupted - try a different image to test.
The download isn't working. What should I do?
If downloads aren't working: 1) Check if your browser is blocking downloads - look for a popup blocker notification, 2) Try a different browser, 3) Make sure you have enough storage space on your device, 4) Clear your browser cache and try again, 5) Disable any extensions that might interfere with downloads.
My resized image looks blurry. Why?
Blurriness usually occurs when: 1) You're significantly enlarging (upscaling) an image - you can't add detail that doesn't exist, 2) The original image was low quality, 3) Heavy JPEG compression was applied. For best results, start with the largest/highest quality original and resize down, not up.
The colors in my output image look different. Why?
Color differences can occur due to: 1) Format conversion - JPEG doesn't support transparency, so transparent areas become white, 2) Color profile differences between browsers, 3) Display calibration differences between devices. For most uses, these differences are minimal and not noticeable.
I can't find my downloaded file. Where did it go?
Downloaded files typically go to your browser's default download location: On Windows, usually the 'Downloads' folder. On Mac, usually the 'Downloads' folder or your desktop. On mobile, check your device's 'Files' or 'Downloads' app. You can also check your browser's download history (Ctrl+J on most browsers).
Still Have Questions?
We're here to help! If you couldn't find the answer you were looking for, please don't hesitate to reach out to us.