TOOLGENIEFree Image Resizer & Cropper
Change image dimensions, crop to any ratio, and download in seconds — 100% private in your browser
Drag & drop an image here
Supports JPG, PNG, WebP, and GIF — your files never leave your device
How to Resize & Crop an Image Online
- Upload your image by dragging and dropping it into the box or clicking the upload button. JPG, PNG, WebP, and GIF files are all supported, and nothing is ever uploaded to a server.
- Crop your image (optional) by dragging the crop box and its handles to select the exact area you want to keep. Use the rule-of-thirds grid to compose your shot perfectly.
- Choose an aspect ratio such as 1:1 (square), 4:3, 3:2, 16:9 (widescreen), or 9:16 (portrait) — or pick Free to crop without any constraint.
- Change image dimensions by entering the exact width and height in pixels, or scale by percentage with the 25%, 50%, and 75% presets. Keep Lock aspect ratio on to preserve proportions automatically.
- Select an output format — PNG for lossless quality and transparency, JPG for smaller photos, or WebP for the best compression. Adjust the quality slider for JPG and WebP.
- Download your resized image with a single click. Your file is saved instantly to your device at the exact pixel size you set.
About the Free Image Resizer & Cropper
ToolGenie's free image resizer and cropper lets you change image dimensions to exact width and height in pixels, scale photos by percentage, and crop to any aspect ratio — all in your browser. Whether you need to resize an image for a website, create a profile picture, trim a screenshot, or prepare social media graphics, you get precise control with no software to install.
Resizing sets the perfect pixel dimensions for your use case — from thumbnails and avatars to full-width banners. Cropping removes unwanted areas so you can focus on what matters. Built-in aspect ratio presets make it easy to create perfect squares, widescreen 16:9 crops, or vertical 9:16 images for stories and reels.
Everything runs entirely in your browser using the HTML5 Canvas API. Your images are never uploaded to a server, which means your photos stay 100% private and the tool works instantly with no waiting for uploads. There are no watermarks, no signup, and no usage limits.
Export your final image as PNG (lossless, supports transparency), JPG (ideal for photographs and smaller file sizes), or WebP (modern format with superior compression). If you need a smaller file size without changing dimensions, use our free image compressor after you resize. Need a different format? Try JPG to PNG or PNG to JPG.
Frequently Asked Questions (FAQ)
1. How do I change image dimensions online?
Upload your image to the free Image Resizer & Cropper, then enter the new Width and Height in pixels under Change Dimensions. Keep Lock aspect ratio on to preserve proportions, or unlock it to set both sides independently. Optionally crop first, then download as PNG, JPG, or WebP. Everything runs in your browser — no signup required.
2. How do I resize an image to exact width and height in pixels?
After uploading your image, enter the exact width and height in pixels in the Change Dimensions section. With Lock aspect ratio enabled, changing one side updates the other so the image is not stretched. Unlock aspect ratio only when you intentionally need non-proportional dimensions. You can also use the 25%, 50%, and 75% presets to scale quickly by percentage.
3. What's the difference between resizing and compressing an image?
Resizing changes the image's pixel dimensions (for example, 4000×3000 down to 1920×1080). Compressing reduces file size in KB/MB without changing width and height. Use this page to crop and resize to the size you need; then use ToolGenie's Image Compressor if the file is still too large for upload or the web.
4. How do I crop an image online for free?
Upload your image by dragging it into the tool or clicking the upload button. Drag the crop box handles to select the area you want to keep, choose an aspect ratio if needed, then set your output dimensions and click Download Image. The tool runs entirely in your browser, so it's completely free with no watermarks or signup.
5. Is this image resizer and cropper really free and private?
Yes. The tool is 100% free with no limits, watermarks, or accounts. All image processing happens locally in your browser using the HTML5 Canvas API, which means your photos are never uploaded to any server and never leave your device.
6. What image formats can I export to?
You can export your cropped and resized image as PNG (lossless, supports transparency), JPG (smaller file size, ideal for photos), or WebP (modern format with excellent compression). For JPG and WebP you can also adjust the quality to balance file size and clarity.
7. How do I crop an image to a square (1:1) or 16:9 ratio?
Select an aspect ratio preset such as 1:1 for a perfect square, 4:3, 3:2, 16:9 for widescreen, or 9:16 for vertical/portrait. The crop box will lock to that ratio so you can position it precisely. Choose "Free" if you want to crop without any ratio constraint. Then resize to the exact pixel dimensions you need.
8. How do I resize an image by percentage instead of pixels?
Use the percentage scale presets (25%, 50%, 75%, or 100%) to shrink or restore the image proportionally without typing pixel values. For a custom size, enter exact width and height in pixels instead.
9. Will cropping or resizing reduce my image quality?
Cropping simply removes pixels outside the selected area and does not affect the quality of the remaining region. Resizing to a smaller size usually keeps perceived quality high, while enlarging beyond the original dimensions can introduce softness. Exporting as PNG keeps maximum quality, while JPG and WebP let you fine-tune quality with the slider.
10. Can I crop a profile picture for Instagram, LinkedIn, or a passport photo?
Absolutely. Use the 1:1 aspect ratio for square profile pictures on Instagram or LinkedIn, then change the image dimensions to the recommended pixel size. For passport-style photos, crop tightly around the subject and set the required output width and height before downloading.
11. Do I need to install any software or app to resize and crop images?
No installation is required. This is a web-based image resizer and cropper that works instantly in any modern browser on Windows, Mac, Linux, Android, and iOS. There's nothing to download and no app to install.
12. Can I use this tool on my phone or tablet?
Yes. The image resizer and cropper is fully responsive and supports touch gestures, so you can drag the crop handles and change image dimensions on smartphones and tablets just as easily as on a desktop.
Tips for Resizing & Cropping Images
- Set exact dimensions for the platform: Use 1:1 for Instagram posts and profile pictures, 16:9 for YouTube thumbnails and banners, and 9:16 for stories, reels, and TikTok videos — then enter the recommended width and height in pixels.
- Keep Lock aspect ratio on when resizing: This prevents your image from looking stretched or squashed. Only unlock it when you specifically need non-proportional dimensions.
- Resize first, then compress: Change image dimensions to the actual display size here, then use the Image Compressor to reduce file size in KB without altering width and height again.
- Use the rule of thirds: Position key subjects along the grid lines or their intersections for more balanced, professional-looking compositions.
- Choose PNG for graphics and transparency: Logos, icons, and screenshots with sharp edges or transparent backgrounds look best as PNG.
- Choose JPG or WebP for photos: Photographs compress much better as JPG or WebP, giving you smaller files that load faster on the web.
- Resize down, not up: Shrinking an image keeps it crisp, while enlarging beyond the original size can make it look blurry. Start with the highest-resolution source you have.
- Crop before resizing: Remove unwanted areas first, then set your final output dimensions to get exactly the framing and size you need.