Image Resizer & Store Screenshot Formatter
Format images to exact pixel resolutions for Chrome Web Store screenshots (1280×800 or 640×400), promo tiles, or custom sizes with aspect ratio preservation and custom background padding.
Click or drag & drop images to resize
Supports PNG, JPG, and WebP. Upload multiple screenshots (up to 5 or more) for batch resizing.
Image Resizing, Custom Dimensions & Aspect Ratio Guide
Easily resize, letterbox, and format images for custom project requirements, app stores, social media, and web assets:
Any Width & Height in Pixels
Type any custom width and height to fit your specific needs — from tiny 16×16 icons up to 4K desktop wallpapers. You are never limited to predefined presets.
Zero Stretching with Solid Backgrounds
When using "Fit with Background", your image scales proportionately and is centered over a solid canvas of your selected color, avoiding distorted or stretched graphics.
JPEG, WebP & 24-bit PNG (No Alpha)
Supports standard web outputs. If uploading to app stores or platforms requiring no transparency, the 24-bit PNG mode renders an opaque solid canvas to pass store validation.
About the Image Resizer
The Image Resizer scales and formats images to any exact pixel dimensions for websites, app stores, social media cards, banners, and icons. Set custom width and height or choose from popular resolutions (1920×1080 FHD, 1200×630 OG, 1280×800, 1080×1080 square, and icons). Built-in "Fit with Background" preserves your original aspect ratio without distortion or stretching by centering the image over a solid background of your choice. All operations execute locally in your browser using HTML5 Canvas.
How to use the Image Resizer
- Select a resolution preset or enter custom width and height in pixels.
- Choose a fit mode: "Fit with Background" to preserve aspect ratio and pad borders, "Crop to Fill", or "Stretch".
- Upload one or more images (drag and drop or browse).
- Preview your formatted assets and download them individually or all at once.
Frequently asked questions
Can I resize images to any custom resolution?
Yes. In addition to common presets, you can enter any custom width and height in pixels. The output image is rendered to the exact resolution specified.
How does "Fit with Background" prevent image distortion?
Instead of stretching or warping your image to fit the new aspect ratio, "Fit with Background" scales the image proportionately and centers it over a solid canvas of your selected background color, ensuring crisp, undistorted visuals with the exact target dimensions.
Can I resize multiple images at once?
Yes. You can upload multiple images simultaneously. Each image is processed to the chosen resolution and can be previewed and downloaded individually or in batch.
Are my images uploaded to any server?
No. Like all Strinza tools, image processing runs 100% locally in your web browser via HTML5 Canvas. Your photos and screenshots never leave your computer.
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Image Resizer is free to use with no account, no ads and no usage limits. Every calculation runs locally in your browser, so nothing you paste is ever uploaded. See our privacy policy.