Resize Image
Resize images by pixels, percentage or ratio. Maintain quality while changing size.
or drop files here
Preview
Resize Settings
High Quality
Keep your files clear and usable while reducing size or converting formats.
100% Secure
All processing happens in your browser. Your files never leave your device.
Super Fast
Process multiple files in seconds with our optimized browser-based tools.
Compress, convert & crop images offline on iPhone - privacy-first, batch up to 200
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About Image Resizing
Image resizing is essential for optimizing photos for web, social media, email, and printing. Our image resize tool lets you change image dimensions while maintaining aspect ratio and quality. Choose from preset sizes or enter custom dimensions. Perfect for batch resizing multiple images at once. Whether you are optimizing assets for a US-hosted site on AWS, Cloudflare, or Vercel, trimming email attachments for Gmail and Outlook, or submitting documents to federal portals, this tool keeps your files lean and your workflow fast — all without uploading anything to a server.
Optimized for Users in the United States
If you are working in the United States, file size matters for email providers like Gmail (25 MB attachment cap), Outlook, and popular US hosting platforms. Compressing images and documents before uploading to Amazon S3, Cloudflare, or Netlify keeps your bandwidth costs down and improves Core Web Vitals for American visitors on both fiber and mobile networks.
- Most US email services reject attachments above 25 MB — compress to stay under that limit without switching to Google Drive or Dropbox.
- For US-based e-commerce on Shopify, aim for product images under 200 KB to keep your Google PageSpeed score competitive.
- Social platforms popular in the US — Instagram, Facebook, X (Twitter), and LinkedIn — each re-encode uploads, so feed them the smallest high-quality source file you can.
- Many US government and healthcare portals restrict document uploads to 5–10 MB; pre-compressing PDFs avoids upload failures.
How to Use This Tool
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1
Select Your Files
Click the upload button or drag and drop your files into the area. You can queue multiple files at once for batch processing.
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2
Start Processing
Pick the settings you need and start the tool. Everything runs locally in your browser — no upload, no waiting on a remote server.
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3
Download the Results
Save your processed files one by one or all at once. Your originals are never modified, so you can always start over.
Frequently Asked Questions
How to resize an image online?
Upload your image, enter the desired width and height, and download the resized version.
How to resize a photo for printing?
Upload your photo, set print dimensions in pixels or inches, and download.
What image formats does the resize tool support?
The tool supports JPG, JPEG, PNG, WebP, GIF, and BMP files. Output is saved in the same format as the original, or you can convert to JPEG or PNG during resizing. Files up to 50 MB each are accepted.
How do I resize multiple images at once?
Upload up to 20 images at a time by dragging them into the upload area or selecting them from your device. Enter one width and height for all files, click resize, and the tool processes the entire batch together. Download all resized images individually or as a ZIP file.
Will resizing an image reduce its quality?
Shrinking an image to smaller dimensions keeps quality high because pixels are removed, not added. Enlarging beyond the original size can cause blur, so avoid scaling up more than 20-30%. Quality settings between 80% and 90% for JPEG output give the best balance of size and sharpness.
What size should an image be for Instagram?
Instagram works best with square posts at 1080 x 1080 pixels, portrait posts at 1080 x 1350 pixels, and stories or reels at 1080 x 1920 pixels. Keep file sizes under 8 MB and use JPG or PNG format for sharp results.
How do I resize an image without losing quality?
Always resize downward instead of upward, lock the aspect ratio to prevent stretching, and save in PNG for graphics or high-quality JPEG around 85-90% for photos. A 4000 x 3000 pixel photo resized to 1920 x 1440 pixels stays sharp and looks identical on most screens.
How do I resize a photo to specific dimensions in pixels?
Select the custom size option, type your exact width and height in pixels, then click resize. To keep proportions, set the width only and enable lock aspect ratio so the height adjusts automatically. For example, entering a width of 1200 pixels on a 3000 x 2000 photo sets the height to 800.
Will this work with my Gmail or Outlook attachments?
Yes. Gmail and Outlook both cap attachments near 25 MB. Our tools can shrink most files well under that limit so you can attach them directly instead of linking to Google Drive or OneDrive.
Can I use this for sensitive business or healthcare documents?
Since all processing happens locally in your browser and nothing is uploaded, your files never touch our servers. This client-side approach supports privacy-conscious US workflows — still follow your own organization's data policies.
Does it work on Mac, Windows, and mobile?
Yes. Our tools run in any modern browser on macOS, Windows, ChromeOS, Linux, iOS, and Android. No downloads or installations required.
Is there a file size limit?
Most tools handle files up to 50 MB each. For larger files, process them in smaller batches for the smoothest experience.
Why Choose Let Compress?
- No upload required — your files stay on your device, aligning with US privacy expectations
- Free forever, no sign-up or credit card — we never sell your data
- Batch process dozens of files at once — built for fast US broadband and 5G workflows
- Tuned for US-hosted sites on AWS, Cloudflare, Vercel, and Netlify
- Runs in any modern browser — Chrome, Safari, Firefox, Edge on Mac, Windows, and mobile
- No file quotas or daily limits — compress as much as your project needs
References & Resources
Authoritative specifications and references for the file formats this tool works with.