📐 Image Resizer Online
Image Resizer changes photo dimensions in bulk: preset widths for social platforms, marketplace sizes, or exact custom dimensions, with Lanczos resampling for sharp results. Runs entirely in your browser with batch support and ZIP export. Free, no signup, no uploads.
- PriceFree, unlimited
- Sign-upNot required
- PresetsSocial + custom
- UploadNever — local
Three ways to set the target size
| Method | How you enter it | Keeps aspect ratio? | Best for |
|---|---|---|---|
| Width only | Type a single pixel value | Yes, height recalculates | Fitting a photo into a 1200px-wide blog column |
| Width + height | Type both values | Locked by default — untick to stretch | Making an exact 600×600 marketplace thumbnail |
| Percentage | Slider from 10% to 200% | Yes, always | Bulk shrinking a folder of photos by half |
| Social presets | Pick a platform preset | Presets define a fixed frame | Profile pictures and cover images |
| Batch output | Add several files, then export | Same setting applies to all | A whole product catalogue in one pass |
To resize an image to exactly 20KB: upload your photo, set the target file size to 20KB, and download instantly. This free resizer adjusts dimensions and quality automatically to hit your exact target — perfect for ID photos, exam registration forms, and government website uploads. No signup, no watermark, all processing happens in your browser.
📏 Resize images by inches (for printing): Need to resize a photo to 4x6 inches, 8x10 inches, or passport photo size? Just enter your target dimensions in pixels at 300 DPI (standard print quality) — for example, 4x6 inches = 1200x1800 pixels. This tool works perfectly for printing, posters, and photo prints.
Image Resizer: Resize images by pixels or percentage
Image Resizer lets you resize images by pixels or percentage. Upload any image and get a resized image — all processed locally in your browser, with no uploads and no sign-up.
Resize photos for social media profile pictures
Resize photos for social media profile pictures. This is one of the most common reasons people reach for Image Resizer — and it handles the job in seconds, entirely in your browser.
Scale images down for email thumbnails
Scale images down for email thumbnails. This is one of the most common reasons people reach for Image Resizer — and it handles the job in seconds, entirely in your browser.
Batch-resize product images to a uniform size
Batch-resize product images to a uniform size. This is one of the most common reasons people reach for Image Resizer — and it handles the job in seconds, entirely in your browser.
Everything You Need in a Image Resizer
Powerful features that make Image Resizer fast, private, and free.
Precise Dimensions
Set exact pixel sizes or percentages for pixel-perfect results.
Aspect-Ratio Lock
Maintain proportions automatically to avoid distortion.
Free-Form & Presets
Crop freely or use social-media-ready aspect-ratio presets.
100% Private
All processing is local — your images never leave your browser.
Free Forever
No sign-up, no watermarks, no hidden limits.
Cross-Platform
Works on any device with a modern browser.
How to Use
Upload
Select the image you want to resize.
Set Dimensions
Enter width and height in pixels, or use the percentage slider.
Resize & Save
Click Resize and download the result.
Detailed User Guide
Step 1: Upload Your Image
Upload a JPG, PNG, or WebP image. The tool automatically reads the original dimensions and populates the width and height fields.
Step 2: Set New Dimensions
You have two ways to resize:
- Exact pixels: Enter width and height in pixels. Check "Keep aspect ratio" to automatically maintain proportions when changing one dimension.
- Percentage: Use the slider to scale by percentage (10%–200%). This is the quickest way to make an image half-size or double-size.
Step 3: Resize & Download
Click "Resize" to process. The preview updates to show the new dimensions. Click "Download" to save the resized image with -resized appended to the filename.
Common Social Media Sizes
- Instagram Post — 1080 × 1080 px (square) or 1080 × 1350 px (portrait)
- Instagram Story / Reel — 1080 × 1920 px (9:16)
- Twitter / X Header — 1500 × 500 px
- Facebook Cover — 820 × 312 px
- LinkedIn Banner — 1584 × 396 px
- YouTube Thumbnail — 1280 × 720 px
Pro Tips
- Enlarging an image beyond its original size reduces sharpness — use AI upscalers for better results
- Reducing size generally maintains excellent quality thanks to high-quality canvas scaling
- Use the percentage slider for quick batch-like scaling (50% = half dimensions, 25% = quarter area)
- For print, aim for 300 DPI. A 1200 × 1800 px image at 300 DPI prints at 4 × 6 inches
Recommended Tools for Image Projects
Check these useful supplies to print and create your edited images.
Glossy Photo Paper
High-quality photo paper for printing your edited pictures.
Canon SELPHY CP1500
Wireless compact photo printer — print 4x6 photos from your phone.
Matte Inkjet Art Paper
Matte heavy-weight paper for art prints & graphic works.
SanDisk Extreme SSD 1TB
Rugged portable SSD — fast backup for photos, videos, and large files.
Etekcity 24" 5-in-1 Reflector
Ultra-lightweight 8oz reflector — easy to carry on location shoots.
As an Amazon Associate, we earn from qualifying purchases.