How to Use This Tool
Upload Your Image
Click the upload area, drag and drop a file, or paste a screenshot from your clipboard with Ctrl+V. Accepts JPEG, PNG, WebP, BMP, and GIF up to 50 MB per image.
Choose How to Resize
Pick a resize mode: exact pixels, percentage of the original, a ready-made social media preset, or a target file size in KB. Keep the aspect ratio locked to avoid stretching, or unlock it for custom dimensions.
Rotate, Flip and Fit
Rotate the image 90 degrees left or right, flip it horizontally or vertically, and choose how it should fit the new size: stretch, fit inside with a background color, or cover and crop. The live preview updates as you go.
Download
Click Resize and Download to save the result as PNG, JPEG, or WebP. Need to resize many images at once? Switch to the Batch tab and grab them all in one ZIP.
Frequently Asked Questions
Is this tool really free?
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Yes, completely free with no limits, no sign-up, and no watermarks. Everything runs in your browser, so there are no server costs and nothing to charge for.
Are my images uploaded to a server?
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No. Your images never leave your device. All resizing happens directly in your browser. No server uploads, no external calls, 100% private.
Will resizing reduce my image quality?
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Shrinking an image generally keeps it looking sharp. Enlarging beyond the original size will look softer, because the extra pixels have to be filled in. For the best result, resize to smaller dimensions and pick PNG for lossless output, or JPEG/WebP at a quality of 85 or above.
What resize modes are available?
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Four: Pixels (type the exact width and height you want), Percentage (scale by a percentage of the original), Preset (pick from 18 ready-made sizes for social media and standard formats), and Target File Size (enter the size in KB and the tool finds the best quality automatically). You can also pick how the image fits the new size: Stretch, Fit (with a background color), or Cover and crop.
What is the maximum file size?
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Up to 50 MB per image. In single mode you resize one image at a time. In Batch mode you can add as many images as you like and download them all in one ZIP, as long as each one is under 50 MB.
Which presets are included?
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18 popular sizes: Instagram Post (1080x1080), Instagram Story (1080x1920), Facebook Post (1200x630), Facebook Cover (820x312), Twitter Post (1200x675), Twitter Header (1500x500), YouTube Thumbnail (1280x720), YouTube Banner (2560x1440), LinkedIn Post (1200x627), LinkedIn Cover (1584x396), Pinterest Pin (1000x1500), WhatsApp DP (500x500), HD 720p (1280x720), Full HD 1080p (1920x1080), 4K 2160p (3840x2160), Passport Photo (600x600), A4 at 300 DPI (2480x3508), and Favicon (32x32).
How does Target File Size mode work?
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Enter a target size in KB and the tool tries several quality levels automatically until the result lands within about 5% of your target. It is the easiest way to fit an image under an upload or attachment limit without guessing.
Can I rotate and flip images?
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Yes. Rotate 90 degrees left or right, and flip horizontally or vertically. Transforms appear instantly in the live preview and are baked into the final image when you download.
What output formats are supported?
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You can save the result as PNG (lossless, larger), JPEG (smaller, with a quality slider), or WebP (modern format, usually the smallest, also with a quality slider). BMP and GIF are accepted as input only and are saved out as one of these three.
Will my work be saved if I refresh or close the tab?
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Yes. Your uploaded image and all your settings are automatically saved on your device, so refreshing the page or coming back later restores everything exactly as you left it. Click Clear All to wipe the saved state.
What Is Image Resizer?
Image Resizer is a free tool that lets you resize, rotate, flip, and convert images right in your browser. Set the new dimensions in pixels or as a percentage, pick a social media preset, or enter a target file size in KB, then download the result as PNG, JPEG, or WebP. No server uploads, no external calls, 100% private.
A live preview shows exactly how the result will look as you tweak settings. Use single mode for one image at a time with full controls, or switch to Batch mode to resize many images with the same settings and download them together in one ZIP. Your work is saved on your device, so you can refresh or come back later and pick up exactly where you left off.
Features Explained
Four Resize Modes
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Resize by exact pixels, by a percentage of the original, by picking from 18 social media and standard presets, or by setting a target file size in KB and letting the tool find the right quality automatically.
Three Fit Methods
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Stretch fills the exact dimensions and may distort the image. Fit scales the image to fit inside the new size and adds a background color of your choice for any empty space. Cover scales the image to fill the new size completely, cropping any overflow.
Aspect Ratio Lock
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When the lock is on, changing the width updates the height (and vice versa) so your image keeps its original proportions. Turn it off when you want exact custom dimensions.
Rotate and Flip
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Rotate 90 degrees left or right and flip horizontally or vertically. Transforms show up immediately in the live preview and are baked into the final image when you download.
Format Conversion
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Save your image as PNG (lossless, larger), JPEG (smaller, with a quality slider), or WebP (usually smallest, also with a quality slider). PNG and WebP keep transparency; JPEG does not.
Batch Processing
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Switch to the Batch tab to resize many images with identical settings in one go. The tool packages every result into a single ZIP file for download, and skips any file that fails to decode so the rest of the batch keeps going.
Live Preview with Size Badge
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The preview updates in real time as you change dimensions, fit method, rotation, or flipping, and a small badge shows the exact output width and height. After resizing, you also see how much smaller (or larger) the new file is compared to the original.
Drag, Drop and Paste
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Drop an image straight from your file explorer, click to browse, or press Ctrl+V to paste a screenshot directly from your clipboard. The drop area highlights when a file is dragged over it.
Who Is This Tool For?
Social Media Managers
Resize photos to exact platform sizes for Instagram, Facebook, Twitter, LinkedIn, Pinterest, and YouTube using built-in presets.
Web Developers
Resize images to the exact pixel dimensions your layout needs, convert to WebP, and trim file sizes for faster page loads.
Photographers
Batch resize photos for client delivery, create web-friendly copies, and remove personal metadata before sharing online.
Bloggers and Content Creators
Resize featured images, thumbnails, and in-post images to match your site's layout without opening heavy editing software.
E-commerce Sellers
Resize product photos to marketplace-specific dimensions for Amazon, Etsy, eBay, and Shopify listings.
Graphic Designers
Quickly resize assets for different deliverables across social media, print, and web with precise pixel control.
UI/UX Designers
Resize mockup screenshots and interface assets to exact dimensions for documentation, handoff, and presentation decks.
Email Marketers
Use Target File Size mode to fit newsletter images under email size limits without guessing quality settings.
Students
Resize images for homework, presentations, and thesis documents. The Passport Photo and A4 presets are handy for official submissions.
Teachers and Professors
Resize images for course materials, lecture slides, and online learning platforms that require specific image dimensions.
Freelancers
Batch resize client deliverables with consistent dimensions and format as part of your daily workflow.
Print Designers
Resize images to print-ready dimensions like A4 at 300 DPI. Use Fit mode with a white background for exact canvas sizes.
Video Editors
Resize thumbnails and overlay graphics to match video resolution using HD, Full HD, or 4K presets.
Game Developers
Resize sprites, textures, and interface assets to exact pixel dimensions, or use percentage mode to scale assets for different screen densities.
Real Estate Agents
Resize property photos to meet listing platform requirements so they upload faster to MLS and property websites.
HR and Recruiters
Resize headshots and team photos for job portals, company intranets, and applicant systems that require specific image dimensions.
Non-Profit Workers
Resize images for donation pages, newsletters, and grant reports without needing design software.
Architects and Engineers
Resize site photos and reference images for project reports, drawing overlays, and client presentations at exact dimensions.
Marketing Teams
Batch resize campaign assets across social media, email, and web banners with consistent dimensions and quality.
Podcast Hosts
Resize cover art and episode thumbnails to the exact dimensions required by Spotify, Apple Podcasts, and YouTube.
Small Business Owners
Resize logos, product photos, and banner images for your website, social profiles, and business listings without hiring a designer.
Event Planners
Resize event photos and promotional images for invitations, social media announcements, and venue websites.
Journalists
Resize photos for articles and publishing platforms that enforce specific dimensions and upload size limits.
App Developers
Resize app icons, splash screens, and promotional screenshots to the exact dimensions required by app stores.
Supported File Types
| Format | Input | Output | Notes |
|---|---|---|---|
| PNG | Yes | Yes | Lossless. Keeps transparency. Best for graphics and screenshots. |
| JPEG | Yes | Yes | Adjustable quality slider. Best for photos. Does not keep transparency. |
| WebP | Yes | Yes | Adjustable quality slider. Modern format, usually the smallest. Keeps transparency. |
| BMP | Yes | No | Accepted as input. Saved out as PNG, JPEG, or WebP. |
| GIF | Yes | No | Accepted as input. Only the first frame is processed. Saved out as PNG, JPEG, or WebP. |
Tips for Best Results
Shrink, do not enlarge
Resizing an image down keeps it looking sharp. Enlarging beyond the original size will look softer because new pixels have to be invented. Start with the largest source you have.
Pick WebP for the smallest file
WebP usually produces noticeably smaller files than JPEG at the same visual quality, and it keeps transparency too. Pick WebP from the format dropdown for the best size savings.
Keep aspect ratio locked
Leaving the lock on prevents your image from being stretched or squished. The other dimension is calculated automatically. Only turn it off when you need exact custom dimensions.
Use Target File Size for upload limits
Many email and upload forms cap file sizes. Switch to Target File Size mode, type the limit in KB, and let the tool find the right quality automatically.
Use presets for social posts
Preset mode covers 18 ready-made sizes for Instagram, Facebook, Twitter, YouTube, LinkedIn, Pinterest, WhatsApp, plus HD, Full HD, 4K, A4 at 300 DPI, and a passport photo.
Use Fit mode for fixed canvas sizes
When you need an exact canvas like 1080x1080 but your image is a different shape, Fit mode adds a background color of your choice around the image instead of cropping or stretching it.
Use Cover mode for thumbnails
Cover mode fills the exact dimensions by scaling up and cropping the overflow, which is perfect for thumbnails and profile pictures where you want the whole frame filled.
Batch for consistency
When prepping images for a website or campaign, use the Batch tab to resize many files with identical settings in one go. Grab them all in a single ZIP.
Paste screenshots directly
Press Ctrl+V to paste a screenshot straight from your clipboard. There is no need to save it to a file first.
Privacy is built in
Camera details, GPS coordinates, capture date, and other personal metadata are removed during resizing, which is handy when you share photos publicly and want to keep that information private.
Privacy & Security
This tool runs 100% in your browser. Your files stay entirely on your own device. Nothing is uploaded, nothing is shared, and no server, advertiser, or third party has access to your files.
If a tool saves your work on your own device, you can remove it at any time using the Clear All button. Some tools rely on an external service to return their result; in those cases, only the minimum data required for the request is sent, and never your files or content. Any ads shown on this page run in an isolated frame and cannot read, touch, or transmit anything you upload, paste, type, or download here. Advertisers may see standard visit information like your IP address and which page you're on, as described in our Privacy Policy, but your data itself stays fully under your control.
