Change dimensions and reduce image size in one pass — set both at once, no second tool needed. Free, private and processed in your browser.
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How It Works
Step-by-step guide to change dimensions and reduce the file size in a single pass
Upload Your Image
Select one or more JPG, PNG, or WebP files from your device. You can upload up to 12 images at once for batch processing — no account or installation needed to get started.
Set Both Requirements at Once
Enter the target width and height, then add a maximum file size. Both apply in the same pass — the tool scales the image first, then compresses to meet your limit. This is the step that saves you a round trip through a second tool.
Preview and Download
Check the live preview to confirm dimensions and visual quality before you save. Download instantly — everything runs locally in your browser, so your images are never sent to any server.
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Why Choose Imresizer?
Fast, secure, and completely free image resizing
Resize and Reduce Image Size in One Step
Most tools make you resize first, then compress separately. Here you set the target width, height, file size limit and output format all at once — one upload, one download, done.
100% Private — Stays on Your Device
All processing happens in your browser. Your images are never uploaded to a server, which makes this safe for sensitive files like passport photos, ID scans, and medical documents.
Reduce Image Size Without Guesswork
Set the file size limit your form demands and the tool compresses to land just under it, after scaling to your dimensions. No trial and error, no re-uploading to check whether you cleared the cap.
Bulk Processing Up to 12 Images
Upload a full batch and resize and reduce all images in one go using the same settings. Useful when preparing a set of documents that all need to meet the same dimension and file size requirements.
Free, No Account Needed
Change image size and compress as many times as you need — no login, no watermarks, no hidden limits. An optional subscription removes ads and unlocks AI-powered extras, but the core tool is always free.
JPG, PNG, and WebP Support
Upload images in any of the three most common formats. You can also convert between formats during processing — switching a large PNG to JPG often cuts the file size significantly without a visible drop in quality.
Works on Any Device
Use it from your phone camera roll or your desktop browser — no app download required. The tool is fully responsive and runs on any modern browser on iOS, Android, Windows, or macOS.
When You Need to Resize and Reduce an Image Together
The situations where changing dimensions alone is not enough.
Government Portals and Online Applications
Passport, visa, PAN card, admission and recruitment portals routinely demand both — a photo at exactly 600×600 and under 100KB, for example. Resizing alone will not clear the file size cap and compressing alone will not fix the dimensions. Set both and upload once.
Product Photos and Listings
Marketplace and e-commerce listings enforce fixed dimensions and a file size ceiling at the same time. Batch a full set of product photos through identical settings and export them in one pass.
Email Attachments and Sharing
Inbox and messaging limits reject heavy files. Reduce image size while scaling the dimensions down to what the recipient actually needs to see — both constraints handled together.
Need Only One of the Two?
If you only need to change dimensions, or only need to hit a file size, use the dedicated tool.
Trusted by thousands of users worldwide since 2015
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I had to submit a photo that was exactly 600×600px and under 100KB for a government portal. This did both at once — took about 10 seconds.
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Didn't realize you could set dimensions AND a file size limit in the same tool. Every other site makes you do it in two steps. This just works.
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I process product photos for my Etsy shop and the batch mode is a lifesaver. Changed image size for 10 photos in one go.
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The privacy thing actually matters to me. I was resizing ID documents and really didn't want them uploaded anywhere. Browser-only is the right call.
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Picked the passport preset, added a 50KB limit, and it was done on the first try. No fiddling.
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Fast and simple. I don't need fancy features — just a reliable way to resize and reduce images for email attachments. This does exactly that.
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Free tools usually have a catch. This one genuinely doesn't.
Frequently Asked Questions
Everything you need to know about image resizing
What does it mean to resize and reduce an image?
Resizing changes the image's pixel dimensions — its width and height. Reducing shrinks the file size. Many official forms require both at once: a photo that is exactly 600×600 and under 100KB, for example. This tool lets you resize and reduce image size in a single step instead of using two separate tools.
How do I resize and reduce an image at the same time?
Upload your image, enter your target width and height, then add a maximum file size. The tool scales the image to your dimensions first, then applies compression to meet the limit — all in one pass. You will see a live preview before downloading so you can check the result.
Do I have to set both, or can I use just one?
Both fields are optional. Set dimensions only and the tool changes the image size without compressing. Set a file size limit only and it compresses without touching the dimensions — though if that is all you need, the dedicated reduce tool is a better fit. This page exists for the case where a form demands both at once.
Why do some forms require both a specific size and a KB limit?
Government portals, application systems, and e-commerce platforms often set strict upload rules to standardize storage and processing. Resizing alone doesn't always bring the file under the KB limit, and compressing alone doesn't fix incorrect dimensions. You need both at once — which is what this tool does.
Will changing the image size reduce the quality?
Scaling down dimensions has minimal visual impact when the reduction is moderate. Compression can reduce quality at very aggressive levels, but the tool preserves as much detail as possible while meeting your KB target. The live preview lets you inspect the result before you commit to downloading.
What image formats can I upload and download?
You can upload JPG, JPEG, PNG, and WebP files. You can also convert between formats during processing — for example, converting a PNG to JPG often reduces the file size significantly, making it much easier to hit a tight KB limit without affecting visible quality.
Is it safe to use this tool for ID photos and sensitive files?
All processing runs entirely in your browser — your images are never sent to any server. Nothing is stored, logged, or transmitted. This makes it safe to use for passport photos, national ID scans, medical images, and any document where privacy is a concern.
Can I resize and reduce multiple images at once?
You can upload up to 12 images and process them all in a single batch using the same settings. This is useful when preparing a full set of documents that need to meet the same output requirements — like multiple passport photos or a batch of e-commerce product images.
What are the most common reasons to resize and reduce an image?
The most frequent use cases are: uploading photos to government or university portals with strict size rules, preparing passport and visa photos, compressing images for job applications, optimizing product photos for e-commerce listings, and reducing images for email attachments where inbox size limits apply.
What size presets does the tool include?
Built-in presets cover common use cases including Instagram posts and stories, YouTube thumbnails, Facebook covers, Twitter/X headers, LinkedIn banners, and international passport photo sizes. Select a preset to auto-fill the width and height, then optionally add your own KB or MB limit on top.
Do I need to create an account or pay to use this?
No account or payment is required. You can resize and reduce images as many times as you need, completely free. An optional subscription is available for an ad-free experience and AI-powered features, but the core resize and compress functionality is always free to use.