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Increase Image Size

Enlarge your photo to a target KB or bigger pixel dimensions — free, instant, and 100% private, all processed in your browser.

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100% Free & no login required. Your images never leave your device.

How It Works

Step-by-step guide to enlarge a photo's dimensions or boost its file size to a target KB

Upload Your Image

Select one or more JPG, JPEG, PNG, or WebP files. You can upload up to 12 images at once — no account or sign-up needed to get started.

Set Your Target Size

To increase image size in KB, enter your target file weight (e.g. 100KB) and the tool raises it to match. To increase the photo's physical size, switch to dimensions and enter the width and height you need in pixels, cm, or inches.

Download Your Enlarged Photo

Preview the result instantly, then download. Every photo size increase happens locally in your browser — nothing is ever sent to our servers.

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Why Choose Imresizer?

Fast, secure, and completely free image resizing

  • 100% Private — Images Stay on Your Device

    Your photos never leave your device. All processing runs entirely in your browser, making this the safest way to increase image size — especially for passport photos, ID scans, or sensitive documents.

  • Two Ways to Increase Image Size

    Need a bigger file for a portal's minimum KB requirement? Or a larger photo in pixels? You can do both — switch between KB-based and dimension-based size increase without leaving the page.

  • Precise KB File Size Increaser

    Targeting 50KB, 100KB, or 200KB? Enter your target and the tool increases the image size in KB as close to that number as possible — landing just under your target, usually within a few KB.

  • Bulk Photo Size Increase

    Process one photo or up to 12 at once — useful when a form or portal requires several documents to meet the same minimum file size.

  • JPG, PNG & WebP Supported

    Upload JPG, PNG, or WebP — the formats accepted by virtually every portal and form. You can also convert between formats on export, giving you full control over the final output.

  • Free, No Login Required

    No account, no watermarks, no hidden fees. Increase image size as many times as you need — full functionality, always free.

  • Works on Any Device

    Open it on your phone, tablet, or desktop — no app download required. Take a photo from your camera roll and increase its size right from your mobile browser.

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Testimonials

What Our Users Say

Trusted by thousands of users worldwide since 2015

“
I needed to increase my passport photo's file size to meet a 100KB minimum. First try, worked perfectly. Saved me a trip to a photo shop.
“
The photo size increase was exactly what I needed for my visa application. Super simple and it didn't ask me to create an account.
“
I was worried about uploading my ID photo to a random website, but this does everything locally. That privacy angle is a big deal.
“
Hit the target KB on the first try. Use it every time I submit documents online.
“
Finally a tool that actually lets you increase image size in KB without weird compression artifacts. The quality stays clean.
“
Used this for a college application that required photos above a certain KB size. Worked without a hitch and downloaded instantly.
“
I needed a bulk image size increase for 8 documents at once. Processed all of them in one go. Really good tool.
“
Easy, fast, and free. The three things every online tool should be but rarely is.

Frequently Asked Questions

Everything you need to know about image resizing

How do I increase image size?

Upload your photo, choose whether you want to increase the image size in KB (file weight) or by pixel dimensions (width and height), enter your target, and download. The tool handles both types of image size increase — pick whichever matches what the portal or form is asking for.

What is the difference between increasing KB and increasing dimensions?

KB refers to how much storage the file takes up. Dimensions refer to how large the photo is in pixels. Increasing KB makes the file heavier without visually changing the image. Increasing dimensions makes the photo physically bigger. They solve different problems — many people confuse the two.

How do I increase image size in KB?

Upload your image, enter your target file size in KB (for example, 100KB), and download. The tool raises the file weight as close to your target as possible — for a 100KB target you'll typically land around 95–100KB, just under the number you set.

Why do portals require a minimum image size in KB?

Many government portals, visa application forms, college admissions systems, and job application platforms reject photos below a minimum KB threshold. The reasoning is usually image quality assurance — very small files are often low-resolution or heavily compressed. Increasing your image size in KB helps it clear those checks.

How do I increase the photo size for a visa or passport application?

Upload your photo, switch to the KB mode, and enter the minimum file size the portal requires — commonly 100KB or 200KB. Download the result and submit. Everything runs in your browser, so your passport or ID photo never gets sent to a third-party server.

How close to my target KB will the result be?

The tool gets the file weight as close to your target as it can without going over. For a 100KB target you'll usually land between 95–100KB. The gap is small enough to clear any minimum-KB validation check.

Can I increase image size without losing quality?

The tool preserves visual quality while raising either the file size or the pixel dimensions. For KB-based increases, it adjusts compression settings so the file gets heavier without introducing visible artifacts. For dimension increases, it scales the photo using a smooth algorithm so edges stay sharp.

Does increasing image size in KB change how the photo looks?

No — a KB-based size increase doesn't change the visible appearance of the image. It adjusts how the file is compressed so the saved file is heavier, while the photo itself looks identical. You can confirm this in the preview before downloading.

Can I increase the size of multiple images at once?

You can upload up to 12 images at once and process them in a single batch. This is useful when submitting multiple documents that all need to meet the same minimum file size requirement.

Which image formats are supported for size increase?

You can upload JPG, JPEG, PNG, and WebP files. You can also convert between formats on export — for example, uploading a PNG and downloading a JPG — giving you full control over the final format and file size.

Are my photos private when I use this tool?

Your images never leave your device. All processing happens entirely in your browser — nothing is uploaded to any server. This matters especially when you're working with ID photos, passport scans, or other sensitive documents.

Is this tool free to use?

The core tool is completely free — no account, no watermark, no time limits. There's an optional subscription for an ad-free experience and advanced AI-powered features, but increasing image size in KB or by dimensions is always free.

What other tools does ImResizer offer?

Beyond photo size increase, ImResizer lets you compress images below a KB limit, resize by exact pixel dimensions, crop, rotate, flip, and create passport or visa photos. All tools are free and process images locally in your browser.
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