Increase Image Size in KB or MB

Increase image size in KB or MB without losing quality, or enlarge your photo to bigger pixel dimensions. Free, instant and 100% private — everything is 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 raise a photo's file size to a target KB or MB, or enlarge its dimensions in pixels

Upload Your Image

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

Set Your Target Size in KB or MB

To increase image size in KB or MB, enter the target file weight you need — for example 100KB or 2MB — and the tool raises the file to match. To make the photo physically bigger instead, switch to dimensions and enter the width and height you need in pixels, centimetres 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.

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 heavier file to clear 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 and MB File Size Control
Targeting 50KB, 100KB, 200KB or 1MB? Enter your number and the tool increases the image size in KB or MB as close to that target as possible — landing just under it, 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 in KB or MB 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.

When You Need to Increase Image Size in KB

The most common reasons people raise a photo's file size.

Government Portals and Online Applications

Passport, visa, PAN card, admission and recruitment portals often reject a photo that falls below a minimum file size — commonly 20KB, 50KB or 100KB. Enter the minimum the form asks for and upload a file that clears the check on the first attempt.

ID and Document Photos

Scanned signatures, ID cards and passport photos are frequently too light after compression by a phone or scanner app. Increase the image size in KB to meet the specification without changing how the photo looks or reshooting it.

Printing and Display

A photo that is too small in pixels prints blurry and looks soft on large screens. Switch to dimension mode to enlarge the width and height, then export at the size your printer or display needs.

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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 in KB or MB?

Upload your photo, enter the target file size you need in KB or MB, and download. If you need the photo to be physically bigger instead, switch to dimensions and enter the width and height. 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 and MB refer to how much storage the file takes up. Dimensions refer to how large the photo is in pixels. Increasing the size in 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 to an exact number?

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 without going over. For a 100KB target you will typically land around 95–100KB, which clears any minimum-KB validation check.

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.

Where is increasing image size in KB or MB typically required?

Most often in online applications and government portals — passport, visa, PAN card, admission and recruitment forms usually set a minimum file size between 20KB and 200KB and reject anything lighter. It also comes up for scanned signatures and ID documents that a phone or scanner compressed too aggressively, and for photos that need to be enlarged before printing. In each case the fix is the same: set the target size in KB or MB the form asks for, and download the result.

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.

Increase Image Size in KB or MB