Most people want to make images smaller — but sometimes you need to do the opposite. If a form is rejecting your photo because the file is too small, this guide will show you how to increase image size in KB the right way, without ending up with a blurry or pixelated result.
Why would you need to increase image size in KB?
It sounds unusual, but it happens more than you think. Here are the most common reasons people need to increase KB size of a photo:
| Situation | Minimum KB required |
| Government ID / e-KYC upload | 20 KB or more |
| College admission form | 30 KB or more |
| Job portal profile photo | 50 KB or more |
| Scanned document submission | 100 KB or more |
| Professional photo submission | 200 KB or more |
If your image falls below the minimum, the form will reject it — even if it looks perfectly fine on screen. The portal is checking the file size, not how the photo looks.
Why is my image too small in KB?
There are three main reasons your photo might be below the required KB size:
1. It was already compressed
If you received the image via WhatsApp, email, or downloaded it from a website, it may have been compressed automatically. WhatsApp, for example, reduces photo quality significantly before sending.
2. It is a small or low-resolution photo
A photo with very small pixel dimensions — like 100×100 pixels — will naturally have a very low KB size. There is simply less image data to store.
3. You over-compressed it
If you previously used a KB reducer or photo compressor and went too far, you may have shrunk the file below the minimum. This is the easiest situation to fix — just go back to the original file and compress it less.
Important: You cannot add real image data that was never there. If the original photo is low quality or very small, increasing its KB size will make the file larger but will NOT improve how it looks. Always start with the best original you have.
How to increase image size in KB — 4 methods
Method 1: Use an online KB converter tool (easiest)
The fastest way to increase image size in KB is to use an online tool that lets you set a target file size. Instead of entering a lower KB value to compress, you enter a higher one to expand.
Step 1: Go to the tool
Visit photokbconverter.in and open the resize image in KB tool.
Step 2: Upload your photo
Select your image from your phone or computer.
Step 3: Enter a higher KB value
Type the minimum KB size the form requires — for example, 50 KB or 100 KB.
Step 4: Download the result
The tool adjusts the file to meet the target and lets you download it.
Use this tool: Resize your image to any KB size instantly
Tip: Always check the form’s maximum KB limit too. If the form says 20 KB minimum and 100 KB maximum, aim for something in the middle like 50-60 KB.
Method 2: Save at a higher quality setting
If you have the original photo on your phone or camera, re-save or re-export it at a higher quality level. Most phones and photo editors let you choose the quality percentage when exporting as JPG.
For example, in most photo editors:
– Quality 60% might give you 30 KB
– Quality 80% might give you 80 KB
– Quality 95% might give you 200 KB
Higher quality = larger file size = more KB. This is the cleanest way to increase KB without any blurring.
Method 3: Increase pixel dimensions
A larger image in terms of pixels will also be larger in KB. If your photo is 200×200 pixels, resizing it to 400×400 pixels will roughly double or triple the file size.
You can do this in any basic photo editor or even in the Photos app on your phone. Just be careful — upscaling a very small image will make it look blurry, since the software is essentially guessing the extra pixels.
Tip: Upscaling works best when you are going from a reasonably sized image (like 500×500) to a slightly larger one. Going from 50×50 to 500×500 will almost always look pixelated.
Method 4: Change the file format
PNG files are typically larger in KB than JPG files of the same image. If you have a JPG photo that is too small, converting it to PNG will usually increase the file size — sometimes significantly.
| Format | Typical size | Best for |
| JPG | Smaller | Photos, portraits, real-world images |
| PNG | Larger | Graphics, logos, transparent backgrounds |
| BMP | Largest | Uncompressed images (rarely needed) |
This method is reliable but check if the form accepts PNG — many government portals only accept JPG.
How to increase KB size without blurring
The blurring problem happens when you try to make a small, low-quality image much larger. Here is how to avoid it:
Start with the highest quality original
Go back to the source. If you took the photo on a phone, use the original from your camera roll — not a screenshot, not a WhatsApp forward, not a downloaded thumbnail. The original will almost always have enough KB to work with.
Increase KB, not dimensions
If the photo is the right pixel size but just too few KB, adjusting quality settings or using a KB converter tool will increase the file size without touching the dimensions. This avoids blurring entirely.
Use AI upscaling for very small images
If you truly need to enlarge a small photo without blurring, AI-based upscaling tools (like Upscayl or Adobe Firefly) can intelligently fill in detail that normal resizing cannot. These are free tools and produce significantly sharper results than standard upscaling.
Crop and re-export instead of stretching
Sometimes your photo is the right quality but has too much background. Cropping it tightly to the subject and re-exporting at high quality gives you a focused, sharp image — and often hits the right KB range naturally.
Need to resize your image to an exact KB size?
Whether you need to increase or decrease the file size, the easiest way is to use a dedicated tool. photokbconverter.in lets you set any target KB value and converts your photo to match — in seconds.
Resize image in KB: Open photo resizer – Set any KB target — increase or decrease — and download instantly
You can use the same tool to increase KB (enter a higher value) or reduce KB (enter a lower value). No sign-up, no software to install.
Frequently asked questions
Can I increase image size in KB without losing quality?
Yes — if you start with a high-quality original. Increasing KB by reducing compression or saving at a higher quality setting adds file size without degrading the image. What you cannot do is recover quality that was already lost through earlier compression.
Why is my photo being rejected for being too small in KB?
The portal checks the file size, not the visual quality. Even if your photo looks fine on screen, it may be compressed below the portal’s minimum threshold. Use a KB converter to set a target size that falls within the required range.
Does increasing KB size improve photo quality?
Not necessarily. Increasing file size by adjusting compression settings preserves existing quality — it does not add new detail. Think of it like unzipping a file: the content stays the same, it just takes up more space. To genuinely improve quality, you need a higher-resolution original.
What is the best way to increase KB of a photo on mobile?
Open a browser on your phone and visit photokbconverter.in/resize-image-in-kb/ — upload the photo, enter the KB value you need, and download the result. No app needed.
Will changing JPG to PNG increase the KB size?
Yes. PNG is a lossless format and usually produces larger file sizes than JPG for the same image. Converting a JPG to PNG is a reliable way to increase KB size — but always check whether the form or portal accepts PNG files before doing this.
Increasing image size in KB is straightforward once you understand what is actually happening. The key is to start with the best original you have, use a reliable KB converter tool, and target a KB value that fits comfortably within the required range. Follow the steps above and your photo will be accepted first time.