Common questions about Image Resizer PC — the free, offline Windows app that resizes and compresses images to an exact KB target, with nothing uploaded.
Download for Windows and run the single .exe — no install, no .NET.
If you see "Windows protected your PC," click More info → Run anyway.
Set your target in KB, pixels, or cm + DPI, check the preview, and save.
About the app
Image Resizer PC is a free, offline, portable Windows app (one .exe) that resizes and compresses images. Its signature trick is hitting an exact file size in KB automatically. These are the questions people ask most before and after downloading it.
Sizes, formats, and quality
Below you'll find the practical answers — the real KB caps for popular exams, which format to pick, and an honest take on how small you can go before quality suffers.
Yes, completely free to download and use, with no trial, no account, and no paywalled features. We don't invent download counts or fake reviews — just the tool.
Is it offline, and does it upload my files?
It's fully offline. All processing happens on your own PC and nothing is ever uploaded. You can even run it with Wi-Fi off and everything still works.
How do I resize an image to an exact size in KB, like 50 KB or 20 KB?
Type the number in the KB field. The app searches for the best quality that lands at or under your target, downscaling pixels only if needed. The preview shows the KB result before you save.
Which image formats does it support?
JPG, PNG, WebP, and BMP. For passport and exam uploads, JPG is usually required, so it's the safe default. Use PNG for sharp edges or transparency.
Why does Windows show "Windows protected your PC"?
The app is new and not yet code-signed, so SmartScreen is cautious. Click More info → Run anyway. It's a reputation warning, not a virus alert, and the app is fully offline.
Can it make a passport-size photo of 3.5×4.5 cm?
Yes. Switch to cm + DPI, enter 3.5×4.5 cm at 300 DPI, and it computes the pixels for you (about 413×531 px). Use center-crop to fit an exact frame. For max KB, check your specific portal — DS-160 is about 240 KB, OCI about 500 KB.
What photo and signature size does my exam portal want?
Common caps: SSC and IBPS photo 20–50 KB, signature 10–20 KB; RRB NTPC signature max 30 KB; UPSC photo 20–200 KB, signature 20–100 KB; GATE photo 5–200 KB, signature 4–30 KB; TNEA photo and signature 20–50 KB. Most want JPG. If your cap isn't here, check your portal's exact requirement.
How do I get a signature down to 10–20 KB without it looking terrible?
Resize to the portal's pixel size (often 140×60 px) first, target the top of the allowed KB range, and start from a clean scan. Some softening at 10–20 KB is unavoidable — we won't claim otherwise — but these steps keep it legible.
Can I resize a whole folder at once? Is there a file limit?
Yes — drag in a folder or select multiple files, set one target, and the whole batch runs together. There's no file-count limit.
Will resizing to a small KB reduce quality?
Some, yes, especially at very small targets. The honest promise is the best quality that still fits your size, not "no quality loss." Aim for the highest KB your rule allows to stay sharp.
Do I need to install it or have .NET?
No. It's a single portable .exe that runs without an installer and without the .NET runtime on Windows 10/11 64-bit. You can keep it on a USB stick.
Does it add a watermark or show ads?
No watermark and no ads. Your saved image is clean, and there's no telemetry tracking what you do.
Can I resize by centimetres and DPI instead of pixels?
Yes. Enter the size in cm and the DPI, and the app converts it to pixels automatically — handy for print and official photo specs.
What's the difference between keep aspect ratio and center-crop?
Keep aspect ratio preserves the whole image without stretching. Center-crop fills an exact box by trimming edges — use it when a portal demands a precise frame and your photo isn't that shape.
Get it
Download Image Resizer PC
A single portable .exe — no installer, no .NET to set up. Free, offline, no account.
Image Resizer PC