PNG Compressor Online Free – Compress PNG to KB
Compress a PNG image to an exact KB like 100KB, 50KB or 20KB in your browser, or convert it to JPG for an even smaller file. No upload, no signup.
Open Tool
How a heavy PNG is compressed or converted to a small file.
What is ExamFo's PNG Compressor?
PNG files keep sharp edges and transparency, which makes them great for signatures and logos but often heavier than a photo needs to be. ExamFo is a free PNG compressor that runs in your browser, so nothing is uploaded. You can compress PNG to KB and hit a target such as 100KB or 20KB, or convert the PNG to JPG when the form allows it, which usually cuts the size sharply. Set your target, watch the live preview, and download a smaller file in seconds.
Also convert PNG to JPG or PNG to WebP and reduce PNG file size online for a much smaller file.
Open ToolHow to Compress a PNG to KB Step by Step
- Open the tool: Click Open Tool (runs in your browser).
- Add your PNG: Select the PNG image from your device. It stays local.
- Set target KB: Enter a value like 100KB, 50KB or 20KB.
- Pick the output: Keep PNG, or choose JPG for a smaller file when transparency is not needed.
- Download: Confirm the size in the preview and download the compressed file.
PNG Compression Details
| Parameter | Details |
|---|---|
| Target size | Any KB, commonly 100KB, 50KB or 20KB |
| Input format | PNG (also JPG, WebP) |
| Output format | PNG, or JPG / WebP for a smaller file |
| Transparency | Kept if you stay in PNG; a JPG gets a solid background |
| Typical use | Signatures, logos, screenshots, form uploads |
| Privacy | 100% client-side; no file leaves your device |
⚠️ Tip: If your exam form accepts JPG, converting a PNG signature to JPG is usually the fastest way to reach a small target like 20KB.
Why ExamFo PNG Compressor
No Upload, Full Privacy
Your PNG never leaves your device.
Compress PNG to Exact KB
Hit 100KB, 50KB, 20KB or any target you type.
PNG or JPG Output
Keep transparency or switch to JPG for smaller size.
Built-in Crop & Resize
Trim and resize the PNG before compressing.
Batch up to 20 Files
Compress several PNGs at once.
Free & No Watermark
No charges and a clean output file.
Common Problems With PNG Files
- A PNG signature is 300KB or more, well over the form's small limit.
- The form only accepts JPG, but your image is a PNG.
- A screenshot saved as PNG is far heavier than the same image as JPG.
- You need transparency kept, so the file must stay PNG but smaller.
- Other PNG compressors upload your file or add a watermark.
- A logo PNG needs to drop under a KB cap without going blurry.
Related Tools for Exam Form Photo & Signature
Frequently Asked Questions
How do I compress a PNG online free?
Open ExamFo's tool, add your PNG, set a target KB, and download. You can keep PNG or switch to JPG for a smaller file. Nothing is uploaded.
Can I compress a PNG to 100KB or 20KB?
Yes, type any target such as 100KB, 50KB or 20KB and the tool compresses the PNG to it, showing the live size.
Does compressing a PNG keep transparency?
If you keep the output as PNG, transparency is preserved. If you convert to JPG for a smaller file, transparent areas become a solid background.
Why is my PNG so large?
PNG is lossless, so photos and screenshots stay heavy. Converting to JPG usually cuts the size a lot when you do not need transparency.
Is the PNG compressor safe?
Yes, it runs fully in your browser and no file is uploaded to any server.
Does it work on mobile?
Yes, it works on Android and iOS browsers.
Can I compress several PNGs at once?
Yes, add up to 20 files and apply the same target to all of them.
Does it add a watermark?
No, ExamFo never adds a watermark. The output is clean.
How to convert PNG to JPG to reduce size?
Choose JPG as the output format; a PNG usually becomes far smaller as JPG while looking the same on screen.
Can I convert PNG to WebP to compress it more?
Yes, pick WebP output to convert PNG to WebP — WebP is typically smaller than both PNG and JPG.