Compress a PNG to 100KB
Choose Target KB and the 100KB preset for a form or portal. The tool aims for an output at or under the maximum when achievable, rather than a byte-perfect file.
Compress a PNG File Online
Choose one PNG, reduce its file size by quality or target size, inspect the measured result, and download it locally with no login or registration.
- Free, no login
- Local processing
- Quality or target KB
- PNG input
PNG compression workspace
One image at a time · processed locally
Source PNG
Compression goal
Keeps the original width unless you enter a smaller value. The tool never enlarges the image.
Your PNG stays in this browser
Preview
How to Compress a PNG
A short path from one PNG file to a measured result you can inspect before downloading.
- Step 1
Choose a PNG File
Choose, drop, or paste one PNG and confirm its original file size and dimensions before changing settings.
- Step 2
Choose Quality or a Target Size
Use Quality for visual control, or Target KB for an upload limit. Target mode uses JPG or WebP and can reduce dimensions when quality alone is not enough.
- Step 3
Compare the Result and Download
Review bytes, dimensions, format, visible detail, and target status, then download the result or adjust one setting and try again.
Compress PNG Files for Common Size Limits
Use these as starting points, not guarantees. Image dimensions, transparency, detail, and output format determine the measured file size.
Reduce a PNG for Email or Upload
For an oversized attachment, try a practical output format first. Lower the maximum width only when the destination does not need the original dimensions.
Make PNG Website Images Smaller
Try WebP only when the destination supports it. Keep PNG when transparency or lossless edges matter more than the smallest possible file.
Compress a PNG Screenshot
Text-heavy screenshots can show artifacts with lossy output. Compare labels, edges, and gradients in the preview before replacing the original.
Keep Transparency or Choose a Smaller Format
Choose the output format before downloading a smaller file that no longer fits the job. PNG, WebP, and JPG make different tradeoffs.
Keep PNG When Transparency Matters
PNG keeps transparent pixels and sharp graphic edges, but a lossless re-encode can save little when the source is already optimized.
Use WebP When Your Destination Supports It
WebP can be an efficient web output and can retain transparency. Confirm that the receiving site, app, or workflow accepts WebP before using it.
Use JPG Only with a Solid Background
JPG cannot keep transparency. Pick a background color in the workspace and inspect flattened edges before using a JPG for a logo, cutout, or overlay.
Do Not Expect Every PNG to Shrink
Fine detail, noise, alpha transparency, dimensions, source optimization, and output encoding all change the final number of bytes.
Check PNG Quality and File Size Before You Download
Use the measured result and the preview together. One setting does not produce the same savings or visible quality for every PNG.
Check the Bytes and Dimensions
Compression changes encoding; resizing changes pixels. A smaller maximum width can save more bytes than extreme quality reduction when the original is larger than its destination needs.
Inspect Text, Edges, and Gradients
Review the areas most likely to expose artifacts, especially screenshots, icons, labels, transparent edges, and smooth gradients.
If the Result Is Larger, Change One Variable
Try a supported smaller output format, lower quality, or a smaller maximum width. Change one setting at a time so you can see what improved the result.
Use Image Resizer for Exact Dimensions
When exact pixels or percentage scaling are the real need, use Image Resizer instead of treating file compression as a substitute for resizing.
PNG Compression Privacy, Formats, and Limits
The tool keeps processing in the browser and states practical boundaries before you choose a sensitive, oversized, or unsupported file.
Processed Locally in Your Browser
The selected PNG is decoded, processed, previewed, and exported in this browser. It is not sent to a processing server.
Supported PNG Input and Output Choices
This page accepts PNG input and can export PNG, JPG, or WebP. Target KB mode uses JPG or WebP because a PNG quality value does not control lossless Canvas output.
Source Metadata Is Not Preserved
Canvas export creates a new output and normally does not copy source metadata. This is not a security-grade claim about metadata removal.
One Image and Browser Limits
The tool processes one PNG at a time and rejects images above 12,000 pixels in either dimension. Very large files also depend on device memory and browser codec support.
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PNG Compression FAQ
Direct answers about PNG size limits, transparency, quality, formats, privacy, and the one-file workflow.
How do I compress a PNG file?
Choose, drop, or paste one PNG, select Quality or Target KB, choose an output format, then compress it. Check the measured file size, dimensions, format, and preview before downloading.
Can I compress a PNG without losing quality?
PNG output is lossless in this tool, but it may not become much smaller. JPG and WebP can reduce bytes more by using lossy encoding, so inspect text, edges, gradients, and transparent areas before replacing the original.
Why is my PNG file still large after compression?
A PNG can already be well optimized, and detailed pixels, transparency, dimensions, and source encoding all affect its size. Try WebP or JPG when the destination allows it, or use a smaller maximum width when the original has more pixels than needed.
Can I compress a PNG to 100KB or 1MB?
Choose Target KB, enter 100 or 1024, and use JPG or WebP output. The tool aims for the highest practical quality at or under the maximum and may reduce dimensions if quality alone is not enough; it does not promise an exact byte count.
Will compressing a PNG keep transparency?
PNG output keeps transparency. WebP can also retain transparency in supported destinations. JPG cannot keep transparent pixels, so this page fills them with the background color you choose.
Does this PNG compressor upload my file?
No. The selected PNG is decoded, processed, previewed, and exported in your current browser. The tool does not send it to a processing server.
What is the difference between compressing and resizing a PNG?
Compression changes the file encoding to reduce bytes. Resizing changes pixel dimensions. This page can set a smaller maximum width, but use Image Resizer when exact pixels or percentage scaling are the main requirement.