What is PNG Compressor?
Re-encode PNG graphics in your browser and inspect the actual size difference. PNG is lossless, so the result depends on the browser encoder and image.
Select PNG files and press Compress to re-encode them locally. Compare the result size; lossless PNG re-encoding does not always reduce file size.
How to use this tool
- 1
Choose PNG graphics or screenshots.
- 2
Re-encode the files as lossless PNG copies.
- 3
Check the actual size comparison; keep the original if an output is larger.
Features
- Lossless PNG output preserves image pixels
- Batch processing and local previews
- Shows the actual size change rather than promising a reduction
Example
A screenshot is re-encoded as PNG; if it is larger, keep the original instead.
Frequently asked questions
Why did my PNG get larger?+
The browser PNG encoder may not match the original optimization. The tool keeps the result transparent and reports the actual size change.
Is PNG quality adjustable?+
PNG encoding is lossless, so the quality slider does not apply. Use the output comparison to decide whether to keep the re-encoded file.
About this png compressor
PNG Compressor is part of itotii’s free collection of browser-based utilities. It is designed for a quick workflow: find the tool, complete the task and keep control of your files and data.
Output depends on your input and browser support. Review the result before using it in a published or important document.