Compress PNG Online Free
Reduce PNG size without losing quality — transparency preserved, no upload, no account.
Compress PNG FreePNG files only — transparency preserved, no quality loss.
Compress PNG files online for free without losing quality or transparency. PNG images can often be reduced by 30–70% without losing visual quality — no upload, no account, everything runs in your browser.
Compress PNG without losing quality — lossless and transparent
Compressing PNG does not mean reducing quality. PNG is lossless — and the right compressor reduces file size by optimizing how data is stored, not by removing visual information. PNG images can often be reduced by 30–70% without losing visual quality. The pixel content, sharpness and color accuracy of the output match the source exactly. Transparency is fully preserved — no alpha channel is discarded, no pixel is filled with white.
This PNG compressor runs entirely in your browser. No PNG file is uploaded to any server. Your logos, UI assets, icons and design files stay on your device throughout the entire compression process. No account required, no daily limit, no watermark — compress as many PNG files as you need, completely free.
Ideal for designers, developers and anyone working with PNG graphics. Compress logos before adding them to websites, reduce icon sprite sizes, optimize UI component images before deployment, shrink PNG screenshots for documentation. Batch compress images and download all results as a ZIP in one session.
You can also convert PNG to WebP for even smaller web files, compress all image formats, or compress JPG files — all free, all in-browser.
- 1Upload your PNG files
Drag and drop one or more PNG files onto the upload area, or click to browse. No file size limit — all processing runs locally in your browser with no upload to any server. Transparency in source files is detected and preserved automatically.
- 2Compress without quality loss
Click "Compress All". The compressor processes all files in parallel directly in your browser — no upload, no server, fully private. PNG output is optimized for minimum file size while preserving the full lossless quality and alpha channel of each source file.
- 3Download compressed PNG files
Each compressed file shows the original size, output size and savings percentage. Download individually or click "Download All" for a ZIP archive. The compressed PNG files are ready to use in any web project, design tool or platform.
Best use cases for compressing PNG files
Compress PNG for web — logos, icons and UI elements
Perfect for ecommerce, social media, and marketing teams. PNG is the standard format for web graphics that need transparency: logos, navigation icons, UI buttons, badges and overlays. Compressing these files before deployment reduces page weight without changing how any element looks or behaves. PNG images can often be reduced by 30–70% without losing visual quality — meaning a 200 KB logo file compresses to 60–140 KB with pixel-identical output and transparency fully intact.
Compress transparent PNG — alpha channel preserved
Transparent PNG files are used everywhere in design: cutout product images, watermarks, sticker graphics, avatars, app icons. Compressing these files without preserving the alpha channel is useless — the result would have a white or colored fill instead of transparency. This compressor keeps the full alpha channel intact, including semi-transparent edges and gradients. Compress transparent PNG assets for your website, app or design system with confidence that every transparent pixel stays transparent.
Reduce PNG size for design deliverables and documentation
Design files, wireframe exports, UI specifications and documentation screenshots are typically delivered as PNG for quality and clarity. These files are often large — a full-page design screenshot can be 3–8 MB. Compressing PNG deliverables reduces file sizes for sharing, reduces storage in project management tools and keeps design system asset libraries manageable. Batch compress PNG assets before adding them to Confluence, Notion, Figma exports or client delivery packages.
Optimize PNG images for faster websites
PNG files on websites — hero images with transparency, product overlay graphics, icon sets — contribute significantly to page weight when uncompressed. Reducing PNG sizes by 30–70% before deployment reduces total page weight, improves load time and contributes to better Core Web Vitals scores. For developers handling multiple PNG assets across a site or application, batch compression with ZIP download saves significant manual time compared to compressing files one by one.
Why this PNG compressor is better
Lossless compression, transparency preservation, and privacy-first processing — built for design workflows.
Reduce PNG size without losing visual quality
PNG is a lossless format — and compressing PNG does not have to mean reducing quality. This tool applies optimized compression algorithms that reduce PNG file size by reorganizing and encoding data more efficiently, without removing any visual information. PNG images can often be reduced by 30–70% without losing visual quality. The output is pixel-identical to the source at standard quality settings, with a significantly smaller file size.
Alpha channel intact — no white fill, no quality loss
PNG is the standard format for images with transparent backgrounds — logos, UI elements, icons, cutouts and overlays. This compressor preserves the full alpha channel in every output file. No transparent area is filled with white, no edge is altered, no semi-transparent pixel is changed. Compress your transparent PNG assets with confidence that the output will work identically to the source on any background color.
Your PNG files never leave your device
All compression runs locally in your browser using JavaScript and the Canvas API. No PNG file is uploaded to any server, transmitted over the network or stored anywhere. The tool works without an internet connection after the initial page load. This makes it safe for compressing confidential design assets, client logos, UI components under NDA and any content that cannot touch a third-party service.
Questions about PNG compression
Yes — completely free. No account, no payment, no watermark, no daily limit. Compression runs in your browser so there are no server costs.
No — when done correctly. PNG is lossless, and this compressor reduces file size by optimizing how data is encoded, not by removing visual information. PNG images can often be reduced by 30–70% without losing visual quality. The output is visually identical to the source.
Yes — fully. The alpha channel is preserved in every compressed output file. No transparent pixel is filled with white, and no semi-transparent edge is altered. Your logos, icons and cutout images work identically after compression.
Yes. This compressor specifically preserves the alpha channel. Upload your transparent PNG files, compress and download — transparency is intact in every output file.
PNG images can often be reduced by 30–70% without losing visual quality. Results vary by image content: flat-color graphics and icons typically compress more than complex photographic PNG files.
Yes. Upload any number of PNG files and click "Compress All". All files are processed in parallel in your browser. Download individually or use "Download All" for a ZIP archive.
Yes. All compression runs locally in your browser — your files are never uploaded to any server, never stored, and never accessible to anyone else.
Yes. Open the tool in Safari (iPhone) or Chrome (Android), upload PNG files and download the compressed results. No app installation required.
This tool processes files locally in your browser — no upload, no server, no daily limit, always free. TinyPNG uploads your files to their cloud and restricts free usage. For privacy and unlimited use, this tool is the better choice.
Ready to compress your PNG files?
Compress PNG Free