PNG Compressor
PNG is lossless, so savings are modest — try our WEBP compressor for deeper cuts. Drop a PNG file below and drag the quality slider until the size looks right.
Drop files, or click to browse
PNG files only — any size, any number of files
Frequently asked questions
How much smaller will my PNG get?+
It depends on the source image and the quality you pick — photographic images with lots of detail compress less than simple graphics. Try 70–80% quality as a starting point.
Does compressing change the image dimensions?+
No — this tool only affects file size and visual quality, never the pixel dimensions. Use the Resize tool if you also want smaller dimensions.
Is this a lossy or lossless process?+
PNG compression is lossless, so gains are modest. For much smaller files, convert to WEBP or JPEG first.
Is there a maximum file size?+
There's no fixed upload limit — Orbfile isn't uploading anything. The practical ceiling is your device's own memory, which comfortably handles even large, high-resolution photos.
How do I compress a PNG?+
Drop your PNG into the box above and drag the quality slider — the estimated output size updates live, and your download is ready the moment you're happy with the tradeoff.
About PNG
What is PNG?
PNG is a lossless image format built for sharp edges, flat colors, and transparency — think logos, screenshots, and UI graphics rather than photos.
Full PNG format guide →PNG files can balloon quickly, especially with high-resolution source material. Compressing trims the file down to something that uploads faster, loads faster, and takes up less space — without needing to change the format itself.
How it works
- 1
Drop your file in
Drag your image onto the box above, or click it to browse — there's no account to create and no upload to wait on.
- 2
Adjust the slider
Drag the quality slider and watch the estimated file size update in real time.
- 3
Download the result
Your browser processes everything locally and hands you a download link the moment it's done — nothing was ever sent to a server.
Is it private?
Everything happens locally, inside this browser tab. Your image is read from disk, processed with WebAssembly running on your own device, and handed back to you as a download — it's never transmitted anywhere, so there's nothing to intercept and nothing stored on a server.
Common use cases
- Logos and icons
- Screenshots
- Preparing images for a website or online store
- Attaching a photo to an email with a size limit
Supported formats
This is one of many pairings the image toolkit handles. In total it covers:
Other compressors
Format details
About PNG files+
PNG is a lossless image format built for sharp edges, flat colors, and transparency — think logos, screenshots, and UI graphics rather than photos.
PNG (Portable Network Graphics) was created in the mid-1990s as a free, patent-unencumbered replacement for GIF, and it inherited GIF's lossless approach while adding full 24-bit color and an alpha transparency channel. Because nothing is thrown away during compression, a PNG can be re-saved indefinitely without ever degrading — a real advantage for screenshots, diagrams, and anything with text or hard edges, where JPEG's compression tends to introduce visible smudging. The cost is file size: for photographic content, a PNG is typically several times larger than an equivalent JPEG, which is why most photo libraries still default to JPEG and reserve PNG for graphics.
How to open a PNG file
Opens readily in Any web browser, Your operating system's default photo viewer. For real editing, use Adobe Photoshop, GIMP, Affinity Photo.
Good for
- lossless — no generation loss on re-saving
- full alpha transparency
- crisp text and hard edges
Watch out for
- much larger files than JPG for photographic content
Need another format? Try the full Image Compressor, or explore all image tools.