Zap
Lightning-fast image compression
Shrink PNG, JPG, WebP, GIF, and SVG files by up to 80% without sacrificing visible quality. Batch-process hundreds at once, all on your machine. A native Windows app with no Electron and no bloat, free forever.
Windows 10 (1809+) & Windows 11 • Free forever • Auto-updates
Standalone installers:x64 MSIXARM64 MSIX
ARM64 is for Windows on ARM PCs. Standalone packages don’t auto-update. The .appinstaller above does.
Free, forever
No premium tier, no ads, no tracking.
100% private
Every image is processed locally. Nothing is uploaded.
Native & light
Rebuilt in WinUI 3. No Electron, no bundled browser.
Hundreds of images, one drop
Drag in a whole folder and Zap compresses every file in parallel, spreading the work across your CPU cores. No queues, no waiting, no per-file clicking.
- Drag-and-drop a folder or a hundred files at once
- Hardware-aware parallel compression
- PNG, JPG, WebP, GIF, and SVG in a single batch
- Revert any file to its original instantly
Every byte you save, side by side
Compare the original and the compressed version before you commit. Lossless by default, so you shrink the file size without losing a single visible pixel of quality.
- Side-by-side before/after preview
- Lossless compression with real size savings
- Up to ~80% smaller files
- One-click revert if you change your mind
Tuned to your workflow
Set your default formats, quality, and output behavior once and forget it. Light and dark themes follow your Windows setting, so Zap always feels at home.
- Per-format quality and output settings
- Light, dark, and system themes
- Sensible defaults that stay out of your way
- Automatic updates via App Installer
Everything Zap does
Small, fast, and focused on one job: making your images smaller.
Batch Processing
Compress hundreds of images at once, effortlessly.
Lossless Compression
Shrink file sizes without sacrificing a single pixel of quality.
Drag & Drop
A simple, intuitive interface for quick importing.
Multiple Formats
Supports PNG, JPG, GIF, WebP, and SVG.
Side-by-Side Preview
Instantly preview the before-and-after difference.
Revert to Original
Not happy with a result? Restore the original instantly.
Hardware-Aware
Distributes work across CPU cores for ultra-fast compression.
Privacy First
All processing happens locally, so your images never leave your device.
Automatic Updates
Install via .appinstaller and always stay on the latest version.
Rebuilt as a true native app
Zap used to be a cross-platform Electron app. It's now a ground-up native Windows rewrite that's smaller, faster, and lighter on your machine.
No bundled Chromium
Native on Windows on ARM
Your images stay on-device
No ads, no subscription
Frequently asked questions
Is Zap really free?
Yes, it's 100% free, forever. No premium tier, no ads, no tracking, and no account required.
Which Windows versions are supported?
Windows 10 (1809 or newer) and Windows 11, on both x64 and ARM64. Zap is a native WinUI 3 app, not Electron.
Does it work on Windows on ARM?
Yes, there's a native ARM64 build. Grab the ARM64 MSIX from the standalone installers link by the download button.
Will it update automatically?
If you install via the .appinstaller, yes. Windows keeps it up to date. Standalone MSIX packages are manual installs and don't auto-update.
What formats can it compress?
PNG, JPG, GIF, WebP, and SVG, all in a single batch.
Are my images private?
Completely. All compression happens on your device, and nothing is ever uploaded to a server.
Ready to compress some images?
Download Zap and start shrinking files in seconds. It's free, forever.
Standalone installers:x64 MSIXARM64 MSIX
ARM64 is for Windows on ARM PCs. Standalone packages don’t auto-update. The .appinstaller above does.
By downloading or using Zap, you agree to these terms and policies.