Privacy5 min read
Are Online Image Compressors Stealing Your Photos?
March 1, 2026
Browser-native · WASM-poweredCompress, convert,
Compress, convert,
optimize. without uploads.
A privacy-first toolkit for everyday image work. Drop a file, get a smaller one back. Nothing ever touches our servers because we don’t have any.
100% freeNo sign-upWorks offline
Local-only
0.22s
BEFORE · 387 KB
AFTER · 95 KB
Dimensions512 × 512
FormatPNG → PNG
Time0.22 s
Shink-75%
8 tools
Everything your images need.
Professional-grade tools that run entirely in your browser. No installs, no accounts, no uploads.
Hot
Image compressor
Shrink PNG, JPG and WebP up to 90% without visible loss.
PNGJPGWEBP
Convert format
Move between 11 image formats in one click.
AVIFBMP
HEIC to JPG
Decode iPhone photos to a format every app accepts.
HEICHEIF
Remove EXIF data
Strip GPS, camera info, and all hidden metadata from images.
PrivacyEXIFGPS
Crop & resize
Free crop or fixed presets for every social network.
1:116:9
Watermark
Apply text or image marks in batch with one preset.
Batch
Image to Base64
Inline images directly into your stylesheet or HTML.
DataURI
Why zeropng
Built different. By design.
Privacy isn't a feature we added. It's the architecture we started with.
01
Zero uploads
Your images never leave your device. Processing happens in-browser via WebAssembly. Verify it yourself in DevTools.
02
Same engines, faster
We use the same libpng, libjpeg-turbo, and libavif engines as professional tools, compiled to WebAssembly for native speed.
03
Offline-ready
Install as a PWA and process images without internet. The app shell and engines are cached after first visit.
04
Always free
No subscription, no account, no hidden fees. ZeroPNG is completely free for personal and commercial use.