PixSip
Overview
PixSip is a free image compressor that runs entirely in your browser. Drop JPG, PNG, WebP, AVIF or HEIC files and get smaller versions back without uploading anything: compression happens locally with WebAssembly builds of the open-source MozJPEG, OxiPNG, libwebp, libavif and libjxl encoders, and the tool keeps working offline once the page has loaded. There is no quality slider to guess at; PixSip ships one quality setting calibrated against TinyPNG on a 20-image benchmark. Flip one switch to also convert your images to AVIF, JPEG XL, WebP, JPG or PNG, each output shown with its own size and download button. The free plan handles batches of up to 20 images (10 MB each), strips metadata automatically, offers a before/after Compare view at 1:1, and downloads the whole batch as a ZIP. No signup, no watermark, no ads.
Key Features
- Local compression with MozJPEG, OxiPNG, libwebp, libavif and libjxl via WebAssembly
- Batch of up to 20 images with ZIP download and 1:1 Compare view
- Optional conversion to AVIF, JPEG XL, WebP, JPG or PNG
Best For
Users who want quick, private batch compression of JPG, PNG, WebP, AVIF or HEIC files.
Pros & Cons
Cons
- Single quality preset with no slider; photo PNGs are palette-reduced unless High quality is chosen
- Free tier limited to 20 files and 10 MB each
- Benchmarks are vendor-run; paid plan prices not confirmed on the fetched page
Pulse Verdict
Editorial review by SEODataPulse · Editorial rating: 3/5 · Updated
This is an editorial assessment, not an average of customer ratings.
“A browser-based image compressor and converter with batch ZIP output and a before/after view. It states files are not uploaded and the tool works offline after loading. There is no quality slider, so users cannot tune output.”
Pricing
Freemium (Pro $2.90/mo, Ultra $5.90/mo)
Pricing changes often — confirm current plans on the official site.