Squoosh vs MiniPx: Privacy, Speed, and Features Compared

By Gaurav Bhowmick·May 5, 2026·7 min read

Squoosh and MiniPx share a philosophy: your images should never leave your device. Both compress entirely in the browser. But they take very different approaches to the experience. Squoosh is a power tool. MiniPx is a fast tool. Here is an honest look at both.

What they have in common

Unlike TinyPNG, iLoveIMG, or Compressor.io, neither tool uploads your files to a server. Both use browser APIs and WebAssembly to process images locally. Your photos stay on your device, and both work without an internet connection after the initial page load.

For anyone compressing sensitive documents, identity photos, or confidential files, both are safe choices.

Side-by-side comparison

Feature

Squoosh

MiniPx

Built by

Google Chrome team

Independent developer

Processing

WASM codecs in browser

Canvas API in browser

Batch support

No (one at a time)

Yes (unlimited)

Presets

None (manual controls)

Smart, Balanced, Tiny

Visual comparison

Side-by-side slider

Before/after file sizes

Output formats

JPEG, PNG, WebP, AVIF, JPEG XL

JPEG, PNG, WebP

Resize

Yes

Target file size

Yes (50KB, 100KB, etc.)

HEIC input

Yes

PWA / offline

Yes

Mobile usability

Difficult (slider UI)

Good (tap-friendly)

Where Squoosh wins

Squoosh gives you granular control. You can pick from multiple codecs (MozJPEG, OxiPNG, WebP, AVIF, JPEG XL), adjust quality with precision, tweak chroma subsampling, set effort levels, and compare original vs compressed side by side with a visual slider.

If you are a developer experimenting with codecs to find the exact quality/size tradeoff for a specific image, Squoosh is excellent for that kind of exploration. It is also the only browser-based tool that supports JPEG XL encoding.

Where MiniPx wins

MiniPx is built for getting things done fast. Drop images, pick a preset, download. The presets (Smart, Balanced, Tiny) handle quality decisions for you. Target file size options like compress to 100 KB solve specific problems like government form submissions.

Batch compression is a big practical advantage. When you need to shrink 20 product photos for an e-commerce listing, doing them one at a time in Squoosh is painful. MiniPx handles the whole batch at once.

MiniPx also accepts HEIC files (iPhone photos) as input, which Squoosh does not support.

Mobile experience

This is where the tools diverge sharply. Squoosh's comparison slider is designed for desktop — dragging a divider across an image to compare before and after. On a phone screen, that interaction is awkward. The codec selection panels also get cramped on small screens.

MiniPx was designed with mobile in mind. Buttons are sized for touch, the workflow is linear (upload, configure, download), and there is no fiddly slider. If you are compressing photos on your phone for a form submission, MiniPx is the smoother experience.

The verdict

Use Squoosh when you want to experiment with codecs and fine-tune compression for a single image. Use MiniPx when you want to quickly compress one or many images with sensible defaults, especially on mobile or when you need a specific target file size.

Both are free, both are private, and both are good. It comes down to whether you want control (Squoosh) or speed (MiniPx).

Frequently asked questions

Is Squoosh made by Google?

Yes. Squoosh was built by the Google Chrome team as a WebAssembly demo. It is open-source on GitHub. However, development has slowed significantly since its initial release, and Google does not maintain it as an active product.

Can Squoosh handle batch compression?

No. Squoosh only processes one image at a time. If you have 20 product photos, you process each one individually. MiniPx supports batch compression with no file count limit.

Which tool is better for beginners?

MiniPx is simpler. Drop an image, pick a preset (Smart, Balanced, or Tiny), download. Squoosh gives you manual controls for codec selection, effort levels, and chroma subsampling, which can be overwhelming if you just want a smaller file.

Does Squoosh work offline?

Yes. Squoosh is a Progressive Web App that works offline after the first visit. MiniPx also works offline. Both tools process images entirely in your browser without server communication.

Which produces better compression?

Squoosh can produce slightly smaller files (5-15%) because it uses MozJPEG via WebAssembly, which is more optimized than the native browser JPEG encoder. For most practical use, the difference is not visible or meaningful for page load times.

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TinyPNG vs MiniPx: Which Compressor Should You Use? →Best Free Image Compressors in 2026 →Next-Gen Image Formats: AVIF, WebP, and Beyond →

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