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A side-by-side comparison of two browser-based image optimization tools.
| Feature | ImageResizer Studio | Squoosh |
|---|---|---|
| Processing | In-browser (WASM) | In-browser (WASM) |
| Privacy | Images never leave your device | Images never leave your device |
| Compression | WASM codecs with quality control | Multiple codecs (MozJPEG, OxiPNG, WebP, AVIF, JXL) |
| Resize Formats | JPEG, PNG, GIF, WebP, HEIC | JPEG, PNG, WebP, AVIF, JPEG XL |
| Unit Support | px, %, in, cm, mm | Pixels only |
| Batch Processing | Unlimited | No (single image only) |
| Crop | Yes (aspect-ratio presets) | No |
| Pricing | Free (no account needed) | Free and open-source |
Both tools take the same privacy-first approach. ImageResizer Studio and Squoosh process images entirely in your browser using WebAssembly. Your files never leave your device — there is no server upload and no data retention.
Squoosh is a Google-built progressive web app (PWA), so you can install it and use it offline. ImageResizer Studio is also browser-based but runs as a standard web application. Both are equally private.
Squooshoffers significantly more codec options: MozJPEG (best JPEG compression), OxiPNG (lossless PNG), WebP, AVIF, and JPEG XL. It also has a visual diff slider so you can compare original vs compressed output side-by-side. This makes it the power user's choice for codec experimentation.
ImageResizer Studio uses JSquash WebAssembly codecs with a simpler quality slider. While the compression is solid, it does not offer the same level of codec granularity as Squoosh. However, it provides target file-size compression (resize to 20KB–1MB) which Squoosh does not.
Squoosh supports more output codecs including AVIF and JPEG XL — two next-generation formats with superior compression. However, it does not support HEIC as an input format.
ImageResizer Studiosupports JPEG, PNG, GIF, WebP, and HEIC for resize, crop, and format conversion. It includes HEIC input support (Apple's default photo format), which Squoosh does not handle. If you need AVIF or JPEG XL output, Squoosh is the better choice.
ImageResizer Studio supports 5 unit types: pixels (px), percent (%), inches (in), centimeters (cm), and millimeters (mm). This makes it useful for both web design (px and %) and print workflows (in, cm, mm at 300 DPI).
Squoosh only supports pixel-based resizing. You specify target width and height in pixels. There is no way to resize by physical dimensions or percentage, which limits its usefulness for print preparation.
ImageResizer Studio offers unlimited batch processing — you can resize and compress as many images as your browser can handle in one session.
Squoosh processes a single image at a time. There is no batch mode. If you have 50 images to compress, you need to open and process each one individually, which makes it impractical for large volumes.
Both tools are completely free. Squoosh is open-source and built by Google. ImageResizer Studio is free for all features — no account required, no file count limits, no watermarks.
Choose ImageResizer Studio if you need batch processing, physical print units (in, cm, mm), HEIC support, or a simpler UX for everyday resize and compress tasks.
Choose Squoosh if you want to experiment with advanced codecs (MozJPEG, OxiPNG, AVIF, JPEG XL), need a visual diff slider for quality comparison, or want an offline PWA. Be aware that it processes one image at a time and offers no unit conversion.
Ready to try it? Resize an image now or resize a WebP to see the difference.
It depends on your needs. ImageResizer Studio offers 5 unit types (px, %, in, cm, mm), batch processing, and HEIC support. Squoosh offers more advanced codec options (MozJPEG, OxiPNG, WebP, AVIF, JPEG XL). Choose ImageResizer Studio for batch, units, and easier UX; choose Squoosh for advanced codec experimentation.
Yes, Squoosh is completely free and open-source, built by Google. ImageResizer Studio is also completely free with no account required. Both tools cost nothing.
No, Squoosh does not support HEIC/HEIF (Apple's photo format) as an input format. ImageResizer Studio supports HEIC for resize, crop, and format conversion.