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iLoveIMG
CloudConvert
Caesium Image Compressor
iLovePDF
ImageOptim
Compressor.io
Compress and compare images with different codecs, right in your browser

Smallpdf
iLovePDF
PDF24
PDF24 - Online PDF Tools
Sejda
61 PDF tools in one place: merge, split, compress, convert, edit, sign, lock and OCR. Runs in your browser, on desktop or phone. Most tools run on your device, so nothing is uploaded. Free plan: 1 PDF export a day. Premium has no limit.
Which is more popular?
Based on our record, Squoosh seems to be more popular. It has been mentioned 203 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | squoosh.app | stackpdf.com |
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What each product offers, as listed by its team.


Possible disadvantages
No features have been listed yet.
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
Web developers, designers, bloggers, and anyone needing to optimize images for the web, particularly those concerned about maintaining image quality while reducing file size.
No analysis of StackPDF yet.
Walkthroughs and reviews on video.
Jumbo Squoosh-o’s Review! #SLIMESTAGRAM #JumboSquooshos
More videos
No StackPDF videos yet. You could help us improve this page by suggesting one.
How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Squoosh and StackPDF. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


The only negative thing about this web app, is that it's not clear which formats are supported in which browsers.
We have no reviews of StackPDF yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


Use Squoosh for an interactive local comparison, your CMS's image pipeline, or a hosted tool such as TinyImage. Choose the processing model that fits the image and your workflow. - Source: dev.to / about 1 month ago
WebP/AVIF over PNG/JPG: Converted all icons to WebP (using Squoosh) – average size reduction of ~60% (e.g., a 40KB PNG icon became 15KB WebP). - Source: dev.to / about 2 months ago
It often comes down to compat, and developer requests. Personally I find in-browser encoding for images inadequate, because it doesn't expose enough options. When we built https://squoosh.app/, we exposed the browser encoders for... - Source: Hacker News / 3 months ago
Tracking StackPDF since Nov 2026.
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PDF24 is a free to use PDF creator, converter, and virtual printer.
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