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

TinyPNG
Screaming Frog SEO Spider
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Sitechecker
ImageOptim
Lumar
My File Tool
Free online tools for developers and site owners: compress and convert images to WebP/AVIF, PDF to images, text checker and a 400-point SEO audit. No sign-up.

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 | app-kit.dev |
| Pricing | ||
| Company | — | 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


No description of Squoosh yet.
App-Kit is a set of free web tools for developers and site owners. Compress JPG, PNG and GIF to WebP or AVIF, convert HEIC, resize and crop, turn PDF pages into images, check a text for readability and keyword stuffing, and run a 400-point SEO audit that returns a 0-100 score and a PDF report. No...
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 App-Kit.dev yet.
Walkthroughs and reviews on video.
Jumbo Squoosh-o’s Review! #SLIMESTAGRAM #JumboSquooshos
More videos
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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using Squoosh and App-Kit.dev. 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 App-Kit.dev 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 1 month 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 App-Kit.dev since Oct 2026.
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