
OptimizeImages Free Bulk Image Optimizer
Percept Pixel
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FreeConverto
Applied AI Hub
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ImgSmaller
Compress, convert images & remove backgrounds in your browser. No server upload. Full privacy.

The modern platform for creating, sharing, and collaborating on AI prompts. Advanced version control and real-time testing.

Website, pricing, platforms and company facts side by side.
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| Website | optimaza.io | diffyn.com |
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| Company | Startup from Ukraine · 1 - 9 employees · 2026 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Optimaza is a privacy-first online image tool that compresses JPEG/JPG and PNG files, converts images between formats (JPG ↔ PNG), and removes image backgrounds directly in your browser. Images are processed locally on your device, so nothing is uploaded or stored on a server. Compress up to 10...
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What each product offers, as listed by its team.


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The Ultimate Prompt Tool for Creators – Visualize & Organize with Diffyn
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As answered by people managing Optimaza and Diffyn.
Optimaza's answer
Optimaza processes images entirely in the browser. Files are never uploaded to a server, stored, or tracked.
Unlike most online image compressors, it focuses on privacy, simplicity, and speed — no accounts, no cloud processing, and no hidden data collection.
Diffyn's answer:
Addresses workflow and change management on LLM prompts, provide teams with traceability and visualization of tests across multiple models, provide deeper understading into efficiency of these prompts.
Optimaza's answer
Optimaza is ideal for users who care about privacy and control. Images are compressed locally on the device, which makes the tool faster and safer than upload-based alternatives.
It’s also lightweight and straightforward — open the page, drop images, compress, and download.
Diffyn's answer:
Diffyn is the platform that specializes on both change management and multi-model analysis.
Optimaza's answer
Optimaza is built using modern web technologies, including JavaScript, WebAssembly, and browser-native image processing APIs.
All compression happens client-side, without server-side image handling.
Diffyn's answer:
React, Next.js, POSTGRESQL
Optimaza's answer
Optimaza is built for developers, designers, marketers, and everyday users who need a fast way to optimize images.
It’s especially useful for people working with websites, emails, or content platforms who want smaller image files without sharing them with third-party servers.
Diffyn's answer:
Professionals incorporating LLMs or AI tools in their workflow and wants to keep track of changes and test their prompts.
Optimaza's answer
Optimaza started as a small side project to solve a simple problem: compressing images without uploading private files to random online services.
The goal was to create a clean, browser-based tool that respects user privacy while still delivering practical image optimization results.
Diffyn's answer:
I started working on Diffyn when I notice that prompting has become an essential part of work across many industries. While there are version control platofrms like github, they are not designed for just prompt management are can be overkill such applications, it is also not integrated natively with various LLMs and relevant tools for users to validate ideas and visualise results properly.
Optimaza's answer
Optimaza is currently used by individual developers, designers, small teams, and content creators around the world.
The product is still early-stage and growing organically.
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