
TinyPNG
Squoosh
Compressor.io
iLoveIMG
Gumlet
Imagify
ImageOptim
Speed up your website by optimizing the images.

Buffer
Upload-Post
Ayrshare
Hootsuite
getLATE.dev
Postiz
Zernio
Postproxy is a unified API to publish, manage comments, direct messages, and reviews across Instagram, TikTok, LinkedIn, X, YouTube, Facebook, Threads, Bluesky, and more.

Which is more popular?
Based on our record, ShortPixel seems to be more popular. It has been mentioned 11 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | shortpixel.com | postproxy.dev |
| Pricing | ||
| Company | Startup from Romania · 2014 | Startup from Germany · 1 - 9 employees · 2026 |
| Listed in |
In their own words, as submitted to SaaSHub.


ShortPixel is an image optimization service that offers tools and WordPress plugins that can be easily used to optimize and compress images with just a few clicks.
Postproxy is a social media API for products that need more than publishing. Publish posts, manage comments, DMs and reviews, track post and profile analytics, and receive webhooks across major platforms. Built for SaaS products, automation workflows, and agents that need reliable social media...
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
ShortPixel is recommended for website owners, developers, and digital marketers who need to optimize images to improve site speed and performance. It's particularly beneficial for e-commerce sites, blogs, and any website with a high volume of images.
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
ShortPixel Review - [ NEW ] Adaptive Images WordPress Optimization Plugin With Super Powers
More videos
Postproxy Walkthrough: Social Media API for Publishing, Comments & DMs
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing ShortPixel and Postproxy.
ShortPixel's answer
ShortPixel Image Optimizer offers the most comprehensive, frequently updated WordPress plugin with the best image optimization algorithms
Postproxy's answer:
Postproxy combines production-grade publishing infrastructure, engagement, and analytics in one social media API. Every publishing request has an explicit status and human-readable failure reason, failed deliveries can be retried automatically, and the same platform also handles comments, direct messages, reviews, profile analytics, and webhooks.
Postproxy uses official platform APIs and OAuth flows, supports isolated profile groups for multi-tenant products, and provides integrations for n8n, Make, and Zapier, as well as an MCP server for AI agents.
ShortPixel's answer
SmartCompress image optimization algorithms offer maximum compression while keeping the image quality intact. The plugin is an install-an-forget-about-it tools fit for any WordPress website. 24/7/365 support.
Postproxy's answer:
Postproxy is a production-grade social media API for SaaS products, AI agents, and multi-tenant platforms. It provides one API for publishing, comments, direct messages, reviews, analytics, webhooks, and OAuth account connections across Instagram, Facebook, Threads, LinkedIn, TikTok, X, YouTube, Pinterest, Google Business Profile, Bluesky, and Telegram.
Compared with publishing-only APIs and automation tools, Postproxy is designed for customer-facing products that require official platform integrations, explicit delivery statuses, automatic retries, profile-group isolation, predictable pricing, and infrastructure built for production workloads.
ShortPixel's answer
Any website owner in general and any WordPress website owner in particular. Basically if your website has images then ShortPixel is a tool that you'll find useful.
Postproxy's answer:
Postproxy is primarily built for developers and product teams creating SaaS platforms, AI agents, marketing tools, and multi-tenant social media products. It is also used by agencies and automation specialists that manage social accounts for multiple customers.
Individual creators can use Postproxy, but the platform is optimized for software products and production workflows rather than manual social media management.
Postproxy's answer:
We were building a product for ads creation at scale with fancy templates management, different platforms with adaptive sizing. Then Nano Banana got released and made a product largely obsolete. Postproxy was basically a part of that product.
Share your experience with using ShortPixel and Postproxy. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


By using ShortPixel, my clients' websites now load faster and deliver a seamless experience, thanks to efficient image compression without compromising quality.
So far it has done a great job optimizing all my images and generating WEBP for each image. I used to do all this manually using Photoshop but after using ShortPixel I've saved days and hours of work!
ShortPixel is my go-to image optimization service that stands out for its efficiency in reducing image sizes without compromising quality. The user-friendly interface of the WordPress plugin makes it an ideal choice...
We have no reviews of Postproxy yet. Be the first one to post
Recommendations tracked on public social media and blogs since March 2021.


ShortPixel Image Optimizer is usually the best as it handles lossy, glossy, and lossless compression, does automatic WebP and AVIF conversion, and has solid bulk optimization with CDN included in each plan, even the Free one. It tends to... - Source: dev.to / 8 months ago
ShortPixel solves this in 2 minutes of setup, then runs automatically forever. Your images maintain their quality. Your site loads dramatically faster. Mobile visitors can actually browse your galleries. And you create a professional... - Source: dev.to / 10 months ago
ShortPixel handles image optimization automatically across your entire portfolio, so uploaded images get optimized without anyone monitoring queues or remembering which sites have optimization enabled. - Source: dev.to / 10 months ago
Tracking Postproxy since Feb 2026.
When comparing ShortPixel and Postproxy, you can also consider the following products.

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Compress and compare images with different codecs, right in your browser
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Social Media API for developers. Post to TikTok, Instagram, YouTube, Facebook & 19 more platforms with one API call. MCP server for Claude/ChatGPT, white-label for SaaS. 70k+ users.
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Optimize and compress your images online. Compressor is a lossy and lossless photo compression tool.
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Powerful APIs that enable you to send social media posts effortlessly. Post and manage your users social account via an API.
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