Good photographs sell — and they are also the heaviest thing on a page. The way out is not worse images but smaller files: the same picture, a fraction of the bytes. This add-on runs your catalog through an optimisation service and gives back images nobody can tell apart from the originals.
How it works
- The add-on scans the store's images and analyses their quality.
- You choose one of three services — resmush.it, tinypng.com or shortpixel.com — or two of them at once for a better result.
- You set the preferred quality and start the optimisation.
- When it finishes you get detailed statistics: how many images were processed and how much disk space was saved.
- Images that could not be optimised are listed separately and can be retried.
- A cron script optimises newly uploaded images automatically.
What it can do
- Supported formats: PNG, JPG, GIF, BMP, TIF and WebP for files under 5 MB; PNG, JPG and GIF for larger ones.
- A choice of optimisation quality for resmush.it and shortpixel.com.
- Resizing images during optimisation.
- Generating icons for high-resolution images to speed pages up.
- It also processes images used by third-party add-ons.




Why it matters beyond speed
Page weight is a ranking signal and a conversion factor at the same time: on mobile connections a heavy catalog page loses visitors before it finishes drawing. Compression is the cheapest of all speed fixes — nothing has to be redesigned or rebuilt.
Support and updates
Setup is covered in the documentation. Six months of free updates, questions through HelpDesk.
FAQ
Will customers notice the difference?
No — that is the point of the quality settings. The compression is chosen so the picture looks the same while the file is much smaller.
Do I need an account with an optimisation service?
You choose the service and connect it; the free tiers of those services are enough for many stores.
What about images uploaded later?
A cron script optimises new images automatically, so the catalog does not drift back to heavy files.
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CS-Cart development · in-house team · since 2013 We build, upgrade and speed up CS-Cart stores and marketplacesAnalysts, developers, designers, QA and support under one roof — no subcontractors. We ship add-ons you can buy on this page today, and we take on the work that no ready-made add-on covers. |
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2013 Working with |
4.98 Rating from |
197 Solutions on this |
500+ E-commerce projects |
Flagship products
Two add-ons that change how a store performs
Everything else we publish improves one screen. These two change the numbers: how customers find products, and how often they come back.
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Add-on · Search & merchandising Smart SearchElasticsearch-powered search for large catalogues. The customer types two letters, sees products with images and prices, and buys from the dropdown — even after a typo or with the wrong keyboard layout. Visitors who use the search bar are 24% of traffic and 44% of revenue, and convert about 2.5× better than people who only browse categories. If search returns nothing, up to 80% of them leave. | ||||||||
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Try it on a live catalogue: open the demo store and search with a deliberate typo. |
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Add-on · Mobile commerce PowerApp — mobile app for your storeA native iOS and Android app running on your CS-Cart data: the same products, prices, stock, promotions, reward points and orders. There is no second catalogue to maintain — everything stays in the admin panel you already use. A mobile site brings a customer in once; an app brings them back for free. Push notifications replace the retargeting budget you spend to buy the same customer a second time. | ||||||||
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Screens, block types and pricing tiers: see how the app is built. |
Services
When no add-on solves it, we do the work
Fixed scope, written specification, a named project manager and a warranty on what we ship.
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Custom CS-Cart development Functionality the platform does not have: add-ons, marketplace mechanics, integrations with 1C, CRM, ERP, payment and delivery providers. We start from a written specification, not from an estimate on a phone call. Details → |
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CS-Cart upgrade Move to the current version without losing data, custom code or add-ons. We audit every modification first, upgrade on a staging copy, adapt what breaks and switch over with little or no downtime. Details → |
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Speed and performance optimisation Conversion falls by about 4.4% for every extra second of load time. We profile the server, the database and the front-end, then fix what actually costs the seconds — and show you the before-and-after numbers. Details → |
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Design for CS-Cart Mobile-first storefront design built on CS-Cart's own template structure, so the layout survives the next platform upgrade instead of becoming a migration problem. Details → |
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SEO for CS-Cart A technical audit of indexing, duplicates, redirects, structured data and Core Web Vitals — delivered as a prioritised fix list your developers can act on, or that we implement ourselves. Details → |
How we work
What you get besides the code
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Before we start We discuss the goal, offer options and write the specification. You approve scope and price before development begins. |
While we build A named project manager reports progress on a fixed schedule. You always know what is in work and what is next. |
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Before release A separate QA pass on every release — the developer who wrote the code is not the person who signs it off. |
After handover Documentation for everything we ship, plus a warranty on the modifications and the project. |
Tell us what the store needs to doDescribe the task in a couple of sentences and we will come back with options, a scope and a price. The consultation is free, and we will say plainly if a ready-made add-on already solves it.
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Client cases, our full add-on catalogue and 184 customer reviews are in the tabs above.
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- Speeds up the site.
- Reduces server load.
- Raises in search results.