Download websites that use Gumlet

About Gumlet

Images and video carry the bulk of the weight on a typical page, and handing them to an outside service is one of the few infrastructure decisions a site makes that a visitor can actually see. Gumlet does that job. It takes an origin image or video, resizes, compresses and reformats it on request, then serves the result from its own edge network. Because the transformation is driven by the URL, the fingerprint is unusually honest: a match means we saw a delivery hostname in the markup, not a script tag we guessed from.

Filed under Performance, Gumlet sits in a narrower band than a general purpose content network. A site using it has decided that media is the performance problem worth paying for, which implies a catalogue, a publishing schedule or a media library large enough that manual optimisation stopped being practical. Storefronts, publishers and product led software companies are typical of what we see, and the presence of the service says more about page weight priorities than about the rest of the stack.

The platform comes from Gumlet on a Freemium model, and the pricing model matters for interpretation. A free tier means the recorded population mixes production deployments with abandoned experiments, and no billing signal separates them from outside. Dating from 2018, the product arrived after responsive images and modern formats were already expected, so its install base has no legacy tail. The client side helper is written in JavaScript, though the real work happens at the edge rather than in the browser.

As of October 2026 the fingerprint appears on 12 sites, and the count is conservative for a specific reason. Customers who front the service with their own hostname, the normal arrangement for anyone who cares about branding or cookie scope, are invisible to a fingerprint keyed on the vendor domain. Visible sites are therefore weighted toward default configurations and smaller teams, and the true footprint is larger than the number we can defend.

For a commercial researcher the set works in either direction. Competing media platforms get accounts already sold on the category and already paying, which removes the slowest part of the conversation. Performance consultants and agencies get the inverse signal, a group of media heavy sites that already budget for delivery. A lookup on one domain settles a single deal. Counting the population, splitting it by country code or top level domain and comparing one export against the next is what shows whether the category is growing, and that needs the full list.