ImageKit, CELUM, Contentstack, Kontainer

Side by side on what we have verified on each vendor’s own pages. Where a fact was not checked, the table says so rather than leaving a blank that reads as “no”.

What decides it · Publishes a price

One of these tells you the order of magnitude before you speak to anyone, and the others do not. That difference sets how long your evaluation takes, whatever the software does.

ImageKit

Yes

CELUM

Contentstack

Kontainer

Everything else

ImageKit

CELUM

Contentstack

Kontainer

Verdict

An image and video CDN with an API-first asset library, built for fast developer integration, billed on flat monthly tiers with per-GB overage once bandwidth or storage limits are exceeded.

An enterprise DAM bundled with workflow and creative-review tools, aimed at mid-to-large manufacturing and consumer brands needing deep Adobe/PIM/CMS/e-shop integration and partner-led setup.

An enterprise headless CMS and composable DXP for developer-led teams needing multi-channel content delivery, with a native asset-management module that's newer and thinly reviewed.

A Nordic/European DAM, with optional PIM, aimed at mid-market brand, retail and ecommerce teams wanting fast onboarding without heavy IT involvement, backed by a 30-day no-commitment trial.

Price published

Yes

Billed on

Bandwidth, storage and user seats, with published per-unit rates above the limits

Quoted per customer

Depends on configuration; several features are priced separately

Deployment

Cloud

Free plan

Yes

Free trial

Yes

Transparency index

70%

30%

20%

Most common complaint

Several units are metered at once: bandwidth, storage, video units and seats

The pricing page contains neither tiers nor figures

A free start exists, but the terms for moving to a paid tier are not on the page

Feature-level add-on pricing makes the final figure hard to anticipate before a quote

“Not checked” means exactly that: we have not verified it, not that the platform lacks it. Every other value was read off the vendor’s own pages on the date shown on each platform page.

What to ask on the demo

One question per platform, drawn from what actually goes wrong with it — not a generic checklist. Vendors run the demo; this hands the agenda back to you.

ImageKit Several units are metered at once: bandwidth, storage, video units and seats — ask them to answer this in writing before the trial.

CELUM The pricing page contains neither tiers nor figures — ask them to answer this in writing before the trial.

Contentstack A free start exists, but the terms for moving to a paid tier are not on the page — ask them to answer this in writing before the trial.

Kontainer Feature-level add-on pricing makes the final figure hard to anticipate before a quote — ask them to answer this in writing before the trial.

No email required — the page prints as it stands.