PicaJet
Search Build shortlist

Uploadcare, Contentstack, Kontainer, Piwigo

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 · Runs on your own servers

If the files genuinely cannot leave your infrastructure, this is not a close race — the platforms marked No below should not be on the call at all.

Uploadcare

No

Contentstack

No

Kontainer

No

Piwigo

Yes

Everything else

Uploadcare
Contentstack
Kontainer
Piwigo
Verdict
A developer-first file upload and CDN/media-processing API for apps, pitched as a lighter, faster-to-integrate alternative to Cloudinary for teams that don't need its full DAM/video/AI stack.
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.
A self-hosted, permission-based photo/video catalog with album hierarchies, tagging and a large plugin ecosystem, for archives and small orgs willing to maintain their own server as the library grows.
Price published
Yes
No
No
Yes
Billed on
Operations, traffic and storage, with published overage rates
Quoted per customer
Depends on configuration; several features are priced separately
Flat price per account by storage; users are unlimited
Deployment
Cloud
Cloud
Cloud
On-premise, Cloud
Free plan
Yes
Yes
No
Yes
Free trial
No
No
Yes
Yes
Transparency index
70%
30%
20%
100%
Most common complaint
The free tier is stated as personal use only
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
A ten per cent price rise is announced for 1 September 2026

“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.

Uploadcare The free tier is stated as personal use only — 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.
Piwigo A ten per cent price rise is announced for 1 September 2026 — ask them to answer this in writing before the trial.

No email required — the page prints as it stands.