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Uploadcare, Kontainer, Cloudflare Images, Portfolio

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

Kontainer

No

Cloudflare Images

No

Portfolio

Yes

Everything else

Uploadcare
Kontainer
Cloudflare Images
Portfolio
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.
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 cloud service for storing, resizing, optimizing and delivering images via API and CDN, aimed at developers building web and mobile apps that handle images at scale.
An on-premise DAM known for deep metadata and search, for existing Portfolio users who size and maintain their own server, now under Axle AI ownership after a March 2026 acquisition.
Price published
Yes
No
Yes
No
Billed on
Operations, traffic and storage, with published overage rates
Depends on configuration; several features are priced separately
Storage ($5 / 100,000 images stored / month), delivery ($1 / 100,000 images delivered / month), and transformations (first 5,000 unique transformations/month free, then $0.50 / 1,000 unique transformations/month). A unique transformation is billed per distinct parameter combination (e.g. same image at 100x100 and 200x200 counts as two). Storage/delivery charges apply only to images hosted in Cloudflare Images; transforming externally-hosted images is billed only under transformations.
Quoted per customer; the licensing model was preserved through the change of owner
Deployment
Cloud
Cloud
Cloud
On-premise
Free plan
Yes
No
No
No
Free trial
No
Yes
No
No
Transparency index
70%
20%
Not checked
25%
Most common complaint
The free tier is stated as personal use only
Feature-level add-on pricing makes the final figure hard to anticipate before a quote
Not checked
It changed hands in March 2026, so anything written before that date describes it as an Extensis product

“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.
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.
Portfolio It changed hands in March 2026, so anything written before that date describes it as an Extensis product — ask them to answer this in writing before the trial.

No email required — the page prints as it stands.