Cloudflare Images, Filestack, Contentstack, PhotoPrism

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.

Cloudflare Images

Filestack

Contentstack

PhotoPrism

Yes

Everything else

Cloudflare Images

Filestack

Contentstack

PhotoPrism

Verdict

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.

A file upload, transformation, and delivery API with a drop-in picker for 20+ sources, for developers adding file handling to web and mobile apps.

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 self-hosted, single-container photo indexer under AGPL/commercial licensing, for people who want a private on-hardware archive without Google-Photos-level AI tagging or mobile app polish.

Price published

Yes

Billed on

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.

Monthly subscription tiers with bundled resource allowances (bandwidth in GB, uploads counted per file, transformations per file/image operation, storage in GB, number of team members), plus per-unit overage fees once a tier's allowance is exceeded (e.g. Start plan overage is $0.2/GB bandwidth).

Quoted per customer

Subscription per edition, billed annually

Deployment

Cloud

On-premise, Cloud

Free plan

Yes

Free trial

Transparency index

Not checked

30%

100%

Most common complaint

Not checked

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

The gap between the free edition and the first paid one is wide: €200 a month

“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.

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.

PhotoPrism The gap between the free edition and the first paid one is wide: €200 a month — ask them to answer this in writing before the trial.

No email required — the page prints as it stands.