Scaleflex, ResourceSpace, Filestack, imgix

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.

Scaleflex

ResourceSpace

Yes

Filestack

imgix

Everything else

Scaleflex

ResourceSpace

Filestack

imgix

Verdict

An image/video optimization and delivery API with a lightweight DAM layered on top, aimed at EU-based teams that want GDPR/France-hosted processing and hands-on vendor support.

An open-licence, self-hosted DAM for teams with in-house server admin capability, trading a free licence for the time to run upgrades, tune dependencies and troubleshoot it themselves.

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 image and video API for real-time resizing, compression, and format conversion via URL parameters, built for developers at ecommerce, media, and agency teams.

Price published

Yes

Billed on

Quoted per customer

Self-hosted: no licence fee. Hosted: a user ceiling per tier

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).

Consumption-based credits, sold in monthly tiers ($25–$500/mo self-serve, custom above that). Credits are spent on Management (2 credits/GB/month for stored assets), Delivery (1 credit/GB bandwidth), and Transformation (variable by operation). Per-credit rate drops as plan tier rises ($0.25 down to $0.12, monthly billing; slightly cheaper on annual commitment). Each plan also states an implied storage/bandwidth cap in GB.

Deployment

Cloud

Cloud, On-premise

Cloud

Free plan

Yes

Free trial

Transparency index

10%

60%

Not checked

Most common complaint

Three tiers described by features, none of them priced

The free route is genuinely free of licence fees but moves hosting, upgrades and support onto you

Not checked

“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.

Scaleflex Three tiers described by features, none of them priced — ask them to answer this in writing before the trial.

ResourceSpace The free route is genuinely free of licence fees but moves hosting, upgrades and support onto you — ask them to answer this in writing before the trial.

No email required — the page prints as it stands.