Bytemark vs Cdnjs

What Bytemark is

Bytemark is a UK hosting brand acquired by iomart. Its still-published service and documentation pages describe cloud servers from £10 per month, dedicated and managed hosting, UK facilities, an API and the open-source Symbiosis server stack. However, the original BigV cloud platform stopped receiving support on 30 April 2023 and customers were directed toward iomart's OnApp platform. The legacy website and price list remain reachable, so a new buyer should confirm current ordering, contract, platform and support status directly rather than treating every historical claim as a current offer.

What Cdnjs is

cdnjs is a free, community-run CDN for open-source web-library assets, delivered through Cloudflare. Consumers select a library, exact version and file, then reference its public URL; the service also exposes library metadata through an API. Example markup published by Cloudflare uses a versioned URL and Subresource Integrity attributes. cdnjs' code repository is MIT-licensed, but each distributed library keeps its own license. It is a dependency-delivery service rather than private storage, a package-security review or a contractual availability guarantee.

What Bytemark is built to do

UK hosting infrastructure

Published services span cloud servers, dedicated systems, racks and managed hosting.

API and CLI

Legacy cloud documentation supports programmatic account, image and server operations.

Symbiosis

Provides an open-source Debian-based stack for websites, mail, databases, firewalling and updates.

iomart migration path

Official documentation directs unsupported BigV workloads toward iomart's OnApp platform.

What Cdnjs is built to do

Library catalog

Indexes versioned files from supported open-source JavaScript and CSS libraries.

Cloudflare delivery

Serves cached public assets through Cloudflare's network.

API access

Exposes library, version and file metadata for discovery and tooling.

Integrity-ready snippets

Provides examples and hashes that can be used with browser SRI and crossorigin attributes.

Choose Bytemark if

• Existing dedicated, rack or managed-hosting customers validating their continuing service
• Legacy BigV owners who need the official migration constraints and destination context
• Teams interested in maintaining the open-source Symbiosis stack independently

Skip Bytemark if

• A new production deployment would rely on the unsupported BigV platform
• The purchase requires fully self-service current prices and terms without sales confirmation
• The team cannot test application, network, backup and billing behavior after migration

Choose Cdnjs if

• Static sites loading a well-known public library at an exact reviewed version
• Documentation and prototypes where a third-party CDN is permitted
• Teams that enforce CSP, verify SRI hashes and retain a self-hosted fallback for critical assets

Skip Cdnjs if

• Assets are private, proprietary or outside the cdnjs library catalog
• Policy forbids third-party asset requests or requires a contractual SLA
• The team cannot review the package license and code or pin an immutable version

Bytemark: pros & cons

• Developer-oriented heritage: Published documentation covers API and command-line server management.
• UK infrastructure focus: Bytemark materials describe facilities and network presence in several UK locations.
• Transparent legacy documentation: Pricing, support processes, network design and migration notices remain publicly accessible.
• Open hosting stack: Symbiosis is a Bytemark-developed Debian-based environment with automated hosting administration.
• Platform transition risk: BigV became unsupported in 2023 and the recommended destination is an iomart platform.
• Current-sales ambiguity: Reachable marketing and pricing pages contain legacy claims that may not represent a new order today.
• Self-managed responsibility: Cloud-server users still own application, operating-system and restore readiness unless management is contracted.
• Migration can change behavior: Platform, networking, backup and billing details must be revalidated on the destination service.

Cdnjs: pros & cons

• No-cost public delivery: Supported open-source library assets are served globally through Cloudflare.
• Versioned paths: URLs can identify an exact library release and file for reproducible front-end loading.
• Integrity metadata: Published examples support browser Subresource Integrity checks when the correct hash is used.
• Open project and API: Public repositories and metadata endpoints make the catalog inspectable and automatable.
• Catalog scope is narrow: It is not private asset storage or a general-purpose origin/CDN product.
• Package trust remains external: CDN availability does not prove that a library release or transitive code is safe.
• Third-party dependency: Page delivery, privacy posture and CSP must account for requests to an external domain.
• Licenses vary: The cdnjs repository license does not replace the license of each hosted library.