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esbuild vs Fastly

esbuild logo

esbuild

Web Development

Extremely fast JavaScript bundler written in Go

From
Free
Rated
-
Full reviewWebsite
Fastly logo

Fastly

Cloud

High performance edge computing platform

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: esbuild deliberately does not type-check TypeScript, only strips types, so tsc still runs separately; Fastly bandwidth is priced per region, and delivery to India, Africa and South Korea is $0.28 per GB against $0.12 in North America and Europe
  • They diverge on capability: esbuild covers Very fast builds, Fastly covers Edge Compute.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which esbuild and Fastly actually diverge.

Attributes where esbuild and Fastly differ
AttributeesbuildFastly
Pricing modelOpen source, no licence feeusage-based
PlatformsLinux, macOS, WindowsWeb, Api
CategoryWeb DevelopmentCloud
FoundedUnknown2011

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in esbuild

  • Very fast builds
  • TypeScript support
  • Tree shaking and minification
  • Simple API

Only in Fastly

  • Edge Compute
  • CDN
  • DDoS Protection
  • Real-time Analytics
  • Image Optimization
  • Video Streaming
  • API
  • Instant Purge

What people use each for

The jobs each tool is most often brought in to do.

esbuild

  • Build pipelines where bundle time is the bottlenecknot Fastly
  • Libraries and tools needing a fast, embeddable bundlernot Fastly
  • Replacing slower bundlers where the plugin ecosystem is not needednot Fastly

Fastly

  • Serving static and dynamic content through a global CDNnot esbuild
  • Running edge logic and caching in front of an origin applicationnot esbuild

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

esbuild

  • Deliberately does not type-check TypeScript, only strips types, so tsc still runs separately
  • Plugin API is far narrower than webpack or Rollup, and complex builds hit its limits
  • Code splitting support has historically lagged the more established bundlers
  • Frequently used indirectly through Vite, so direct use is a narrower need than the download numbers suggest

Fastly

  • Bandwidth is priced per region, and delivery to India, Africa and South Korea is $0.28 per GB against $0.12 in North America and Europe
  • The same traffic therefore costs more than twice as much depending on where the audience is, which is invisible until the bill arrives
  • The free allowance is 100 GB of bandwidth and 1M requests a month
  • Requests are billed separately from bandwidth, at $0.01 per 10,000 above the first million
  • High volume rates past 50 TB are not published and require contacting sales

Pricing, plan by plan

esbuild

Free
  • esbuildFree
    • Full functionality
    • Commercial use permitted
    • Community support

Fastly

Free
  • Free TrialFree
    • CDN
    • DDoS protection
    • Real-time analytics
  • Pay-As-You-GoFree
    • Usage-based pricing
    • Advanced features
    • Priority support

Which should you pick?

Choose esbuild if

  • You need very fast builds.
  • You want to start without paying.
  • You work on Linux, macOS, Windows.
  • You also want typescript support.
esbuild review

Choose Fastly if

  • You need edge compute.
  • You want to start without paying.
  • You work on Web, Api.
  • You also want cdn.
Fastly review

Questions people ask

Is esbuild or Fastly better?
Neither clearly leads. esbuild starts at Free and Fastly at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, esbuild or Fastly?
esbuild starts at Free and Fastly at Free.
Does esbuild or Fastly run on more platforms?
esbuild runs on Linux, macOS, Windows. Fastly runs on Web, Api.
Can I use esbuild for free?
Both have a free tier, so you can try either at no cost before committing.
What is esbuild best used for?
esbuild is most often used for build pipelines where bundle time is the bottleneck, libraries and tools needing a fast, embeddable bundler, replacing slower bundlers where the plugin ecosystem is not needed. Of those, build pipelines where bundle time is the bottleneck and libraries and tools needing a fast, embeddable bundler are not what Fastly is typically brought in for.
What can esbuild do that Fastly cannot?
esbuild covers Very fast builds, TypeScript support, Tree shaking and minification, Simple API. Fastly covers Edge Compute, CDN, DDoS Protection, Real-time Analytics.

Answered from the vendors’ own pages

esbuild: Is esbuild free?

Yes, open source under the MIT licence.

Fastly: Does Fastly charge based on usage or a flat monthly fee?

Fastly operates on a usage-based model with volume discounts. They offer a free tier with 100 GB bandwidth and 1M requests for experimentation, then customers pay per unit consumed with tiered discounts as consumption increases.

Source
esbuild: Does esbuild type-check TypeScript?

No. It strips types for speed and does not check them. Run tsc separately if you need type checking.

Fastly: What are Fastly's main service packages and their costs?

Fastly offers Network Services Packages ($1,500-$6,000/month baseline), Security Packages (custom pricing), Compute Packages ($500/month entry level), and Observability Packages ($1,500/month entry level). Enterprise solutions include custom quotes for high-volume deployments.

Source
esbuild: Do I need esbuild if I use Vite?

You already have it. Vite uses esbuild internally for dependency pre-bundling and transforms.

Fastly: Can I start using Fastly for free?

Yes, Fastly offers a free tier with generous allowances for experimentation including 100 GB bandwidth and 1M requests. You can start building free and only pay when you use additional resources.

Source
Fastly: Are there surprise overage charges with Fastly?

Fastly advertises predictable pricing with no surprise overages. The pricing structure is designed to be transparent as consumption grows.

Source
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