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fetch-blob

npmv4.0.0TypeScript

Blob & File implementation in Node.js, originally from node-fetch.

Not recommended for new projects

No — fetch-blob should not be adopted for new projects. Last published 1210 days ago.

  • AAdoption: grade A, Excellent.

    52.7M downloads per week and 2 known dependents.

  • FMaintenance: grade F, Failing.

    Last published 1210 days ago.

  • AWeight: grade A, Excellent.

    Pulls in 1 transitive package, about 29 KB installed.

  • ASupply chain: grade A, Excellent.

    No install scripts, 3 maintainers, and a contained dependency surface.

  • ALicense: grade A, Excellent.

    MIT — permissive, with no copyleft found in the dependency tree.

Grades are computed deterministically from registry metadata collected by PackageGraph — downloads, dependents, publish dates, the resolved dependency tree, maintainer count, and declared licenses. No third-party scores are used.

Install cost

What you actually take on by adding fetch-blob to a project.

1
Direct dependencies

Runtime packages this one declares itself.

1
Total installed

Distinct packages in the full runtime tree, deduplicated the way a package manager would.

29 KB
Install size

Unpacked size of this package plus its entire runtime tree.

1
Tree depth

Longest resolved dependency chain below this package.

Licenses in the dependency tree

MIT

Every license you inherit by installing fetch-blob, not just its own. Check this before a legal review, not after.

Compatibility

Node.js
node >=16.7
Module format
ESM only
TypeScript
Types included
Install scripts
None

Quick start

A usage example from the fetch-blob README.

jsFull README ↗
    import {Readable} from 'stream'
    const stream = Readable.from(blob.stream())

fetch-blob vs the alternatives

Packages solving a similar problem in the npm ecosystem, compared on the signals that drive an adoption decision.

PackageWeekly downloadsDependentsLicenseLast release
fetch-blobthis page52.7M2MIT3 years ago
callsites136.7M1MIT1 day ago
mime136.4M6MIT1 day ago
open130.4M4MIT1 day ago
send127.6M3MIT1 day ago
normalize-path72.6M1MIT1 day ago

Dependencies

Declared by fetch-blob v4.0.0. Runtime dependencies are installed with the package; dev dependencies are not.

Runtime (1)

node-domexception ^1.0.0

Dev (3)

@types/node ^16.5.0c8 ^7.13.0typescript ^5.0.4

Used by

Popular packages that depend on fetch-blob.

node-fetchnpm

A light-weight module that brings Fetch API to node.js

↓ 172.9M/wk◈ 9 dependents⚖ MITTS
formdata-polyfillnpm

HTML5 `FormData` for Browsers and Node.

↓ 40.9M/wk◈ 1 dependents⚖ MIT

Relationship graph

Dependencies (left) and dependents (right) of fetch-blob.

node-domexceptionnode-fetchformdata-polyfillfetch-blob
fetch-blob dependencies dependents

Frequently installed together

formdata-polyfillnpm

HTML5 `FormData` for Browsers and Node.

↓ 40.9M/wk◈ 1 dependents⚖ MIT
form-datanpm

A library to create readable "multipart/form-data" streams. Can be used to submit forms and file uploads to other web applications.

↓ 0/wk◈ 7 dependents⚖ MITTS
@types/nodenpm

TypeScript definitions for node

↓ 0/wk◈ 327 dependents⚖ MITTS
chainpm

BDD/TDD assertion library for node.js and the browser. Test framework agnostic.

↓ 0/wk◈ 57 dependents⚖ MIT
abort-controllernpm

An implementation of WHATWG AbortController interface.

↓ 0/wk◈ 4 dependents⚖ MIT
data-uri-to-buffernpm

Create an ArrayBuffer instance from a Data URI string

↓ 0/wk◈ 1 dependents⚖ MIT

Release history

No releases in the last two years, typically about 27 days apart.

Recent versions of fetch-blob
VersionPublishedSizeLicense
4.0.0latest3 years ago24 KBMIT
3.2.04 years ago21 KBMIT
3.1.54 years ago22 KBMIT
3.1.44 years ago21 KBMIT
3.1.34 years ago21 KBMIT
3.1.25 years ago22 KBMIT
3.1.15 years ago24 KBMIT
3.1.05 years ago23 KBMIT
3.0.15 years ago24 KBMIT
3.0.05 years ago24 KBMIT
3.0.0-rc.05 years ago20 KBMIT
2.1.25 years ago14 KBMIT
2.1.16 years ago13 KBMIT
2.1.06 years ago13 KBMIT
2.0.16 years ago11 KBMIT

Overview

fetch-blob is an npm package that blob & File implementation in Node.js, originally from node-fetch. It is extremely widely used, with about 52.7M downloads per week and 2 known dependents in the graph. The latest version is 4.0.0, released under the MIT license.

Who should use it

Teams working in the npm ecosystem who need blob & File implementation in Node.js, originally from node-fetch and value a battle-tested, widely-adopted solution.

When not to use it

Consider an alternative if you need to or if a more actively-maintained option better fits your npm stack.

Pros

  • Large, well-established user base (52.7M weekly downloads).
  • Ships TypeScript type definitions.
  • Clear open-source license (MIT).

Cons

  • No significant drawbacks detected from available metadata.

Auto-generated from collected registry metadata. No external claims are inferred.

Maintainers

akepinskibitinnendless

Keywords

blobfilenode-fetch

Funding

Frequently asked questions

Should I use fetch-blob?

No — fetch-blob should not be adopted for new projects. Last published 1210 days ago.

How do I install fetch-blob?

Run `npm install fetch-blob` to add fetch-blob to your npm project.

How many dependencies does fetch-blob have?

fetch-blob declares 4 direct dependencies and pulls in 1 packages in total once its runtime tree is resolved totalling about 29 KB on disk.

What license is fetch-blob released under?

fetch-blob is distributed under the MIT license.

How popular is fetch-blob?

fetch-blob has approximately 52,712,322 downloads per week and 2 known dependent packages.

Is fetch-blob still maintained?

The most recent release of fetch-blob (v4.0.0) was published 3 years ago.

Does fetch-blob run install scripts?

No. fetch-blob does not define preinstall, install, or postinstall scripts, so installing it does not execute publisher-supplied code.