Deno Standard Library

High-quality APIs for Deno and the web. Use fearlessly.

Important

Newer versions of the Standard Library are now hosted on JSR. Older versions up till 0.224.0 are still available at deno.land/std.

Packages

The following list contains links to the Standard Library's packages and documentation:

Package	Status	Latest version
archive	Unstable
assert	Settled
async	Settled
bytes	Settled
cli	Unstable
collections	Settled
crypto	Settled
csv	Settled
data_structures	Unstable
datetime	Unstable
dotenv	Unstable
encoding	Settled
expect	Unstable
fmt	Settled
front_matter	Settled
fs	Settled
html	Unstable
http	Unstable
ini	Unstable
io	Unstable
json	Settled
jsonc	Settled
log	Unstable
media_types	Settled
msgpack	Unstable
net	Unstable
path	Settled
regexp	Unstable
semver	Unstable
streams	Settled
testing	Settled
text	Unstable
toml	Settled
ulid	Unstable
url	Unstable
uuid	Settled
webgpu	Unstable
yaml	Settled

Note

Settled status means a package is unlikely to have breaking changes, but has not yet achieved v1 status.

Stabilization

The Standard Library is now in the process of stabilizing its packages. See #4600 for details.

Architecture

Check out the architecture guide here.

Design

Check out the design documentation here.

Contributing

Check out the contributing guidelines here.

Releases

Package versions >=1.0.0 follow Semantic Versioning, and package versions <1.0.0 follow this proposal.

Badge

<a href="https://jsr.io/@std">
  <img
    width="135"
    height="20"
    src="https://raw.githubusercontent.com/denoland/std/main/badge.svg"
    alt="Built with the Deno Standard Library"
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[![Built with the Deno Standard Library](https://raw.githubusercontent.com/denoland/std/main/badge.svg)](https://jsr.io/@std)

Frequently Asked Questions

Check out the frequently asked questions page here.