Deno Standard Library

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

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[!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.

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Packages

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

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

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

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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"
  />
</a>

[![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.