aeson-pretty

JSON pretty-printing library and command-line tool.

http://github.com/informatikr/aeson-pretty

LTS Haskell 24.46:	0.8.11
Stackage Nightly 2026-06-22:	0.8.11
Latest on Hackage:	0.8.11

See all snapshots aeson-pretty appears in

BSD-3-Clause licensed by Falko Peters

Maintained by Martijn Bastiaan

This version can be pinned in stack with:aeson-pretty-0.8.11@sha256:cddae5ecbbc54d712f5fe3542178cde6f3801658f0907a334bd2660f4a1dbe35,2265

Module documentation for 0.8.11

Data
- Data.Aeson
  - Data.Aeson.Encode
    - Data.Aeson.Encode.Pretty

Depends on 12 packages(full list with versions):

aeson, aeson-pretty, attoparsec, attoparsec-aeson, base, base-compat, bytestring, cmdargs, scientific, text, unordered-containers, vector

Used by 28 packages in nightly-2026-06-22(full list with versions):

Welcome to aeson-pretty

This is a JSON pretty-printing Haskell library compatible with aeson as well as a command-line tool to improve readabilty of streams of JSON data.

The library provides a single function encodePretty. It is a drop-in replacement for aeson’s encode function, producing JSON-ByteStrings for human readers.

The command-line tool reads JSON from stdin and writes prettified JSON to stdout. It also offers a complementary “compact”-mode, essentially the opposite of pretty-printing.

Join in!

We are happy to receive bug reports, fixes, documentation enhancements, and other improvements.

Please report bugs via the github issue tracker.

Master git repository:

git clone git://github.com/informatikr/aeson-pretty.git

Aeson / GHC support

We support all GHCs supported by the latest Aeson release. This in turn determines which Aeson releases we support.

Authors

This library is written by Falko Peters [email protected] and maintained by Martijn Bastiaan [email protected].

aeson-pretty

Module documentation for 0.8.11

Welcome to aeson-pretty

Join in!

Aeson / GHC support

Authors

Changes

aeson-pretty changelog

0.8.11

0.8.10

0.8.9