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json_annotation

Published by 🇺🇸google.dev · v4.12.0 · released 4 months ago · BSD-3-CLAUSE License

First published 8 years ago.

Classes and helper functions that support JSON code generation via the `json_serializable` package.

View on pub.dev View source
Part of google/json_serializable.dart (3 packages) #2 in Code Generation #10 overall androidioswindowslinuxmacosweb
Downloads / day
421,383
as of 2026-09-13
GitHub stars
1,618
★ refreshed weekly
Likes
1,312
on pub.dev
Pub points
150 / 160
2026-08-14 2026-09-13

Repository health

Shared with 2 sibling packages in this repo.

Last commit
1 month ago
Issue response
Maintainer replies within ~2 days (median over 10 closed issues)
Commit activity
Open issues
138
Open PRs
15
Contributors
49 (top contributor 91%)
CI
GitHub Actions
License (repo)
Sibling packages: checked_yaml, json_serializable

Last refreshed 14 days ago.

License explained · BSD-3-Clause

BSD 3-Clause "New" License

Use freely, even commercially. Keep the notice. Don't use the author's name to endorse derived products without permission.

A permissive license similar to the BSD 2-Clause License, but with a 3rd clause that prohibits others from using the name of the copyright holder or its contributors to promote derived products without written consent.

You can

  • Commercial use
  • Distribution
  • Modification
  • Private use

You must

  • Include the license and copyright notice

The license does not

  • No liability
  • No warranty

Plain-English summary, not legal advice. Full text on SPDX or choosealicense.com. Summaries adapted from choosealicense.com (a GitHub project, MIT-licensed).

Commit activity, past 52 weeks

json_annotation

35 commits in the past year
Slowing -29% vs 9 months ago
10 5 0 52w ago36w ago18w agothis week
Weekly average
0.7 commits
Busiest week
6 commits, 29 weeks ago
Active weeks
19 of 52 (37%)
Longest quiet stretch
5 weeks with no commits

Weekly commits to the default branch on GitHub. Source: GET /stats/participation. Refreshed weekly. Excludes commits to other branches.

How json_annotation compares in Code Generation

Top of the Code Generation leaderboard, with json_annotation highlighted.

Rank Package Downloads / day Stars Likes
#1
built_value
🇺🇸 google.dev
455.9K ★ 885 781
#2
json_annotation
🇺🇸 google.dev
421.4K ★ 1.6K 1.3K
#3
ffi
🇺🇸 dart.dev
399.8K ★ 273 352
#4
code_assets
🇺🇸 dart.dev
347.1K ★ 272 15
#5
code_builder
🇺🇸 tools.dart.dev
320.4K ★ 113 297

Compare json_annotation with

Head-to-head breakdowns against the other top Code Generation packages.