Best validate plugins for WordPress
The most popular validate plugins for WordPress in November 2026, in WordPress.org’s own popular order, which follows active installs. Advanced Custom Fields leads with 100+ active installs, ahead of Academic Certificate Verification (70+) and Filled In (20+). All 7 plugins tagged “validate” are below, with figures from WordPress.org that update every day.
Installs aren’t everything: a recent release, a “Tested up to” that matches the current WordPress, and support threads that get resolved show a plugin is looked after. Open any plugin for its downloads, rank history and alternatives.
Research this niche or see all plugins.
Top 6 validate plugins
- 1.
Advanced Custom FieldsThe most installed validate plugin, with 100+ active installs. Rated 4.5 from 22 reviews, last updated 11 years ago. Tested only up to WordPress 4.3.34.
- 2.
Academic Certificate Verification70+ active installs. Only 2 reviews so far, updated 1 month ago.
- 3.
Filled In20+ active installs. Only 3 reviews so far, updated 11 months ago. Tested only up to WordPress 6.7.11.
- 4.
Validate Gravatar10+ active installs. Only 1 review so far, last updated 12 years ago. Tested only up to WordPress 3.7.41.
- 5.
ValidBot10+ active installs. No reviews yet, last updated 4 years ago. Tested only up to WordPress 5.8.19.
- 6.
Format JSON OnlineFewer than 10 active installs. No reviews yet, last updated 1 year ago. Tested only up to WordPress 6.8.12.
All 7 plugins tagged “validate”
Advanced Custom Fields
Down in the last 7 days:179#13,967by doublesharp11 years ago
The Validated Field add-on for Advanced Custom Fields provides input masking and server-side validation of other field types.
- Installs
- 100+
- Rating
- 4.5(22)
- Downloads
- 0/day
Academic Certificate Verification
Down in the last 7 days:548#18,624by Syed Tarikul Islam1 month ago
Easily verify, validate, and manage academic certificates, diplomas, degrees, and training credentials with unique IDs, QR codes, and PDF export.
- Installs
- 70+
- Rating
- 5.0(2)
- Downloads
- 11/day
Filled In
Down in the last 7 days:104#25,802by FolioVision11 months ago
Generic form processor allowing forms to be painlessly processed and aggregated, with numerous options to validate data and perform custom commands
- Installs
- 20+
- Rating
- 3.3(3)
- Downloads
- 0/day
Validate Gravatar
Down in the last 7 days:204#32,254by Arefly12 years ago
Check if the Email's Gravatar is exist. 檢測指定郵箱的Gravatar是否存在
- Installs
- 10+
- Rating
- 5.0(1)
- Downloads
- 1/day
ValidBot
Down in the last 7 days:544#40,999by ValidBot5 years ago
Validate a website to ensure it follows best practices for security, performance and effectiveness.
- Installs
- 10+
- Rating
- –
- Downloads
- 0/day
Format JSON Online
#68,769by anilpeter751 year ago
A simple tool to format and validate JSON online within your WordPress admin.
- Installs
- <10
- Rating
- –
- Downloads
- 0/day