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Formstack Online Forms

by mmattax · Forms

This plugin allows you to easily embed Web forms built with Formstack's online form builder into your sidebar, pages, and posts.

Try it live opens a temporary test site in your browser, which can take about 20 seconds to load. Plugins that rely on outside services or a full server may not work completely there.

⚠ Stale⚠ Likely abandoned⚠ Few reviews⚠ Open vulnerability

Health

D 43/100

Stale · Likely abandoned · Few reviews · Open vulnerability

Active installs

1K+

≈1.5K estimated

Momentum

+5%

downloads vs prior 30d

Biggest opportunity: “form builder”, “forms” and “lead generation” aren't earning a slot. You list them, but you're not in the first 24 results for those searches. WordPress.org counts only your first five tags, so free the slot for a search you can win.

How scoring works →
43 Health · D
Maintenance 3/100
Rating quality 58/100
Support 70/100
Security 65/100

43 health vs 65 average across 2,510 Forms plugins

Install conversion

How it's measured →

1.2%

of downloads still active

At least 1K of 85.4K lifetime downloads are still running, in line with its category: the median Forms plugin keeps 1.3%, across 1,666 plugins.

Downloads count every update, not just first installs, so older and more frequently released plugins read lower. Compare against other Forms plugins, not across the directory. wp.org reports active installs as the bottom of a band, so the real rate is this or higher.

High removal-risk signals

63/100

Maintenance and integrity signals that tend to precede a WordPress.org removal. Not an official status, a heads-up to act.

  • Long abandoned. No update in 7+ years — the top precursor to removal once a vulnerability is found.
  • Compatibility drift. Tested only up to WordPress 5.1.28, well behind 6.8.

Details

Version
2.0.2
Last updated
7.6y ago
Added
2010-09-09 · 16 yrs old
Requires WP
2.8
Tested up to
5.1.28
Requires PHP
—

Directory ranking optimization

How it's scored →

How well this listing is tuned to rank in WordPress.org search, on the factors an owner controls. Not popularity, optimization.

40 / 100

Under-optimized

Most to gain: Update recency

Update recency 1/100

Updated 2759 days ago, past the ~180 days where wp.org starts discounting

WP compatibility 13/100

Tested up to WordPress 5.1.28; the current branch is 6.8

Rating quality 56/100

2.5★ over 8 reviews, smoothed to 3.88★ and held back under 25 reviews

Listing tuning 100/100

5 of 5 tags set · short description in place

To rank higher: Last updated 2759 days ago — ship an update; wp.org decays a listing's search weight after ~180 days.

Get the full rank-higher report →

Daily downloads

Since 5 Oct 2022 · 1,488 days · wp.org + Plugin Pulse archive

+5% vs prior 30d
1231 Oct 2026

30-day downloads

Rolling 30-day volume · peak 624 · peaks are release surges

49531 Oct 2026

Directory rank vs rivals

wp.org popularity rank over time · higher is better · when a rival's line climbs above yours, they've overtaken you

Formstack Online For · #5858youLead Form Builder & · #2373Formsite · #7328Lead Generation Form · #8331

Rating trend

Star average over time · dips mark rough releases

2.531 Oct 2026

Health trend

Composite health score, snapshotted daily

4331 Oct 2026

Update activity

How busy the existing users are, measured as downloads in the last 30 days for every 1,000 active sites. A spike means a new release everyone's pulling; a long, slow decline means an aging user base that updates less.

49531 Oct 2026

Release cadence

No release in a year
from wp.org release tags

How often this plugin actually ships. A steady rhythm is the maintenance signal a single "last updated" date can't show.

0

releases in the last 12 months

7.6y ago

latest release · v2.0.2 · 12 Apr 2019

17

tagged releases on record

Recent releases

2.0.2 · 12 Apr 20192.0.1 · 23 Aug 20172.0.0 · 16 Aug 20171.0.13 · 21 Apr 20171.0.12 · 17 Apr 20171.0.11 · 5 Apr 20171.0.10 · 10 Aug 20151.0.9 · 18 Dec 20141.0.8 · 18 Dec 20141.0.7 · 21 Apr 20141.0.6 · 16 Apr 20141.0.5 · 26 Apr 20111.0.4 · 20 Apr 20111.0.3 · 13 Jan 2011

What its installed base runs

via wordpress.org

Share of active installs on each version of this plugin · 100% run the current release. Green is the current release; a big slice on older versions is a user base that has stopped updating.

v2.0 100%

Estimated active installs

The public count shows “1K+”. Our estimate pins where the real number sits.

tracked estimate
1K–2K ≈1.5K

Crossed into this band 22 months ago; a band this size takes about a year or more to cross, which places it about 50% of the way through.

Install history since 21 Apr 2015

1K31 Oct 2026

Recent reviews

All reviews on wp.org ↗
  1. ★★★★★ therealmoptop
    4.8y ago

    For a system that asks a lot of money for their service, you would think they would keep their features up to date. Nope. Can’t use this plugin, it just errors out. Can’t even use their embed javascript because you get a 403 server error.

    Read on wp.org ↗
  2. ★★★★★ Joe Bloggs
    7.6y ago

    It seem like you guys are trying to do too many things, but nothing works properly. Signed up with Formstack, your Drupal extension doesn’t work, this WordPress extension doesn’t work either. It sends people to Formstack for confirmation instead of staying on the same page. This plugin hasn’t been updated for 2 years. .. wtf! The only thing I’m stuck with are iFrames. These suck, but at least work. Get a grip guys. You charge a lot of money for your service. This topic was modified 7 years, 3 months ago by Joe Bloggs.

    Read on wp.org ↗
  3. ★★★★★ cbalth
    9.2y ago

    The previous plugin worked fine. This won’t authenticate and won’t allow me access to my forms. When saving new API and client ID it gives me this: Warning: Invalid argument supplied for foreach() in /home2/ogom/public_html/wp-content/plugins/formstack/plugin.php on line 288 Warning: Invalid argument supplied for foreach() in /home2/ogom/public_html/wp-content/plugins/formstack/plugin.php on line 288 Warning: Cannot modify header information – headers already sent by (output started at /home2/ogom/public_html/wp-content/plugins/formstack/plugin.php:288) in /home2/ogom/public_html/wp-includes/pluggable.php on line 1210

    Read on wp.org ↗
  4. ★★★★★ Nethers Web Design
    10.3y ago

    Form cache can be refreshed immediately to pull in new forms rather than wait an unknown period for the new form to appear in your list. With 300+ forms the old plugin was quite slow, this one loads the forms from a cache, thus loads relatively immediately compared to the APIv1. Overall huge improvement. I would have given it 4/5 stars because the forms aren’t ordered, but Michael who made the plugin is amazing and provided a workaround via the support thread. Quite easy fix with roughly 4 lines of code (not sure why they haven’t pushed the changes as 2.0.2). Formstack is a great product overall, integrating with major players. If I had to give a cost to formstack in general (not the plugin) higher than average cost would be the biggest drawback for most small businesses. Ignore the 1 star reviews, this plugin works just fine if you can handle 5 minutes of setup. This topic was modified 9 years, 3 months ago by Nethers Web Design. This topic was modified 9 years, 3 months ago by Nethers Web Design. This topic was modified 8 years, 8 months ago by Nethers Web Design. Reason: Plugin got better This topic was modified 8 years, 8 months ago by Nethers Web Design. Reason: Provided clarification This topic was modified 8 years, 8 months ago by Nethers Web Design. Reason: added details

    Read on wp.org ↗
  5. ★★★★★ Anonymous
    10.6y ago

    From Formstack’s own website… “compatible with up to WordPress 4.0” It wants you to use Formstack’s API v1 which is now deprecated and discouraged BY FORMSTACK! Do not install this plugin!

    Read on wp.org ↗
  6. ★★★★★ zwilson
    10.6y ago

    I’m not sure wrapping if this is just this version or all versions, but wrapping your site in an iframe doesn’t constitute as a functioning plugin. Doesn’t work on WP 4.5 as far as i’m concerned.

    Read on wp.org ↗
  7. ★★★★★ TravisJamison
    12.9y ago

    It works like it’s supposed to. Makes it easy.

    Read on wp.org ↗
  8. ★★★★★ douglaskarr
    13.8y ago

    There are some good form plugins but the advantage of having a plugin that integrates Forms into your WordPress instance while it can also be on landing pages, sites, mobile and other installations is a great advantage. The Formstack team has done an incredible job integrating third parties as well!

    Read on wp.org ↗

Security history

via Wordfence Intelligence

1 open vulnerability affects the current version (2.0.2). 0 of 1 disclosed are patched.

  1. 2025-12-05 CVE-2025-62738 Missing Authorization Affects <= 2.0.2 No patch available

Vulnerability records provided by Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. License and terms.

CVE records: Copyright 1999-2026 The MITRE Corporation. CVE terms of use.

Behavioral tests

via WP Hive

Automated install-time checks, tested on PHP 7.2.16 · WP 5.3

✓ Low memory footprint
✓ Low page-speed impact
✓ Runs on latest PHP + WP
✓ No PHP errors
✓ No JS errors
✓ Activates cleanly
✓ No resource errors
✓ No external HTTP errors
✓ Optimized database use
✕ Frequently updated

AI assistants

How it's measured →

Whether ChatGPT and Claude name this plugin when asked the category question, and whether the readme gives them something to quote.

Not measured yet for this plugin’s topics. Its tracked searches are not among the measured topics. See the topics measured so far.

Readme readiness

4 of 8 pass · checked 29 Oct 2026

Can an assistant quote this readme? Eight deterministic checks over the wp.org listing, no model involved.

  • ✓ Says what it does "This plugin allows you to easily embed Web forms built with Formstack's online form builder into your sideb..."
  • ! Has a FAQ Only 1 question in the FAQ; 3 or more gives an assistant something to match.
  • ! FAQ asks real questions 0 of 1 FAQ entries are headings, not questions ("undefined").
  • ! Names who it is for Never says who the plugin is for or what they use it for.
  • ✓ Names what it works with Mentions Mailchimp, PayPal, Salesforce.
  • ! Headings and lists 0 headings and 1 list; assistants quote headed sections and bullet lists, not paragraphs.
  • ✓ Enough to quote 1,047 characters of description.
  • ✓ Tags match the text All 5 tags appear in the text.

Growth timeline

Install-tier crossings we have observed, and how long each tier took to outgrow

  1. 2025-01-21 2K+ → 1K+ down after 1 days in tier
  2. 2025-01-20 1K+ → 2K+ up after 21 days in tier
  3. 2024-12-30 2K+ → 1K+ down after 1989 days in tier
  4. 2019-07-21 1K+ → 2K+ up

Competes with

The plugins that solve the same job, ranked by shared tags then reach, closest match first. The letter on the right is each plugin's health grade (A best, F worst).

Embed this report card

Drop a live Pulse card for Formstack Online Forms into a readme, a review or a deck. It updates itself.

<iframe src="https://plugins.wpmayor.com/embed/formstack" width="480" height="300" style="border:0" loading="lazy" title="Formstack Online Forms — Plugin Pulse"></iframe>
Preview card ↗

Formstack Online Forms: 1K+ active installs, 2.5★ (8 reviews). Plugin Pulse (WP Mayor), as of 2026-10-31. https://plugins.wpmayor.com/plugin/formstack

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