by wpdesk 4 (1 reviews)

Flexible Invoices for WooCommerce – KSeF Add-on

Name: Flexible Invoices for WooCommerce – KSeF Add-on
Rating: 4.0 (1 reviews)
Author: wpdesk

Easily send invoices from Flexible Invoices straight to KSeF using the official Ministry of Finance API.

Flexible Invoices for WooCommerce ranks #7,787 among WordPress.org plugins with 700+ active installations, is #1,282 of 14,124 in the E-commerce category, a 4/5 rating from 1 reviews, and was last updated Oct 28, 2026. Data from WordPress.org, refreshed twice daily — see methodology.

Compatible with WP 7.1.4

v2.5.4 Current Version v2.5.4

Updated 1 week ago Last Update on 28 Oct, 2026

Refreshed 6 days ago Last Refreshed on

#1,282 of 14,124 in E-commerce Top 10% by installs Actively maintained

View on WordPress.org

Rank

#7,787

— No change

Active Installs

700+

— No change

KW Avg Position

13.3

— No change

Downloads

17K

+5 today

Support Resolved

100%

— No change

Rating

80%

Review 4 out of 5

4 (1 reviews)

Next Milestone 800

Total Progress 75%

700+ 800+

196

Ranks to Climb

Growth Needed

8,000,000

Active Installs

Pro

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Rank Changes

Current #7,787

Change

Best #

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Active Installs Growth

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Active Installs 0,000,000+

Growth +0.0%

Peak 0,000,000

Downloads Growth

Downloads

Growth

Peak

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Reviews & Ratings

4.0

1 reviews

Overall 80%

0 (0%)

1 (100%)

0 (0%)

Support Threads Overview

Resolved

Unresolved

Total Threads

Resolved

Unresolved

100%

Resolution Rate

Security History

Source: WPVulnerability

No known vulnerabilities on record for Flexible Invoices for WooCommerce. Checked 3 months ago.

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Plugin Details

Version: 2.5.4
Last Updated: Oct 28, 2026
Requires WP: 6.4+
Tested Up To: 7.1.4
PHP Version: 7.4 or higher
Author: wpdesk

Support & Rating

Rating: ★ ★ ★ ★ ☆ 4
Reviews: 1
Support Threads: 1
Resolved: 100%

Keywords

flexible invoices invoice invoices ksef woocommerce

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TL;DR

AI summary of the plugin's readme

This plugin is for WordPress and WooCommerce store owners who use Flexible Invoices and need to comply with Poland's KSeF e-invoicing system. It solves the problem of manually exporting invoices to KSeF by allowing direct submission and status tracking within the WordPress dashboard.

Direct invoice registration to KSeF
One-click sending of invoices
Bulk invoice registration to KSeF
KSeF status in invoice list
Dedicated KSeF metabox
KSeF reference ID display
KSeF API error messages
Integration with official KSeF API

Frequently Asked Questions

Common questions about Flexible Invoices for WooCommerce – KSeF Add-on

It allows you to send invoices from Flexible Invoices directly to KSeF.

Yes. All submitted invoices comply with KSeF requirements and the FA(2) format.

Yes. Bulk invoice registration to KSeF is supported.

No. This plugin is an extension and requires Flexible Invoices to be installed and active.

You can report security bugs through the Patchstack Vulnerability Disclosure Program. The Patchstack team help validate, triage and handle any security vulnerabilities. Report a security vulnerability.