PDF Ink Lite – Free PDF Watermark & Password Protection
by Canyon Webworks · eCommerce
Watermark and password protect PDFs with WooCommerce, EDD, and Download Monitor. No Ghostscript required, PHP 8+ compatible. Since 2014 (FKA WaterWoo)
88 health vs 68 average across 5,563 eCommerce plugins
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.
Excellent listing optimization
Well tuned across the board
Daily downloads
Since 2022-10-05 · 1,425 days · wp.org + Plugin Pulse archive
30-day downloads
Rolling 30-day volume · peaks are release surges
3.4K
now · peak 4.3K
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
Rating trend
Star average over time · dips mark rough releases
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.
Release cadence
Actively maintainedHow often this plugin actually ships. A steady rhythm is the maintenance signal a single "last updated" date can't show.
8
releases in the last 12 months
3mo ago
latest release · v4.0.13
8
tagged releases on record
Recent releases
What its installed base runs
via wordpress.orgShare of active installs on each version of this plugin. Green is the current release; a big slice on older versions is a user base that has stopped updating.
Estimated active installs
The public count shows “2K+”. Our estimate pins where the real number sits.
Refined from the date this plugin crossed into its current band.
Install history · since 2015-03-11 · 1,454 observations
Estimated value
What this plugin might earn a year, and what it might sell for. Modeled from public signals; we don't see anyone's books.
Est. annual revenue
Est. acquisition value
A small install base leaves thin data to model from. The recent download trend is too spiky to read. The range spans more than 10x because wp.org publishes install counts as broad bands, and conversion and price compound on top. Read the midpoint as an order of magnitude, not a valuation.
How we estimate this
Assumptions
- Free → paid conversion. 0.5%–2% of active installs pay for the pro tier. Typical for freemium WordPress plugins; the real rate varies a lot by product.
- Annual price per customer. $79–$199 a year, typical for eCommerce plugins rather than this plugin's own pricing.
- Acquisition multiple. 2x–4x annual revenue, the going range for small WordPress-plugin businesses, the typical range for a steady plugin.
- Install base. 2K–3K active installs, from our install estimate (wp.org only publishes the floor).
Inputs
- Active installs
- 2K–3K
- Category
- eCommerce
- Pro tier
- detected ("Lite" naming, the free tier of a paid product)
- Download trend
- volatile (a recent download spike, likely a release)
- Reviews
- 51
- Last updated
- 7 days ago
Revenue is installs × conversion × price; value is revenue × a typical acquisition multiple. Every factor is an assumption band, so the output is a wide range on purpose. If you're buying or selling, treat this as a starting point for due diligence.
Details
Latest updates
via wp.org changelogRecent releases and news for this plugin
- — Version 4.0.13 Tiny improvements for PHP 8.0+ compatibility Testing with WP 7.0 & WC 10.8 4.0.13
- — Version 4.0.12 Improvement to how file path constant ‘PDFINK_LITE_UPLOADS_PATH’ is set Testing with WC 10.6 4.0.12
- — Version 4.0.11 Update TCPDF to version 6.11.2 – will help with (but not guarantee) PHP 8.5 compatibility Update namespace vendor in TCPDI/TCPDF libraries to CanyonWebworks 4.0.11
- — Version 4.0.10 Remove cache-busting (it’s redundant) Update contributors, lang files, testing with WC 10.5 4.0.10
- — Version 4.0.9 Bust WP PDF Ink settings cache when watermarking settings changed Replace \r\n and \r with \n in EDD textareas while saving Remove EDD settings on plugin uninstall using edd_delete_option() Older changes are found in the 4.0.9
- — Version 4.0.8 Update TCPDF to version 6.10.1 Testing with WP 6.9 and WC 10.4 Testing with PHP 8.5 Deprecation notices for several filter hooks 4.0.8
Behavioral tests
via WP HiveAutomated install-time checks, tested on PHP 8.1.12 · WP 7.0
Languages
via translate.wordpress.orgTranslated into 40 languages, 0 at 90% or more
Plus 16 more locales with partial translations.
Growth timeline
Install-tier crossings we have observed, and how long each tier took to outgrow
- 2024-10-05 1K+ → 2K+ up after 1 days in tier
- 2024-10-04 2K+ → 1K+ down after 6 days in tier
- 2024-09-28 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).
-
Easy Media Download 9K+ installs · 4.0★ · 1 shared tag B -
DK PDF – WordPress PDF Generator 3K+ installs · 4.4★ · 1 shared tag B -
Premium Packages – Sell Digital Products Securely 2K+ installs · 3.9★ · 1 shared tag B -
codoc 2K+ installs · 3.6★ · 1 shared tag B -
PDF Catalog for WooCommerce 1K+ installs · 4.1★ · 1 shared tag A -
Easy Digital Downloads Featured Downloads 1K+ installs · 4.0★ · 1 shared tag C
Embed this report card
Drop a live Pulse card for PDF Ink Lite – Free PDF Watermark & Password Protection into a readme, a review or a deck. It updates itself.
<iframe src="https://plugins.wpmayor.com/embed/waterwoo-pdf" width="480" height="300" style="border:0" loading="lazy" title="PDF Ink Lite – Free PDF Watermark & Password Protection — Plugin Pulse"></iframe> PDF Ink Lite – Free PDF Watermark & Password Protection: 2K+ active installs, 4.6★ (51 reviews). Plugin Pulse (WP Mayor), as of 2026-08-29. https://plugins.wpmayor.com/plugin/waterwoo-pdf