
Papermark
Dropbox DocSend
PDFtoLink.io
Attach
Digify
HTMLRadar
FileSeen
See who really read your proposal, deck, or report, with bots filtered out of your counts. Signals then tell you who's interested and worth a follow-up, so you follow up at the right moment and win more deals. Free; Pro $9/mo or $84/yr.

Paper.js
GoJS
p5.js
Three.js
Konva
jsPlumb
mxGraph
Processing.js is an open programming language, port of the ...
Which is more popular?
Based on our record, Processing.js seems to be more popular. It has been mentioned 1 time since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | pdftrackr.com | github.com |
| Pricing | — | |
| Platforms | — | |
| Company | Startup from Poland · 1 - 9 employees · 2025 | — |
| Listed in |
In their own words, as submitted to SaaSHub.


Every proposal, pitch deck, or client report you send can win or lose a deal, and PDFTrackr tells you exactly how it landed. Share it as a secure tracked link and see who opened it, which pages they read, how long they spent, and where they dropped off, with bots and email scanners filtered out...
No description of Processing.js yet.
What each product offers, as listed by its team.


Possible disadvantages
An editorial look at what each product does well and who it suits.


Overall verdict
Why this product is good
Recommended for
No analysis of Processing.js yet.
Walkthroughs and reviews on video.
Tracking with Page-by-Page Analytics
No Processing.js videos yet. You could help us improve this page by suggesting one.
How often each product is chosen within a category, 0–100% relative to the other.


As answered by people managing PDFTrackr and Processing.js.
PDFTrackr's answer
Next.js, TypeScript, PostgreSQL, React, Docker, DigitalOcean, Cloudflare
PDFTrackr's answer
It's the only PDF tracker that shows you which views were real. Bots and email scanners are filtered out of your counts automatically, and the dashboard shows exactly what it removed. Then Signals tell you who came back and who's worth a follow-up, with a per-recipient verdict on whether a specific person read it, so you act on real buyers instead of inflated numbers.
PDFTrackr's answer
Most trackers count every open, including bots and email scanners that never read a word. PDFTrackr filters them out and shows its work, so the numbers are real. Then Signals do the analysis for you: who's genuinely engaged, who's worth a call now, plus a per-recipient verdict and real-time alerts with emailed Reading Reports. Full page-by-page analytics are free with a 12-month history and virus scanning, no credit card; Pro is $9/month or $84/year.
PDFTrackr's answer
Sales and business-development teams, consultants, agencies, and founders raising on a pitch deck. Anyone who sends proposals, decks, and reports and needs to know who actually read them and when to follow up.
PDFTrackr's answer
Built to answer the question every sender has: did they actually read it, and when should I follow up? Instead of a vanity view counter that inflates numbers with bots, PDFTrackr filters out the noise and turns real reads into a shortlist of who's worth a call.
PDFTrackr's answer
Share your experience with using PDFTrackr and Processing.js. For example, how are they different and which one is better?
External articles and on-site reviews we used to compare the two products.


I'm a photographer, been using this for 2 weeks after getting fed up with papermark. i just need to know if brides open my wedding packages, not run a fortune 500 data room lol. pdftrackr tells me what pages they look...
Processing.js is a JavaScript library that uses the Processing visual programming language. It is web-oriented and lets you bring the power of Processing to create data visualizations for your web pages. Processing.js...
Recommendations tracked on public social media and blogs since March 2021.


Tracking PDFTrackr since Sep 2025.
With processing.js I think you mean p5.js, since the development of processing.js has been archived in 2018 (https://github.com/processing-js/processing-js ). Source: almost 4 years ago
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