Software Alternatives, Accelerators & Startups

PDFTrackr VS Nullstack

Compare PDFTrackr VS Nullstack and see what are their differences

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PDFTrackr logo PDFTrackr

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.
Full-stack Javascript Components for one-dev armies
  • PDFTrackr Know if they actually read it - verified-human views
    Know if they actually read it - verified-human views //
    2026-07-24
  • PDFTrackr See the exactly page where they stopped
    See the exactly page where they stopped //
    2026-07-24
  • PDFTrackr Viewer sessions - who came back for a second look
    Viewer sessions - who came back for a second look //
    2026-07-24
  • PDFTrackr You decide who see it
    You decide who see it //
    2026-07-24
  • PDFTrackr Mobile viewer - no app or signup for recipients
    Mobile viewer - no app or signup for recipients //
    2026-07-24

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 of your counts so the numbers are real.

The part worth paying for is Signals: the analysis done for you. Instead of a table to decode, you see who came back for a second look, who's genuinely engaged, and who's worth a call right now, with a per-recipient verdict on whether a specific prospect actually read it and a real-time alert plus Reading Report the moment they open. That is the difference between guessing when to follow up and reaching out at the exact moment a buyer is interested, which is how deals get closed.

Built for people who make money from their documents: sales teams chasing proposals, consultants and agencies winning clients, and founders raising on a pitch deck.

Free is genuinely complete: 500MB, 50 files, full page-by-page analytics, 12-month history, and virus scanning, with no credit card. Pro ($9/month or $84/year) adds return-visitor Signals, real-time open alerts with Reading Reports, per-recipient verdicts, CSV export, bulk personalized links, folders, versioning, and viewer watermarking.

  • Nullstack Landing page
    Landing page //
    2023-07-26

PDFTrackr

$ Details
freemium $9.0 / Monthly (Pro (or $84/year))
Platforms
Web
Release Date
2025 August
Startup details
Country
Poland
Founder(s)
Oleh Tsyupa
Employees
1 - 9

Nullstack

Pricing URL
-
$ Details
Platforms
-
Release Date
-

PDFTrackr features and specs

  • Signals
    See who came back and who's worth a follow-up, so you act on real buyers
  • Reading Reports
    An emailed report of exactly how each document was read
  • Per-recipient verdict
    One honest line on whether a specific person actually read it
  • Viewer watermark
    Per-page watermark with the viewer's email and timestamp
  • Document versioning
    Replace the file behind a live link and restore prior versions
  • Bot-filtered counts
    Bots and email scanners are removed from your view counts, and the dashboard shows exactly what was filtered
  • Bulk links & CSV export
    Send personalized links to your whole list and export viewers to CSV

Nullstack features and specs

  • Full-Stack Capabilities
    Nullstack allows for the development of both client-side and server-side functionalities within a single project, providing a more unified development process.
  • Seamless SSR
    It offers built-in support for server-side rendering, improving performance and SEO without the need for complex configurations.
  • Zero tooling
    Nullstack provides a setup that requires minimal configuration and does not depend heavily on additional tools, simplifying the development workflow.
  • Component-based Architecture
    Promotes the use of components, encouraging modularity and reusability of code, which can improve maintainability and scalability of applications.
  • Hot Module Replacement
    Supports HMR, allowing developers to see immediate changes in their applications without refreshing the entire page, improving development efficiency.

Possible disadvantages of Nullstack

  • Smaller Community
    Compared to more established frameworks, Nullstack has a smaller community, which can result in fewer resources and third-party tools.
  • Learning Curve
    Developers need to learn the Nullstack-specific ways of handling both front-end and back-end development, which might be a hurdle for those accustomed to other frameworks.
  • Limited Ecosystem
    Due to its newer and less widely adopted nature, there might be limited third-party libraries and plugins readily available compared to more mature frameworks.
  • Rapidly Evolving
    Being relatively new and possibly evolving quickly, developers might face breaking changes more frequently compared to more established technologies.

Analysis of PDFTrackr

Overall verdict

  • PDFTrackr appears to be a solid, purpose-built tool for those who need to share PDF documents and track how recipients engage with them, offering useful analytics and security features in an easy-to-use package.

Why this product is good

  • Provides detailed document tracking and analytics, such as views, time spent, and page-by-page engagement
  • Allows secure sharing of PDFs with access controls like password protection and link expiration
  • Helps sales, marketing, and business teams understand recipient behavior to follow up more effectively
  • Typically offers a simple interface that requires no complicated setup or technical expertise
  • Can improve accountability and insight compared to sending plain email attachments

Recommended for

  • Sales teams who want to know when and how prospects engage with proposals or pitch decks
  • Marketers distributing whitepapers, brochures, or lead-generation content
  • Freelancers and consultants sending contracts or reports to clients
  • Businesses needing secure, controlled document sharing with expiring or password-protected links
  • Anyone wanting analytics on how their PDFs are viewed rather than sending untracked attachments

PDFTrackr videos

Tracking with Page-by-Page Analytics

Nullstack videos

Full-stack with Nullstack - Part 3

More videos:

  • Review - nullstack ship tracker
  • Review - Como fazer um Hello World com Nullstack passo a passo

Category Popularity

0-100% (relative to PDFTrackr and Nullstack)
PDF
100 100%
0% 0
JavaScript
0 0%
100% 100
PDF Tools
100 100%
0% 0
Framework
0 0%
100% 100

Questions & Answers

As answered by people managing PDFTrackr and Nullstack.

Which are the primary technologies used for building your product?

PDFTrackr's answer

Next.js, TypeScript, PostgreSQL, React, Docker, DigitalOcean, Cloudflare

What makes your product unique?

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.

Why should a person choose your product over its competitors?

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.

How would you describe the primary audience of your product?

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.

What's the story behind your product?

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.

Who are some of the biggest customers of your product?

PDFTrackr's answer

  • Sales and business-development teams
  • Consultants
  • Agencies
  • Founders sharing pitch decks

User comments

Share your experience with using PDFTrackr and Nullstack. For example, how are they different and which one is better?
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Reviews

These are some of the external sources and on-site user reviews we've used to compare PDFTrackr and Nullstack

PDFTrackr Reviews

  1. julidovzhanytsia
    Finally something simple for tracking proposals

    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 at which is super useful - noticed one client spent ages on my portfolio but skipped pricing, so i knew to focus on value not cost. the free plan is enough for me (i send maybe 15 proposals a month)

    ๐Ÿ‘ Pros:    Literally took 2 mins to figure out|Shows what pages people actually read|Free 500mb

Nullstack Reviews

We have no reviews of Nullstack yet.
Be the first one to post

What are some alternatives?

When comparing PDFTrackr and Nullstack, you can also consider the following products

PDFtoLink.io - Convert your PDF documents into shareable links instantly. Fast, secure, and reliable PDF to link conversion service.

Deno - A secure runtime for JavaScript and TypeScript built with V8, Rust, and Tokio.

Papermark - Papermark is the open-source DocSend alternative with built-in analytics and custom domains.

Doc2Link - Upload PDF & Share Online, 100% Free

PDFToLink.im - PDF To Link is a free online tool that quickly converts PDFs to shareable links with secure hosting, privacy settings, and works on all devices.

Dropbox DocSend - Dropbox DocSend is a secure file and document sharing solution that gives users analytics and control of document in their critical workflows. Key features include sending documents as secure links, eSignature, and customizable virtual data rooms.