Sizle Alternatives (Including When Sizle Wins)
Oleh Tsyupa · Founder, PDFTrackr · Updated 2026-08-20
What Sizle does better
Sizle's entry tier lists unlimited documents, unlimited team members and unlimited viewers, and PDFTrackr matches exactly none of the first two: it caps documents on both of its tiers, and it has no team or seat concept in its data model at all, so there is nobody to invite and nothing to share a workspace with. Sizle also puts a dealroom on that same entry tier, and PDFTrackr has no dealroom at any price. If several people on your side need to work the same documents together, this comparison ends there and the answer is not PDFTrackr.
The first page loses 34.4% of readers before page two — more than pages two through twelve lose combined (32.7 points).
Which is why retention and view history decide more than feature count: if you cannot look back at a reader's session, you cannot see where the document lost them.
Based on 3,017 validated reading sessions · 1,513 readers · 126 documents · extract 2026-07-10
If you would rather see this on a document of your own than read a comparison, create a free tracked link — 50 files, 50 links, 365 days of history, no card — or open the live demo to see the page-by-page readout on sample data first. The rest of this page is the comparison.
Side by side, at the price each one starts at
These two do not start from the same place, so a feature-for-feature grid would flatter one of them unfairly. Sizle publishes a 7-day full-access trial with no card, and its plan table starts at a paid tier afterwards; PDFTrackr costs nothing to run permanently and its cheapest paid tier is under the other's. What follows is what each one gives you at the price it starts at, and where each cell came from.
| PDFTrackr | Sizle | |
|---|---|---|
| Costs nothing to run permanently | Yes — no card at signup | No — 7-day full-access trial, no card |
| Page-by-page reading analytics | Included at no cost | Time-per-page, from the entry tier |
| Analytics retention | 365 days · 730 on Pro | Not published on its pricing page |
| Automated-open exclusion | Included at no cost | Not published on its pricing page |
| Shows what the filter removed | Included at no cost | Not published on its pricing page |
| Virus scan on every upload | Included at no cost | Not published on its pricing page |
| Documents | 50 at no cost · 500 on Pro | Unlimited on the entry tier |
| Team members | One account — no seat concept | Unlimited on the entry tier |
| Viewers | No cap on any plan | Unlimited on the entry tier |
| Dealrooms | Not offered at any tier | One on the entry tier |
| Cheapest paid tier | $9/mo · $84/yr, one flat account | $20/mo billed annually ($29/mo billed monthly) |
When Sizle is still the right choice
Three cases, and each one is a thing PDFTrackr has no answer to at any price — a comparison page that finds no real reason to choose the other product is not a comparison.
- Several people on your side need the same documents. The entry tier lists unlimited team members and unlimited viewers. PDFTrackr is one account with no seat concept anywhere in its data model, so there is nobody to invite and no way to hand a colleague the same view — a limitation of the product's shape rather than a paywall, which means paying more does not remove it.
- You want a room rather than a link per document. A dealroom is included on the entry tier and the count rises further up. PDFTrackr shares one file per link and reports analytics per document, so a bundle of a proposal plus appendix plus summary is three separate links with three separate sets of numbers, and there is no combined view of them.
- Document volume is genuinely unbounded. The entry tier lists unlimited documents, alongside tracked smart links. PDFTrackr caps files on both of its tiers, so an archive that grows without a ceiling will meet that ceiling — the cap is generous relative to what most senders hold, but it is a cap and this page will not pretend otherwise.
FAQ
Frequently asked questions
Is PDFTrackr a free alternative to Sizle?
It is an alternative that costs nothing to run permanently, which Sizle does not offer — its plan table publishes a 7-day full-access trial with no card and starts at a paid tier afterwards. On the tracking itself PDFTrackr reports page-by-page reading and keeps every view for 365 days at no cost. It is not an alternative to the dealroom or the shared workspace, which PDFTrackr does not build.
What does Sizle do that PDFTrackr does not?
Three things, all on its entry tier: unlimited documents, unlimited team members and viewers, and a dealroom. PDFTrackr caps documents on both tiers, has no team or seat concept in its data model, and has no dealroom at any price. If a shared workspace for several colleagues is the requirement, that is the end of the comparison.
Which one gives you page-level reading, and at what price?
PDFTrackr gives it away and does not claim to win on depth: this site's own record of Sizle — published at /free-docsend-alternatives and /best-pitch-deck-tracking-tools, and in the llms.txt entries for those two pages — is that time-per-page analytics is included from its entry tier rather than held back, so page-level reading is real on both sides. What differs is the price and the permanence. On PDFTrackr, per-page reading depth, time on each page, the drop-off point and exclusion of automated opens are on a plan that costs nothing to run permanently, and the dashboard shows what the filter removed. On the other side the same depth arrives with the entry tier, after a 7-day trial.
How long does each keep the reading history?
PDFTrackr keeps every view for 365 days at no cost and 730 days on Pro. No retention figure appeared on the pricing page read on 12 Aug 2026 for the other side — that is what the page did not carry, not a claim that it keeps nothing. Retention is the column the ten pricing pages compared at /free-document-tracking-software were quietest about — five of those ten carried no retention figure at all — which is why it leads this comparison.
When is PDFTrackr Pro worth $9 rather than staying free?
Not to unlock the analytics — page-by-page reading, de-botted counts and twelve months of history are all included at no cost and are the same data, not a preview. Pro is worth it once you pass 50 documents or 50 active share links, once files routinely run over 50MB, or once the same reader starts coming back: on the free plan the viewers list shows one row per visit, and Pro groups it into one row per reader with every visit they have made to that document, adds a real-time open alert in place of the morning digest, and emails you when someone returns.
For the wider ranking of every tool in this category, see the free PDF tracking tools we compared, and for how the free plan works in practice, PDFTrackr's free tracking plan.
Sources
- Sizle — Pricing (tier cards, prices, trial terms) (accessed 2026-08-12)
- Sizle — Pricing, compare table (entry-tier allowances: documents, team members, viewers, dealrooms) (accessed 2026-08-12)
Oleh Tsyupa
Founder, PDFTrackr
Has analysed over 3,000 tracked document-viewing sessions on PDFTrackr.
See the reading data on your own document before you choose
Upload a PDF, send a tracked link, and read it page by page — who opened it, how far each reader got, and what the automated-open filter removed. Free: 50 files, 50 links, 365 days of history, no card. Running your own document through both is a faster answer than any Sizle comparison.
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