Body text size
type:Smallest sampled text is 9px, below the 13px floor this check uses.
FixKeep body copy ≥15-16px; reserve sub-13px for fine print only.
01
Alternatives
3 tactics
subscription
ecommerce · Sep 21, 2026
opensourcestartups.com
We found more conversion tactics here than on 38% of the 211 multi-step e-commerce funnels we have measured.
3 conversion tactics detected
3 pages walked · measured by Roentgen 1.27.0
How this was measured
Measured by Roentgen 1.27.0 on 2026-09-21. A capture is read once and its measurements freeze there, so the stamp says which ruleset read this one.
This is detection coverage, not a verdict — it counts the conversion tactics we could prove are present, out of the 15 that apply to an ecommerce funnel. A low count means we did not detect those patterns, not that the funnel is weak.
Against all 1,781 multi-step funnels, more conversion tactics than 20% of them.
Walk 54 links on the entry page, 53 walkable. 2 matched a funnel step; we captured 3 pages in all, this one included.
The short version, in 5 parts
-
Proven on the page
3 conversion tactics detected, each backed by text on the page
- Displays a wall of customer reviews
9 star glyphs
- Answers buyer objections
// FREQUENTLY ASKED
- Puts proof in the first viewport
★ STARS 70.3k ⑂ FORKS 4.0k
-
Not seen
12 of 15 applicable tactics we checked for and did not see
- Press / "as seen in"
- Media logos or an "as seen in / featured in" claim borrowing publication credib…
- Us-vs-them comparison
- A comparison table framing the brand against alternatives.
- Scarcity / urgency copy
- Scarcity or time-pressure copy ("only N left", "selling fast", "limited time")…
+ 9 more
-
Flagged
3 of 11 build checks flagged, each with a fix
- Text contrast (WCAG AA)
- 86% of measurable text passes WCAG AA. 4+ runs fail.
- Body text size
- Smallest sampled text is 9px, below the 13px floor this check uses.
- Tap-target size (mobile)
- 38 of 69 interactive targets are under 44×44px on mobile.
-
Walked
3 pages walked, Alternatives to Slack
- Step 1
- Alternatives
- Step 2
- Notion
- Step 3
- Slack
-
In their words
The headline:
Open source alternatives to popular SaaS
- Promise
37 curated lists of open source alternatives to popular SaaS — Notion, Slack, Airtable, Auth0, Mailchimp, Str…
What we recorded
The funnel, frame by frame
3 steps walkedIn their own words
13 quotedthe entry page’s own title, headline, buttons and prices — quoted, never paraphrased
measuredextracted directly from the live page. a fact, not an opinion- Page title
Open Source Alternatives to Popular SaaS | Open Source Startups
- Meta description
37 curated lists of open source alternatives to popular SaaS — Notion, Slack, Airtable, Auth0, Mailchimp, Stripe, and more.
- Headline
Open source alternatives to popular SaaS
- Section headings
Open source alternatives to Notion
Open source alternatives to Slack
Open source alternatives to Airtable
Open source alternatives to Zapier
Open source alternatives to Figma
Open source alternatives to Datadog
Open source alternatives to Auth0
Open source alternatives to Mailchimp
- Buttons and links
SIGN IN
Buy Sell Startups
Elements
1 harvested
the atomic pieces — price anchors, ratings, guarantees — with their verbatim on-page text
measuredextracted directly from the live page. a fact, not an opinion
What we found
3 tacticsconversion tactics we could prove are present, with the on-page text that evidences each
measuredextracted directly from the live page. a fact, not an opinionproof2 of 5
Displays a wall of customer reviews
9 star glyphs
Puts proof in the first viewport
★ STARS 70.3k ⑂ FORKS 4.0k
objection1 of 2
Answers buyer objections
// FREQUENTLY ASKED
What we didn’t find
12 of 15 applicableapplicable tactics we checked for and did not see on any step we reached
measuredextracted directly from the live page. a fact, not an opinionWhat we didn’t see12 of 15 applicable
Press / "as seen in"
642 of the 2,417 funnels we checked
Us-vs-them comparison
441 of the 2,420 funnels we checked
Scarcity / urgency copy
125 of the 2,417 funnels we checked
Anchor / strikethrough pricing
116 of the 238 ecommerce funnels we checked
Free shipping
81 of the 238 ecommerce funnels we checked
Express wallets
41 of the 238 ecommerce funnels we checked
Money-back guarantee
33 of the 238 ecommerce funnels we checked
Proof at every step
26 of the 238 ecommerce funnels we checked
Countdown / urgency timer
18 of the 238 ecommerce funnels we checked
Per-unit price anchor
11 of the 238 ecommerce funnels we checked
Stacked free gifts
Subscription / auto-ship
Absence is a measurement, not a recommendation: we do not know why a tactic is missing, whether it belongs here, or whether adding it would change anything. Where a walk stopped early, a tactic living deeper would also read as not detected.
How well it’s built
11 run · 3 flaggedcontrast, mobile, typography, accessibility, weight — each with what would fix it
measuredextracted directly from the live page. a fact, not an opinion3 of 10 measured checks need work1 could not be measured — not counted either way
Text contrast (WCAG AA)
contrast:86% of measurable text passes WCAG AA. 4+ runs fail.
worst: “/v1/alternatives” at 2.56:1 (12px, #a1a1aa on #ffffff). needs 4.5:1
FixRaise text/background contrast to ≥4.5:1 (≥3:1 for large text), especially on CTAs and body copy.
Tap-target size (mobile)
mobile:38 of 69 interactive targets are under 44×44px on mobile.
smallest: “Toggle menu” at 32×32px
FixGive tappable controls a ≥44×44px hit area. the touch minimum.
Worth knowing3
Line length
18 paragraphs run past ~95 characters per line.
FixCap measure at ~60-75ch for comfortable reading.
type:Heading levels
2 headings skip a level (e.g. <h2> followed by <h4>). Screen-reader users navigate by this outline.
FixStep heading levels one at a time; use CSS for size, not a deeper level.
a11y:Skip link
No same-page “skip to content” link was found. Keyboard users tab through the whole nav on every page.
FixAdd a first-in-DOM <a href="#main"> that is visible on focus.
a11y:Not measurable1
Page weight
At least 0.3 MB across 130 measurable resources, but 50 cross-origin resources did not expose a size. The true weight cannot be determined from the page.
weight:Clear4
Mobile viewport · Language declared · Image alt text · Render-blocking resources
Brand kit
5 colour roles
palette by on-page usage · type rendered live
measuredextracted directly from the live page. a fact, not an opinionfull palette ordered by on-page usage %
accent#ffffff
bg#ffffff
surface#fafafa
text#3f3f46
See the roles applied
accent
Body copy in their text role, on a surface card.
the roles, doing their job
The quick brown fox44px
Jumps over the lazy dog18px
A subheading in their voice14px
Body copy set at their measured paragraph size. This is how their product reads to a first-time visitor. same family, same scale, same weight.
- List item one, at body scale
- List item two
- List item three
Type scale, weights & families
SIZE SCALE
10pxAa
11pxAa
12pxAa
13pxAa
14pxAa
18pxAa
44pxAa
WEIGHTS
Aa400
Aa500
Aa600
Aa700
FAMILIES
JetBrains Mono
rendered in their own type system · webfont not loaded. system fallback if uninstalled
Measured, found none
2 of 9 layerslayers we ran on this funnel that came back empty
measuredextracted directly from the live page. a fact, not an opinionSections — structural bands identified on this funnel, cropped from its own capture
Playbook match — which funnel play this page runs — measured, evidence-quoted
We ran these passes on the pages we captured and found nothing to show. That is a measurement of this funnel, not a recommendation — and it is a different statement from a layer we never ran, which does not appear here at all.
