E-Commerce · head to head
Hotjar vs Mercari
Mercari
E-Commerce
Japan-founded peer-to-peer resale marketplace with a flat seller commission
- From
- Free
- Rated
- -
The short version
- Each has a real cost: Hotjar website performance impact - Hotjar tracking code can cause noticeable slowdowns affecting site speed and Google rankings; Mercari the flat 10 percent commission plus payment processing fees applies even to very low-value items, so selling something for a few dollars can leave the seller with proportionally little after fees and packaging.
- They diverge on capability: Hotjar covers Heatmaps, Mercari covers Flat seller commission.
- Prices and features above were last checked on 1 September 2026.
Where they differ
Only the attributes on which Hotjar and Mercari actually diverge.
Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (E-Commerce).
What each one covers
Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.
Only in Hotjar
- Heatmaps
- Session recordings
- Feedback widgets
- Surveys
- User interviews
- Conversion funnels
- Form analytics
- Rage click detection
Only in Mercari
- Flat seller commission
- Prepaid shipping labels
- Local pickup and offers
- Smart pricing and price drops
- Mercari authenticity guarantee
- Instant or standard payout
What people use each for
The jobs each tool is most often brought in to do.
Hotjar
- User behavior analysisnot Mercari
- Conversion optimizationnot Mercari
- UX researchnot Mercari
- Customer feedbacknot Mercari
- Usability testingnot Mercari
Mercari
- Someone clearing out a wide mix of household items, not just clothing, in one listing appnot Hotjar
- A casual seller who wants a flat, predictable commission rather than a tiered fee structurenot Hotjar
- A buyer looking for secondhand electronics or general goods alongside apparelnot Hotjar
- A seller using local pickup to avoid shipping costs on bulky itemsnot Hotjar
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
Hotjar
- Website performance impact - Hotjar tracking code can cause noticeable slowdowns affecting site speed and Google rankings
- Session recording limits - free and lower-tier plans have monthly session recording caps that must be sampled above the limit
- Inaccurate heatmaps on dynamic pages - heatmaps fail to display correctly on pages with modals, sticky navigation bars, and pop-up overlays
- No mobile app - only web-based access available
- Not real-time analytics - includes slight data processing delay
Mercari
- The flat 10 percent commission plus payment processing fees applies even to very low-value items, so selling something for a few dollars can leave the seller with proportionally little after fees and packaging.
- Shipping is the seller's responsibility to arrange and package correctly, and disputes over item condition or damage in transit are common friction points in buyer-seller resolution.
- Instant payout carries its own fee on top of the selling and processing fees already deducted, so getting money out quickly costs more than waiting for standard transfer.
- Buyer protection and authenticity verification are limited outside the specific luxury authentication programme, so counterfeit risk on unverified categories rests largely on buyer judgement of listing photos and seller ratings.
- Market depth and typical sale prices vary significantly between the Japan and US versions of the app, and the two operate as largely separate marketplaces despite the shared brand.
Pricing, plan by plan
Hotjar
FreeNo published plan breakdown. See the Hotjar review.
Mercari
Free- SellingFree
- 10 percent selling fee on final sale price
- Separate payment processing fee, roughly 2.9 percent plus a fixed amount
- Instant payout carries an additional fee versus standard bank transfer
Which should you pick?
Choose Hotjar if
- You need heatmaps.
- You want to start without paying.
- You also want session recordings.
Choose Mercari if
- You need flat seller commission.
- You want to start without paying.
- You work on iOS, Android, Web.
- You also want prepaid shipping labels.
Questions people ask
- Is Hotjar or Mercari better?
- Neither clearly leads. Hotjar starts at Free and Mercari at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Hotjar or Mercari?
- Hotjar starts at Free and Mercari at Free.
- Does Hotjar or Mercari run on more platforms?
- Hotjar runs on Web. Mercari runs on iOS, Android, Web.
- Can I use Hotjar for free?
- Both have a free tier, so you can try either at no cost before committing.
- What is Hotjar best used for?
- Hotjar is most often used for user behavior analysis, conversion optimization, ux research, customer feedback. Of those, user behavior analysis and conversion optimization are not what Mercari is typically brought in for.
- What can Hotjar do that Mercari cannot?
- Hotjar covers Heatmaps, Session recordings, Feedback widgets, Surveys. Mercari covers Flat seller commission, Prepaid shipping labels, Local pickup and offers, Smart pricing and price drops.
Answered from the vendors’ own pages
Hotjar: Does Hotjar have a free tier?
Yes. Hotjar's free plan (now under Contentsquare) includes 200,000 monthly sessions, 10,000 session replays, and unlimited heatmaps, with no time limit on the free tier.
SourceMercari: How much does Mercari charge sellers?
A flat 10 percent selling fee on the final sale price in the US, plus a separate payment processing fee, both deducted from the seller payout.
Hotjar: Can I export my data from Hotjar?
Yes. Hotjar allows exporting heatmaps as JPG images, survey responses as CSV files, and session recording metadata. Advanced export options are available through the Hotjar API.
SourceMercari: Does the buyer pay any extra platform fee?
No separate platform fee is added at buyer checkout the way Vinted adds a buyer protection fee; the buyer pays the listed price plus shipping if not included.
Hotjar: Does Hotjar provide real-time analytics?
No. Hotjar has a slight delay in data processing and does not offer true real-time analytics compared to some competitors.
SourceMercari: Is Mercari the same marketplace in Japan and the US?
No, they operate as separate marketplaces under the same brand, with different inventory, pricing and fee history.
Hotjar: What integrations does Hotjar support?
Hotjar integrates with Google Analytics, Google Tag Manager, Slack, HubSpot, Jira, Linear, Microsoft Teams, Zapier, and hundreds of other tools through its API and partner integrations.
SourceRelated pages
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