Check your own site's tracking, SEO and conversion, see what a competitor runs, and show your developer exactly what to fix. No account, no paid plan, and nothing leaves your browser.
Is every tag and event really firing?Hitline: events, GTM and consent, liveDevTools
What do Google and AI crawlers really see?Serpline: SEO score, render and AI botsSide panel
What is this competitor running?Rivaline: stack, ads and brand kitSide panel
Why is this landing page not converting?Foldline: 27 checks and a scoreSide panel
How do I show exactly what to change?Markline: capture, mark up, sharePopup
Every tool exports a one-page PDF
The tools
Five extensions, one job each
Four look at your own site, one looks at your competitors. Each opens next to the page you are on, answers one question well and gives you a report you can send.
What do you do?
All five tools. Pick a role to see where to start.
HitlineAnalysts and marketers
Is every tag and event really firing?
Watch GA4, Meta, TikTok and Google Ads events as they fire, check GTM, server-side GTM and consent, then export an audit.
Live event feed for each platform
GTM, server-side GTM and Consent Mode checks
Your tracking plan against what really fires
Coming soon
SerplineSEO specialists
What do Google and AI crawlers really see?
SEO basics with a score, a Google preview, raw HTML against the rendered page, links with status and AI crawler access.
Score and Google result preview
Raw HTML against the JavaScript render
Which AI bots robots.txt lets in
Coming soon
RivalineMarketers, agencies, sales
What is this competitor running?
Their marketing stack and its gaps, their ads in four ad libraries and their brand colors and fonts.
Martech stack by category, with gaps
Meta, Google, TikTok and LinkedIn ad libraries
Brand colors, fonts and main button
Coming soon
FoldlineCampaign managers, CRO
Why is this landing page not converting?
27 checks on the first screen, form, trust, mobile, speed and contact, with a fix for every issue.
Fold line drawn on the page
Desktop and mobile score
Fixes to send to your developer
Coming soon
MarklineAgencies, QA, designers
How do I show exactly what to change?
Capture the page, mark it up with arrows, numbered notes and blur, then download or copy it.
Visible, full page, area or element
Emails and phone numbers blurred for you
PNG or a one-page PDF summary
Coming soon
What each tool looks at
One page, five questions
Your site or a competitor's, every page has the same five places worth a look. Click a number to see which tool checks it.
Spring sale: 30% off all plants | Greenly
GreenlyPlantsPotsCare
Fresh plants, delivered in two days
Shop the sale
Fold
The title in the tab
Will Google and AI search show this page well?
What Serpline tells you
Where Google cuts the title and description
Whether the H1 and text need JavaScript to appear
Which AI crawlers robots.txt lets in
Serpline
The brand and what runs behind it
What is this site built and advertised with?
What Rivaline tells you
Its marketing tools by category, with the gaps
Its ads in four ad libraries, one click each
Its colors, fonts and main button, ready to copy
Rivaline
Anything you want changed
How do I show the developer exactly what to fix?
What Markline tells you
A capture of the area, element or full page
Arrows, boxes and numbered notes on top
Emails and phone numbers blurred before you share
Markline
The click that should count
Does this click reach every ad platform?
What Hitline tells you
Each event as it fires in GA4, Meta, TikTok and Google Ads
What GTM, server-side GTM and consent did with it
Events your tracking plan expects but never see
Hitline
The first screen
Do visitors see enough to act before they scroll?
What Foldline tells you
Where the fold sits on desktop and on phones
Whether the main button and headline are above it
A score and a fix for every issue on the page
Foldline
Same promise in every tool
Your pages stay in your browser
Free, no account
No sign-up, no trial, no paid plan. Install and use.
Only after your click
A tool reads a tab when you open it there, and no other tab.
Nothing is sent
Results are made in your browser. No servers, no tracking inside the extensions.
A report to send
Every tool turns its result into a one-page PDF you can share.
Free web tools
Try it without installing anything
Four small tools that run right on this site, built on the same code as the extensions.
Ad library finder
Search one brand in the Meta, Google, TikTok and LinkedIn ad libraries at once.
Coming soon
Landing page score
Tick what your page has and get the score Foldline would give it.
Coming soon
Google preview
See where Google cuts your title and description on desktop and mobile.
Coming soon
Annotate an image
Drop a screenshot, add arrows, notes and blur, then download a PNG.
Yes. There is no paid plan and no trial. They are free because they show the kind of work I do for clients: if you need the fixes done, you know where to find me.
What data do the extensions collect?
None. Each extension saves only its own settings on your computer. The pages you check are read in your browser and nothing is sent to a server.
Do they slow down Chrome?
No. Nothing runs in the background. A tool only works on a tab after you click its icon or press its shortcut there.
Which one should I install first?
Pick your role in the tool list above. If you run paid campaigns, start with Hitline: broken tracking costs the most and is the hardest to see.
Can I use them for client work?
Yes. Agencies use the PDF reports in audits and pitches. The reports carry a small "Made with" line and nothing else.
Which languages do they support?
English and Azerbaijani. You can switch the language in each tool's settings.
Built by one person
Need the fixes done, not just found?
I am Shamistan Isayev. I work on analytics, server-side tracking and CRO, and I built these tools for the checks I run on every project. When you want someone to fix what they find, book a call.