
Hotjar
Smartlook
Google Analytics
FullStory
Crazy Egg
Mixpanel
Mouseflow
Lucky Orange
DevToolKit.site
DuskTools.app
DevToys
CodeUtil.dev
SmallDevTools
CyberChef
IT Tools
Web ToolBox
Hotjar's product experience insights make it easy to understand what users are really doing on your site.
Visualize behavior on your site with Heatmaps
Eliminate guesswork with user Recordings
Understand the reasons behind behavior with Surveys and Incoming Feedback
DevToolKit is a collection of 19 free online developer tools that run entirely in the browser. No backend, no signup, no data ever leaves your machine. Built with Next.js 14 and Tailwind CSS. Tools include: JSON Formatter & Validator, JSON Tree Viewer with node path copying, YAML-JSON Converter, SQL Formatter, Base64 Encoder/Decoder (text + file drag & drop), URL Encoder, JWT Decoder, Hash Generator (SHA-1/256/384/512 via Web Crypto API), Password Generator, Cron Expression Parser with next run time calculation, PostgreSQL Config Generator (free PGTune alternative), UUID v4 Generator, QR Code Generator (PNG + SVG), Lorem Ipsum Generator, Regex Tester, Text Diff Checker, Unix Timestamp Converter, Color Converter (HEX/RGB/HSL), and HTTP Status Codes Reference. Every tool processes data locally using native browser APIs. No server-side processing, no cookies, no analytics tracking of input data.
Hotjar
DevToolKit.siteHotjar is recommended for small to medium-sized businesses, eCommerce sites, and startups looking to improve their website's user experience. It is also suitable for UX/UI designers and product managers who want detailed analytics without the complexity of larger enterprise-level tools. However, larger organizations may want to consider more robust analytics platforms that can handle and analyze larger volumes of data.
No DevToolKit.site videos yet. You could help us improve this page by suggesting one.
DevToolKit.site's answer:
DevToolKit runs 100% in the browser with zero signup. Unlike CyberChef, which has a steep learning curve with its recipe-based interface, DevToolKit gives you 19 standalone tools โ each with a clean, focused UI for a single task. Unlike DevToys, it works on any device with a browser โ no desktop app installation needed. And unlike SmallDevTools or similar online toolkits, DevToolKit includes unique tools like a PostgreSQL Config Generator (a free PGTune alternative), a Cron Expression Parser that calculates next 10 actual run times, and a JSON Tree Viewer with click-to-copy node paths. Every tool uses native browser APIs like Web Crypto for hashing โ no data is ever sent to a server, which matters if you're working with production JWTs, API keys, or database configs.
DevToolKit.site's answer:
Backend and full-stack developers who deal with JSON, JWTs, SQL, cron jobs, and PostgreSQL configuration on a daily basis. DevOps engineers who need quick encoding, hashing, or regex testing without installing CLI tools. Developers who care about data privacy and don't want to paste production tokens or API responses into random websites that may log input data.
DevToolKit.site's answer:
I'm a backend developer with 10+ years of experience in Python and Go, working on distributed systems and microservices. Every day I was jumping between 5-6 different sites to format JSON, decode a JWT, test a regex, or convert a timestamp โ each one bloated with ads, cookie banners, and signup walls. One evening I decided to build all the tools I actually use into a single place where everything runs client-side. The first version had 15 tools and took a weekend to build with Next.js and Tailwind CSS. After getting feedback, I added a PostgreSQL Config Generator (because PGTune hasn't been updated in years), a JSON Tree Viewer, and an HTTP Status Code Reference. It's now at 19 tools and growing based on what developers ask for.
DevToolKit.site's answer:
Next.js 14 with App Router for server-side rendering and per-page SEO metadata. Tailwind CSS for styling with a custom dark theme. Web Crypto API (crypto.subtle) for SHA-1/256/384/512 hashing and cryptographically secure password generation โ zero external crypto libraries. FileReader API for client-side Base64 file encoding. All tools are React components with no backend โ the entire app is static and deployed on Vercel. Each tool is a separate route with its own metadata, canonical URL, and sitemap entry for independent Google indexing.
DevToolKit.site's answer:
DevToolKit is a free tool with no accounts, so we don't track individual users. It's used by individual developers and small teams who need quick, private access to common dev utilities without enterprise overhead. The tool is designed for anyone who works with APIs, databases, or web development and wants a fast, ad-free, privacy-respecting alternative to existing online tools.
DevToolKit.site's answer:
Three things set DevToolKit apart. First, it includes tools you won't find in other online toolkits โ a PostgreSQL Config Generator that replaces PGTune with hardware-aware tuning calculations, a Cron Expression Parser that doesn't just describe the schedule but calculates the next 10 actual execution timestamps, and a JSON Tree Viewer where you click any node to copy its full JavaScript path like data.users[0].email. Second, every tool uses native browser APIs instead of external libraries โ hashing runs through Web Crypto API with hardware acceleration, passwords use crypto.getRandomValues(), file encoding uses FileReader โ meaning zero dependencies and zero data transmission. Third, each of the 19 tools lives on its own URL with dedicated SEO metadata, so you can bookmark devtoolkit.site/jwt-decoder/ and go straight to it โ no navigating through menus or loading tools you don't need.
I've been using Hotjar for a few months, and it's been a perfect tool for understanding how users interact with my website. The heatmaps and session recordings are especially helpful for identifying problem areas, and the feedback polls give me direct insights from visitors. The platform is easy to navigate, but Iโve noticed the session recordings can be a bit glitchy at times, and the free version is quite limited. Despite these small issues, Hotjar has definitely helped me improve user experience and optimize my siteโs performance.
Hotjar has been our go-to for optimizing UI, reducing bounce rates, and refining CTAs. Its powerful insights have been instrumental in enhancing user experience. A staple tool for data-driven decisions!
I don't like the service. It is very slow and very expensive. Not recommended it to others.
Based on our record, Hotjar seems to be more popular. It has been mentiond 13 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Hotjar Hotjar.com Heatmaps, session recordings, and feedback polls (free basic plan). - Source: dev.to / over 1 year ago
Hotjar โ Website Analytics and Reports . Free Plan allows 2000 pageviews/day. One hundred snapshots/day (max capacity: 300). Three snapshot heatmaps can be stored for 365 days. Unlimited Team Members. - Source: dev.to / over 2 years ago
So you can use heatmapping software such as Crazy Egg and Hotjar to see how your end users use your website. Source: over 2 years ago
If you have installed a heat map like hotjar.com then I will tell you that I used that for a month and found 5 or so dead ends where users were not getting to the cart or clicking on things that where not informative enough to lead to the next action. Source: about 3 years ago
Install hotjar.com - it's free. It's a heatmap that tracks how people navigate around your site. Why this matters? You can see where people drop off on your site (specifically, what content they see/don't see). Then, you can make informed decisions on what content is landing and what needs to change. Source: over 3 years ago
Smartlook - Qualitative analytics for websites and mobile apps Start understanding the 'whys' of your users' behaviors with clear, visual insights. With session recordings and event tracking, you get the complete picture.
DuskTools.app - 150+ free browser-based developer tools - no sign-up, no tracking, no backend. JSON formatter, Base64 encoder, regex tester, JWT decoder, UUID generator, HTTP status lookup, MIME types, port reference, cron builder & more. Everything runs locally in
Google Analytics - Improve your website to increase conversions, improve the user experience, and make more money using Google Analytics. Measure, understand and quantify engagement on your site with customized and in-depth reports.
DevToys - A collection of converters, formaters, encoders, generators and other tools for your Windows desktop.
FullStory - Meet FullStory, the app that captures all your customer experience data in one powerful platform.
CodeUtil.dev - Fast, private developer tools in your browser. JSON formatter, Regex tester, Cron generator, and 17 more.