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I already have a Chrome extension that automates an email workflow, but two pain points are holding it back: periodic crashes and sluggish load times when the extension spins up inside Gmail. My priority is to tighten the existing codebase so it runs faster and remains stable, then layer in a new advanced email-tracking component. Current situation • The extension injects UI elements into Gmail, monitors compose/send events, then triggers our email-automation logic. • Under heavier usage the background script occasionally throws errors that bring the whole process down. • Network calls and DOM manipulation feel bloated; opening the extension panel takes noticeably longer than it should. What I need you to do 1. Audit and refactor the JavaScript/Manifest V3 code to remove bottlenecks and memory leaks, ensuring smoother performance. 2. Hunt down and patch the crash sources so the extension remains stable even during large batch sends. 3. Implement an advanced tracking module—pixel-based or Gmail API driven—that records opens, clicks, and bounce events, and surfaces that data inside the existing UI. Acceptance criteria • No crashes after 500+ consecutive emails in a stress test. • UI panel loads in under 300 ms on standard hardware. • Tracking data logs correctly to our local storage endpoint and displays in the dashboard without affecting send speed. The project will involve Chrome Extension APIs, Gmail DOM manipulation, vanilla JavaScript (or a lightweight framework if you can justify it), and familiarity with performance-profiling tools such as Chrome DevTools and Lighthouse. I’ll share the current repository and a sample Gmail account for testing once we kick off.
Project ID: 40470636
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176 freelancers are bidding on average $464 USD for this job

⭐⭐⭐⭐⭐ 0As a premier web and app development enterprise, CnELIndia is uniquely equipped to help enhance and optimize your Chrome Email Extension. With a robust skillset prominently including PHP, Software Testing, as well as experience in Javascript, you can trust our expertise in not only spotting bottlenecks, Memory leaks but also fixing Network calls, DOM manipulation issues that are slowing down the extension. Our commitment to delivering high-quality projects within time and budget constraints also aligns well with your needs. We understand that the core requirement here is for enhanced stability and improved performance without compromising speed and we're confident we can meet those expectations flawlessly. We would ensure the revamping of your current codebase, adding performance-profiling tools such as Chrome DevTools and Lighthouse to track down crash sources while proposing a leaner framework if justified to speed up the process. We will persist until we achieve your acceptance criteria: no crashes after 500+ emails; a UI panel that loads under 300ms; implementation of advanced tracking module etc. In conclusion, by choosing CnELIndia for this project you're betting on proven experience, technical proficiency, and an unwavering commitment to excellence.
$500 USD in 7 days
9.0
9.0

Hi — Elias here from Miami. I see you’re looking to optimize your Chrome extension for email automation. It sounds like you’re focused on streamlining workflows and addressing pain points in the current setup. What usually matters most here is ensuring the extension remains reliable and maintains performance as you scale. A common issue in systems like this is handling API integrations effectively, especially as workflows become more complex. The tricky part is usually in managing state and user permissions, which can lead to inconsistencies if not handled properly. My approach would involve a thorough review of your existing code to identify bottlenecks and refactor where necessary. I prioritize stability and maintainability, ensuring the extension can adapt to future requirements without significant overhauls. I’ve worked on similar automation tools and understand the nuances of optimizing user experience alongside backend efficiency. A few questions to better understand the scope: Q1 – What specific pain points are you experiencing, and how do they affect your workflow? Q2 – Are there any specific API integrations that are critical for your extension's functionality? Q3 – What are your scaling expectations for this extension in the coming months? Happy to go through the details and suggest the best technical approach. Looking forward to hearing from you.
$500 USD in 3 days
8.3
8.3

Hi I have strong experience with Chrome Extension development, Manifest V3, Gmail DOM integration, background/service workers, content scripts, JavaScript performance profiling, and email workflow automation. The main technical challenge here is stabilizing the existing Gmail-injected extension while reducing panel load time, memory usage, network overhead, and crash risk during large batch sends. I can audit the current repository, profile DOM operations and background script errors, refactor heavy logic, improve message passing, debounce Gmail observers, and patch memory leaks or unhandled promise failures. I can also implement an advanced tracking module using tracking pixels, tracked links, bounce webhook handling, or Gmail API-based events depending on your current backend and compliance requirements. The tracking data can be logged to your local storage endpoint and surfaced inside the existing dashboard without slowing the send workflow. My focus would be making the extension stable under 500+ email stress tests, faster inside Gmail, and easier to maintain as the tracking features grow. Thanks, Hercules
$500 USD in 7 days
7.3
7.3

Hi there, I understand your extension operates by injecting its UI into the Gmail DOM and hooking into user events like compose and send. The core issue seems to be twofold: the background script is struggling under high-volume operations, causing the crashes, and inefficient DOM manipulation or data fetching is delaying the UI panel's initial render. Technical approach: We'll begin by profiling the extension with Chrome DevTools to pinpoint the exact memory leaks and long-running tasks. We will refactor the background script to handle batch operations asynchronously, likely using a queuing mechanism to prevent overload. For the frontend, we will optimize DOM selectors and defer non-critical network calls. The tracking module can be built using a lightweight pixel embed, ensuring it doesn't block the send process. Core modules: Performance & Stability Layer (Refactoring, Error Handling), Gmail DOM Interaction Engine, Asynchronous Background Task Processor, and the new Email Tracking Module (Open/Click/Bounce Logging). Implementation strategy: Our plan is to stabilize first, then optimize. We'll conduct a full code audit to resolve the crash-causing bugs. Next, we'll refactor to improve the UI load times. Only after the existing system meets your performance criteria will we integrate the new tracking module, followed by rigorous stress testing to validate the 500+ email benchmark. Regards, Rohit
$421 USD in 15 days
8.0
8.0

As an experienced Python developer, our team at STR Softwares LLP has a deep understanding of not only the language used in your current Chrome extension project but also the specific requirements you've laid out. We've successfully delivered projects similar to yours, implementing complex automations and optimizations for maximum efficiency. Our team's skill set includes API integrations and a profound knowledge of Google Chrome internals, so we're well-prepared to tackle your extension's pain points head-on. In addition to having seasoned senior developers as dedicated tech leads, we also have project managers with extensive experience in delivering successful projects on time. This means that we not only take care of writing quality code but also manage the overall project process efficiently, always meeting deadlines and maintaining an open line of communication for any clarifications or updates. Moreover, we understand the vital role that performance plays in your extension - from eliminating crashes under high usage to optimizing load times to less than 300ms.
$500 USD in 30 days
6.7
6.7

⭐⭐⭐⭐⭐ + 100% Job Score freelancer Hi, thank you for this chance to apply for your project. With strong Chrome Extension, Gmail DOM, and JavaScript performance optimization experience, I can audit and refactor your Manifest V3 extension to eliminate crashes, reduce load times, and improve stability during high-volume email workflows. I will profile bottlenecks, optimize background/content scripts and DOM interactions, then implement a reliable tracking layer for opens, clicks, and bounce events while keeping send performance unaffected and UI response fast. Ready to review the repo and begin testing immediately. Vinh
$300 USD in 7 days
6.4
6.4

As a seasoned full-stack developer with over a decade of experience, I feel uniquely poised to tackle the optimization and stability challenges your Chrome email extension is currently facing. My expertise spans across a wide range of technologies including JavaScript and PHP, both of which are crucial to troubleshooting and enhancing your codebase. I am fluent in popular JavaScript frameworks such as Vue.js and React, but I understand your preference for vanilla JS--efficient simplicity that caters specifically to your project needs is my style too. Moreover, I have an in-depth familiarity with Chrome DevTools, Lighthouse, and other performance-profiling tools. This allows me to strategically identify and root out any bottlenecks or memory leaks in your application, ensuring smoother performance even under heavy usage. My knowledge of Chrome Extension APIs also makes me well-versed in Gmail DOM manipulation which is central to your project requirements. In addition to addressing the stability issue with your extension and optimizing its performance, I bring another tier of value by implementing an advanced email-tracking module. Given my experience with third-party service integrations such as SendGrid or Twilio, integrating a tracking system should not pose any issues. Be it pixel-based or based on Gmail API, recording opens, clicks, bounce events and surfacing that data in a user-friendly manner is well within my capabilities.
$250 USD in 7 days
7.1
7.1

Hello! I am a US-based senior software engineer with extensive experience in frontend and backend development, and I’ve carefully read your project description regarding optimizing your Chrome email extension. I understand that you're facing two key pain points, and I'm here to help resolve those effectively. With over 15 years in software development, I specialize in PHP, JavaScript, and API integration, ensuring that the solutions I provide are not only technically robust but also practical for your workflow. I’ve built and optimized similar tools in the past, focusing on enhancing user experience and efficiency. To accomplish your project goals, I suggest a phased approach: 1. Identify and document the current pain points in your extension. 2. Implement targeted optimizations and conduct thorough testing. 3. Gather user feedback to refine the workflow further. Could you please clarify the following questions to help me better understand the project? 1. What specific pain points are you experiencing with the current extension? 2. Are there any particular features or enhancements you envision for the optimized version? I'm serious about delivering the right solution and would love the opportunity to chat further. Best, James Zappi
$500 USD in 3 days
6.2
6.2

Warm greetings! I specialize in Chrome Extension performance optimization and Gmail-based automation systems, with 9+ years of experience in JavaScript, Manifest V3 architecture, DOM injection optimization, and debugging large-scale browser workflows. Here’s how I can help: * Audit and refactor your MV3 extension to eliminate memory leaks, blocking calls, and inefficient DOM operations * Stabilize background/service worker logic to prevent crashes during high-volume email sending (500+ stress test target) * Optimize Gmail injection flow for faster UI load (targeting <300ms panel initialization) * Profile and streamline network calls, event listeners, and state handling for smoother execution * Implement advanced email tracking (pixel-based or Gmail API) for opens, clicks, and delivery signals * Ensure tracking data is logged efficiently without impacting send performance or UI responsiveness I focus on performance-critical debugging—especially for extensions interacting with complex DOM environments like Gmail—ensuring both speed and reliability under load. Quick question: is your current extension built fully in vanilla JS, or are you already using a framework like React or Vue inside the extension UI?
$500 USD in 7 days
6.0
6.0

Hello, With over a decade of diverse experience in Engineering, AI/ML, Embedded Systems, and IoT, I am confident I have the skills to resolve the performance issues and stabilize your Chrome email extension. As a solution-oriented developer, I have consistently delivered complex, production-ready systems in C++, JavaScript, and PHP , making me well-suited for the rigorous code refactoring required for your extension. Drawing on my proficiency with Gmail DOM manipulation and Chrome Extension APIs, together with my familiarity with performance-profiling tools such as Chrome DevTools and Lighthouse, we can uncover memory leaks and bottlenecks impeding performance. My knowledge in modularizing code aids in transforming the existing architecture into a leaner one that performs smoothly under high volume usage. Moreover, as an AI/ML practitioner who has built advanced automation and analytics platform, implementing an advanced tracking module will be second nature. Whether you prefer pixel-based or Gmail API driven approach, I assure you accurate data logging without affecting send speeds. Trust me to optimize your extension for stability and speed so it doesn't just meet but exceed reaction targets. Let's create a robust tool that empowers your email workflow! Thanks!
$750 USD in 6 days
6.2
6.2

Hi, Your project is a good fit for my Chrome extension and JavaScript debugging experience. I understand the priority is not rebuilding the extension, but stabilizing the existing Manifest V3 codebase, improving Gmail load performance, and adding reliable email tracking without slowing the send workflow. I can audit the background service worker, content scripts, Gmail DOM observers, network calls, storage usage, and UI injection logic to find memory leaks, race conditions, slow DOM operations, and crash sources. I can then refactor the code for faster panel loading, safer batch sending, better error handling, and cleaner async flow. For tracking, I can implement a pixel based or Gmail API driven module for opens, clicks, and bounce events, then log results to your endpoint and surface them inside the existing dashboard. I will test against the 500 plus email stress requirement and keep the implementation lightweight. Best, Justin
$500 USD in 7 days
5.9
5.9

Hi there, The crashes during batch sends and the slow Gmail panel startup are the right things to fix before adding tracking. Gmail DOM work can get messy fast, especially when observers keep stacking up or the background service worker wakes in a bad state. I’ve worked on Chrome extensions with Manifest V3, Gmail UI injection, background scripts, API calls, and performance debugging. I’d start by profiling startup, network calls, listeners, storage reads, and DOM mutation logic. Then I’d clean up the service worker flow, remove leaks, add safer retry/error handling, and stress test 500+ sends. After that I’d add the tracking piece for opens, clicks, and bounces, keeping writes to your local endpoint separate from the send path so it doesn’t slow delivery. I can start once the repo and test Gmail account are ready, and I’d aim for a working pass in 5 days. Do you already have a backend endpoint for click/open/bounce tracking, or should I also define the event payload and storage flow? Regards, Slavko
$250 USD in 2 days
5.5
5.5

Hello I understand your Chrome extension struggles with crashes and slow load times during heavy Gmail usage. I’d start by thoroughly auditing your Manifest V3 JavaScript code to pinpoint memory leaks and optimize DOM manipulation, ensuring the UI panel loads swiftly under 300 ms. Next, I’ll stabilize background scripts to prevent crashes even after 500+ emails, using Chrome DevTools for deep profiling. Finally, I’ll integrate an advanced email-tracking module via pixel tracking or Gmail API that logs opens, clicks, and bounces seamlessly into your dashboard without slowing sends. With my strong background in Chrome Extension APIs, vanilla JS, and performance tuning, I’m confident I can deliver a stable, fast solution. Could you share more about your current tracking setup and preferred tech for the new module? Best regards, AbdulHamid
$250 USD in 7 days
5.0
5.0

Hello there, I hope you are doing well. I’m an independent developer specializing in performance-focused Chrome extensions and frontend tooling. I work with MV3, Gmail DOM integration, and rigorous profiling to deliver faster, stable UX without surprises. I’ve refactored extensions to cut load times and fix crashes by modularizing background scripts, removing memory leaks, and slimming DOM interactions. I’ve implemented lightweight tracking modules and rendered results in a clean UI, ensuring minimal impact on send speed while delivering reliable open/click/bounce data via local storage endpoints. I can tackle your audit, refactor, and add an advanced tracking component. Expect a leaner codebase, crash resilience under heavy load, and a responsive panel under 300 ms. Please feel free to contact me so we can discuss more details. I am looking forward to the chance of working together. Best regards, Billy Bryan
$250 USD in 7 days
5.1
5.1

Interesting project, We will audit your Manifest V3 codebase, eliminate the crash sources in the background script, and build the advanced email tracking module on top of a stable, faster foundation. For the performance side, we will profile with Chrome DevTools to isolate memory leaks in DOM manipulation listeners. Batching MutationObserver callbacks and lazy loading the UI panel are two quick wins that typically cut load time well below 300 ms. A couple of quick things to confirm: 1) Is the tracking module expected to use injected pixels, the Gmail API, or whichever proves more reliable after testing? 2) Does the local storage endpoint already exist, or do we need to build that as well? The number quoted here is a starting estimate. The exact cost and timeline will be confirmed after we go through the full scope together. Looking forward to your response. Best regards, Faizan
$286 USD in 10 days
5.5
5.5

Hello, I can audit and optimize your existing Chrome extension to eliminate crashes and significantly improve load performance inside Gmail. I will refactor the Manifest V3 architecture, streamline background scripts, and remove memory leaks and DOM inefficiencies causing slow UI injection. I will profile the current code using Chrome DevTools and fix instability issues so it can reliably handle 500+ email operations without failure. I will also implement a robust email tracking module using either pixel tracking or Gmail API events to capture opens, clicks, and bounce signals. All tracking data will be integrated into your existing UI without impacting send performance or introducing latency. I will ensure the extension loads under 300 ms on standard hardware and remains stable under heavy batch usage. You will receive a cleaned production-ready codebase with clear documentation and test results from stress scenarios.
$500 USD in 7 days
5.3
5.3

Hey there, I'm Vishal Maharaj, a seasoned developer with 25 years of experience in PHP, JavaScript, Software Testing, C++ Programming, API Integration, and Frontend Development, based in Perth, Australia. I understand your need to optimize your Chrome email extension by addressing crashes and improving load times within Gmail. My approach would involve auditing and refactoring the codebase to enhance performance, resolving crash sources, and implementing an advanced email-tracking module to meet your requirements effectively. Let's discuss further details and kick off this project. Feel free to initiate the chat. Cheers, Vishal Maharaj
$500 USD in 5 days
5.8
5.8

Hi, I’ve thoroughly reviewed your Chrome extension’s current challenges regarding crashes and slow load times within Gmail. With extensive experience in JavaScript and Chrome Extension development, I specialize in performance optimization and stability improvements. I’ll start by auditing and refactoring your Manifest V3 code to eliminate bottlenecks and memory leaks, ensuring a smoother and faster startup. I’ll then identify and fix crash sources, enabling the extension to withstand high-volume email batches without failure. Finally, I will integrate a robust, pixel-based or Gmail API-driven tracking component that accurately captures opens, clicks, and bounces, displaying this data seamlessly in your existing dashboard without compromising speed. We can expect a fully optimized and stable extension ready for thorough stress testing within 10 days of project commencement. What tracking metrics are your highest priority for the new email-tracking module? Best regards,
$555 USD in 10 days
4.9
4.9

You called out crashes during heavy sends and slow panel startup inside Gmail. That pins this to background worker lifecycle issues and heavy DOM/network work during Gmail spin up. Most extensions hit the same root causes: leaked listeners and synchronous work in the service worker plus mutation observers that run too often. Fixing those removes the crashes and cuts load time. I recently stabilized CrowdAxis where long running background jobs pulled from 10 sources. I reduced memory use and eliminated intermittent failures under sustained load. Plan 1. Profile with Chrome DevTools and automated stress test to reproduce the 500+ send scenario 2. Refactor MV3 service worker and event wiring remove leaked listeners and move work to queued, async tasks 3. Optimize DOM injections cache selectors batch writes and replace expensive observers with targeted listeners 4. Build tracking module Gmail API first with pixel fallback nonblocking queue to your local storage endpoint and UI surface updates Do you want Gmail API tracking to be the default or keep pixel tracking primary? I will need repo access manifest and the test Gmail account to draft an architecture diagram and a short patch plan.
$500 USD in 7 days
4.8
4.8

Hello, I have experience debugging and optimizing complex software systems, including performance analysis, event-driven architectures, API integrations, and stability improvements. For this project, I would begin with a full audit of the existing Chrome extension to identify crash sources, memory leaks, inefficient DOM operations, and unnecessary network activity. I can optimize the Gmail integration, improve Manifest V3 service worker reliability, reduce UI load times, and implement a robust tracking solution for email opens, clicks, and bounce reporting while ensuring minimal impact on send performance. I would also perform stress testing and profiling using Chrome DevTools to verify stability under high-volume usage. Before starting, I would like to review the current codebase and understand the existing tracking architecture and backend endpoint requirements. I look forward to discussing the project in more detail.
$500 USD in 10 days
6.5
6.5

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