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I’m looking for a clean, well-commented Tampermonkey userscript that can sit in my browser and let me rewrite or insert snippets of text on any site I choose. The idea is to keep the core logic universal, then expose a simple place in the code where I can drop in my own rules—whether that’s swapping words, adding a sentence, or reshaping a headline. Because I may target very different pages over time, the script needs: • A lightweight way to scope rules per domain or URL pattern. • Multiple matching methods I can toggle (keywords, CSS selectors, or even a regex block if needed). • A plain object or JSON section at the top where I declare “find / replace / insert” instructions without touching the main logic. Please write it in vanilla JavaScript, rely only on the Tampermonkey/Greasemonkey API, and comment each section so I understand what’s happening. When you hand it over, include a quick read-me explaining where to paste new rules and how to limit them to specific sites. I’ll consider the job done when I can install the script, add a sample rule myself, refresh a page, and see the text change instantly.
Project ID: 40539731
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180 freelancers are bidding on average $116 USD for this job

Hi, there. I have carefully reviewed the project requirements for Universal Tampermonkey Text Editor. It is clear that you are looking for a design that is not only visually modern but also highly effective at turning your visitors into active customers. My team and I specialize in UI/UX design and frontend development that balances aesthetic appeal with high-conversion functionality. We have a proven track record of helping businesses in United Kingdom improve their user engagement by focusing on intuitive navigation, clean interface design, and responsive performance using PHP, Web Development, JavaScript, Web Scraping, CSS. Our approach is to treat your interface as a tool for business growth. Before we start with any design work, we focus on understanding your specific user journey to ensure every element on the screen serves a purpose. We have helped other clients move from high bounce rates to improved retention by refining the user experience. To help me understand the specific design direction you are aiming for, I have one quick question: Are you looking to refresh an existing interface to improve current performance, or are you building a new user experience from the ground up? Knowing this helps me determine the best way to approach the wireframes and design logic. I am available for a discovery call to discuss your vision and current design needs whenever you are ready. Best regards Kausar and the Team
$180 USD in 3 days
8.3
8.3

⭐⭐⭐⭐⭐ Create a Tampermonkey Userscript for Text Modification ❇️ Hi My Friend, I hope you are doing well. I've reviewed your project requirements and understand you're looking for a Tampermonkey userscript that allows you to modify text on any website. Look no further; Zohaib is here to help you! My team has completed 50+ similar projects for userscripts. I will build a clean, well-commented script in vanilla JavaScript that meets your needs. This script will allow you to add, replace, or reshape text easily. ➡️ Why Me? I can easily create your Tampermonkey userscript as I have 5 years of experience in JavaScript development, focusing on userscripts and browser automation. My expertise includes working with APIs, debugging, and writing clear documentation. Additionally, I have a strong grip on other relevant technologies, ensuring your project is in capable hands. ➡️ Let's have a quick chat to discuss your project in detail. I can show you samples of my previous work and how I can deliver exactly what you need. Looking forward to chatting with you! ➡️ Skills & Experience: ✅ JavaScript ✅ Tampermonkey API ✅ Userscript Development ✅ Debugging ✅ API Integration ✅ CSS Selectors ✅ Regular Expressions ✅ Code Documentation ✅ JSON Handling ✅ Web Development ✅ Version Control ✅ Problem Solving Waiting for your response! Best Regards, Zohaib
$150 USD in 2 days
8.0
8.0

Greetings, You’re looking to create a Tampermonkey userscript that allows for easy text manipulation across various websites, which sounds like a fantastic project! The goal is to have a flexible script where you can simply input your own rules without digging into the main code. I can definitely help with that. My approach would be to develop a clean and modular script in vanilla JavaScript, utilizing the Tampermonkey API. I’ll ensure that the core logic remains universal while allowing you to define specific rules in a clear JSON format at the top. This way, you can easily add or modify text replacements, and I’ll make sure to include detailed comments throughout the code for clarity. Additionally, I can implement the scoping feature you need for different domains and provide options for various matching methods. Once everything is set up, I’ll include a straightforward read-me to guide you through the process. Best regards, Saba Ehsan
$150 USD in 2 days
7.4
7.4

Hello, With over a decade of experience, our team at WellSpring Infotech is well-versed in problem-solving and delivering high-quality custom web solutions - exactly what your project demands! We understand your need for a lightweight, efficient, and highly customizable Tampermonkey script that can be tailored to different site rules. Our expertise in JavaScript combined with a clear focus on clean code ensures that we can create a script precisely meeting your requirements. Moreover, you can trust us to provide detailed commenting within the script for easy comprehension. We are adept at utilizing the full potential of Tampermonkey API for streamlined functionality. Rest assured, we will strictly adhere to Vanilla JavaScript to guarantee compatibility with your desired platform. At WellSpring Infotech, our client-focused approach is deeply embedded within the core of our company. This naturally translates into transparent communication and on-time project delivery. Coupled with our long-term technical support, we go the extra mile to ensure not just your short-term satisfaction but also a successful long-term usage of our product. Thank you
$250 USD in 5 days
8.0
8.0

Hello, I see you're looking for a Tampermonkey userscript that allows you to easily modify text on various websites. The goal is to create a flexible script where you can define your own text replacement rules without diving into the main code. I’d approach this by building a clear structure for your rules, ensuring it’s simple to add or modify instructions at the top of the script. With 7+ years of web development experience, I’ll write this in vanilla JavaScript, using the Tampermonkey API, and ensure every part of the code is well-commented for your understanding. I’ll also include a straightforward read-me to guide you through adding new rules and scoping them to specific domains. One question I have is: how complex do you envision the text changes being? Are they mainly simple replacements, or do you expect to implement more intricate alterations over time? Best regards, Ivan Mandinski
$50 USD in 3 days
7.5
7.5

Hello, I’ve carefully reviewed your project requirements and they align very well with work I’ve completed successfully in the past. I’m confident I can deliver this exactly the way you expect — clean, reliable, and scalable. If you’d like, I can quickly walk you through a similar project I completed and explain how I’d approach yours step-by-step. I’m also happy to jump on a quick audio or video call to clarify anything. 410+ verified 5★ reviews, 538+ completed projects, Full-stack expert: CMS (WordPress, Shopify, Wix, Framer, Squarespace, Magento 2, OpenCart) Python, PHP, Laravel, React.js , node.js n8n, Zapier, AI agents. Always on time, within budget, Free 1-month post-delivery support you can check my skills and reviews here - https://www.freelancer.com/u/zahi9 Looking forward to your response. Best regards, Zahidul
$140 USD in 7 days
7.7
7.7

Hi I can build a clean, well-commented Tampermonkey userscript that lets you rewrite, replace, or insert text snippets on selected websites through a simple rule configuration section. I have experience with vanilla JavaScript, Tampermonkey/Greasemonkey APIs, DOM manipulation, MutationObserver, CSS selectors, regex matching, URL pattern matching, and browser-side automation. The main technical problem is keeping the script flexible across different websites without forcing you to edit the core logic every time a new rule is needed. My approach would be to place a clear JSON-style rules object at the top where each rule defines the target domain, match type, selector or keyword, action, and replacement or inserted text. The script can support keyword replacement, selector-based edits, regex-based matching, and insert-before or insert-after behavior while staying lightweight and dependency-free. I would also include MutationObserver support so text changes still apply when pages load content dynamically after the initial refresh. Each section would be clearly commented, and the read-me would explain how to add rules, limit them to specific URLs, and test changes safely. The final result would be an easy-to-maintain userscript you can install, customize, refresh, and immediately see working text changes. Thanks, Hercules
$140 USD in 7 days
7.4
7.4

Hi, This is a fun one and right in my wheelhouse. A universal text rewriter as a userscript is very doable, and the way you've described it, with a clean rules section up top that you edit without touching the engine underneath, is exactly how I'd build it anyway. That separation is what keeps it usable long term. The core idea I'd go with is a single config array at the top where each rule says which domains or URL patterns it applies to, how it matches (keyword, CSS selector, or regex, toggleable per rule), and what it does (find and replace, insert, or reshape). The main logic just reads that config and runs, so you never have to dig into the guts to add a new rule. I'd also handle the tricky part that trips up a lot of these scripts, which is pages that load content after the fact. A MutationObserver makes sure your rules still fire on stuff that appears dynamically, not just what's there on first load. You'd get the commented script plus a short read-me showing exactly where to paste rules and how to scope them to specific sites. Stelian
$140 USD in 7 days
7.0
7.0

Hi, I'm an experienced userscript developer with a background in creating userscripts for Greasemonkey and Tampermonkey extensions. I can develop a rule-based Tampermonkey userscript that allows you to write custom-defined rules, enabling you to rewrite and insert snippets of text on the websites of your choice. The script will include a REWRITE_RULES array at the top, where you can specify rules as objects targeting specific domains or URL patterns. Additionally, the script allows you to select DOM elements to find and replace text using keywords, regular expressions, and CSS selectors. You won't need to modify the main logic to change the configuration. For AJAX-laden pages that load content dynamically, the script allows you to reapply the rules using something called MutationObserver, which is part of the browser API. I will provide you with the code written in vanilla JavaScript, without relying on any external libraries, and I will include comments to help you define rules and customize the functionality. I am dedicated and committed to delivering quality work. You won't regret hiring me! Let's discuss your project together!
$50 USD in 1 day
6.8
6.8

Hello! We can build a universal Tampermonkey script for your text rewrite and insert rules. 1. Do you need the script to handle dynamically loaded content as well? 2. Do you already have sample rule cases or target sites for the first version? — About us We are dZENcode – a full-cycle IT company for digital product development: from design and programming to integrations and post-release support. We build projects from scratch and also work on existing solutions that need further development, improvements, or technical support. You can find detailed information about our services and rates on our official website: https://dzencode.com. Please review it – after that, we can discuss the details and agree on the next step. ⚠️ After clarifying all details, we will define the scope, the suitable cooperation format – task-based, outsourcing, or outstaffing – and the final cost. Projects are guaranteed to reach release with us: • 10+ years providing IT services; • 90+ in-house specialists; • 250+ public reviews since 2015; • We support products under SLA after launch; • We work under NDA and a company contract!
$140 USD in 7 days
6.7
6.7

With over 12 years of experience in full-stack development and deep expertise in JavaScript, PHP, and Tampermonkey/Greasemonkey API, I believe my team and I are well-positioned to take on your Universal Tampermonkey Text Editor project. Our focus on clean, understandable code with extensive comments will make it easy for you to understand and modify the script according to your evolving needs. Given the unique nature of your requirements, our experience in building web-based automation systems and APIs will be invaluable. We'll carefully implement the suggested approaches to rule matching (keywords, CSS selectors, or even a regex block) ensuring the code remains lightweight and offers a smooth user experience. The JSON object section you requested will be duly included on top of the code making it simple and user-friendly for you to make modifications. We pride ourselves on delivering enterprise-grade solutions that incorporate well-defined scopes for scalability and performance optimization - two critical aspects your project demands. In line with this commitment, we will provide an inclusive read-me file along with the script deployment that clearly explains where to paste new rules while limiting their scope as per specific sites. With us on board, you can fully concentrate on rewriting or inserting snippets of text without any technical distractions. Let's connect so we can elevate this project together!
$30 USD in 7 days
7.1
7.1

Hi There!!! ★★★★ (Universal Tampermonkey userscript with configurable JSON rules, domain scoping, and multiple text matching methods.) ★★★★ I’ve read your project carefully and understand you need a reusable Tampermonkey script that works across different websites, with a simple configuration section for adding find, replace, and insert rules. The code should be clean, fully commented, and easy to extend without modifying the core logic. ⚜ Universal Tampermonkey userscript ⚜ Domain & URL pattern scoping ⚜ Keyword, CSS & RegEx matching ⚜ JSON-based rule configuration ⚜ Clean vanilla JavaScript code ⚜ Well-commented architecture ⚜ Readme with setup & usage guide I have strong experience with JavaScript automation, browser scripting, and DOM manipulation. I'll build a modular, lightweight script using only the Tampermonkey API, making it easy to maintain and customise. Everything will be clearly documented, so adding new rules will be quick and simple. I'd be happy to discuss your workflow and get started. Warm Regards, Farhin B.
$110 USD in 10 days
6.7
6.7

Hello dear! I’m Md Toriqul Islam, an experienced JavaScript developer with 10+ years of expertise in browser automation, userscripts, web customization, and maintainable software solutions. I understand you need a universal Tampermonkey userscript with configurable find/replace/insert rules, domain-based targeting, multiple matching methods, and a clean structure that allows future customization without modifying core logic. I have experience building flexible browser-side automation tools and custom scripts. My skills in JavaScript, Tampermonkey, DOM manipulation, regex processing, browser APIs, and clean code architecture make me confident in delivering a robust solution. I’m ready to start immediately and would be happy to discuss your requirements. Looking forward to hearing from you. Best regards, Md Toriqul Islam
$70 USD in 2 days
6.1
6.1

Hi, I’m Armin Nikdel. I can build this as a clean vanilla JavaScript Tampermonkey/Greasemonkey userscript with a top-level rules object for domain/URL scoping, find/replace/insert actions, and matching modes for keywords, CSS selectors, and regex. I’ll keep the core logic separate from the editable rule section, add comments around each part, and include a short README showing how to add a sample rule, limit it to a site, refresh the page, and confirm the text change. I’d also add safe defaults like no external dependencies, scoped matching, conservative DOM updates, and support for dynamically loaded page content. I can do it for USD 220 in around 10 days. For insert rules, do you want before/after/append positions supported for selector matches?
$220 USD in 10 days
6.0
6.0

Hi, you need a reusable browser-level text transformation tool that works consistently across different websites without rewriting the core logic every time you change targets. The tricky part here is keeping the script universal while still letting you safely scope rules per domain, selector, or pattern so it doesn’t start interfering with unrelated pages or breaking layouts unexpectedly. I can build you a clean Tampermonkey userscript in vanilla JavaScript with a clearly separated configuration block at the top where you define find/replace/insert rules, plus flexible matching modes using URL patterns, CSS selectors, and optional regex handling, all running through a single lightweight engine. You’ll get a fully commented script and a short guide showing exactly where to add new rules and how to limit execution per site so you can test changes instantly just by refreshing a page. Before I structure it, do you want the rules to run only once per page load or continuously watch for dynamic content changes like infinite scroll and SPA updates? Best regards, Fizza Nadeem K
$70 USD in 3 days
5.9
5.9

Hi there, Your Tampermonkey script needs a universal core with editable find/replace/insert rules, and that’s exactly how I’d structure it. I’ve spent the last 4 years solving this type of browser-side text automation, including userscripts that rewrote article headlines across multiple domains and a content tool that injected rule-based snippets into page templates. The real risk here is making the logic too site-specific or too brittle. I’ll keep the engine generic, then separate domain scoping, matching methods, and rule data so you can add new targets without touching the processing flow. I’ll also keep the comments tight and practical so the script stays maintainable after you start expanding it. I’ll build this in vanilla JavaScript using only the Tampermonkey/Greasemonkey API, with a top-level JSON-like config for rules, URL/domain filters, keyword and selector matching, plus an optional regex path. I’ll include a short read-me showing where to paste new rules, how to constrain them to specific sites, and how to test changes quickly after refresh. Best regards, John allen.
$155 USD in 6 days
6.0
6.0

Namaste, I’d love to help bring your project from concept to a production-ready solution. With strong experience in web applications, mobile apps, SaaS platforms, APIs, cloud deployment, AI/ML integrations, and scalable software architecture, I can deliver a reliable, maintainable, and user-friendly product tailored to your requirements. What I Can Deliver: . Clean and scalable architecture . Responsive web and mobile experiences . Secure APIs and database design . Third-party integrations and automation . Performance optimization and testing . Deployment, documentation, and support I focus on quality code, clear communication, and on-time delivery. I would be happy to discuss your requirements and propose the best approach for successful implementation. Best regards, Amit G. Kavya Tech Nepal
$240 USD in 7 days
6.2
6.2

As an experienced Web Engineer with over a decade of experience, I am well-versed in all the tools you need to bring your vision to life. My skills in CSS, JavaScript, and PHP are exactly what's necessary to develop your Tampermonkey Text Editor. Throughout my career, I have honed my ability to deliver clean, high-performing websites that are easy to understand and maintain - such as the lightweight yet powerful Universal Tampermonkey Text Editor you require. My methodical approach to code documentation will ensure not only that the code is fully understandable in with your needs but also easily extensible for future requirements. I believe my technical expertise and commitment to clear communication make me a perfect choice for this job. I will provide you with a script written in vanilla JavaScript relying exclusively on the Tampermonkey/Greasemonkey API as requested, while thoroughly commenting each section so that you can easily understand and insert rules. Additionally, I will include a concise read-me explaining where to paste new rules and how to selectively apply them, ensuring you can immediately see the changes upon page refresh. With me on board, your Universal Tampermonkey Text Editor will be primed for your specific needs and easy scalability for future modifications.
$30 USD in 1 day
6.1
6.1

Hello, I came across your Universal Tampermonkey Text Editor and I am very interested in working with you. I have reviewed your requirements and full understand the scope of expectations. I specialize in PHP, CSS, Web Development, and have successfully delivered similar projects before. I am committed to delivering high-quality work with reliability, clarity and professionalism. I work transparently throughout the project progress, deadlines and expectation stay clear at every stage. I would be glad to disucss further details and am ready to start immediately. Looking forward to hearing from you. Regards. Anum
$140 USD in 2 days
5.6
5.6

Hi there, I see you’re looking for a Tampermonkey userscript that allows you to easily modify text on any website. The goal is to create a flexible script where you can add your own rules for text changes without digging into the main code. I can definitely help with that! With 4+ years of experience in JavaScript and web development, I would structure the script to keep it lightweight and user-friendly. I'd implement a clear JSON section for your find/replace/insert instructions, along with methods for scoping those rules to specific domains. Each part of the code would be well-commented, so you’ll understand how everything works. One question I have is: do you have specific examples of the types of text changes you anticipate making, or should I keep it broad for now? Best regards, Arslan Shahid
$30 USD in 3 days
5.8
5.8

Manchester, United Kingdom
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