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6.9
6.9
98%
Karachi, Pakistan
$25 USD per hour
I'm an experienced software developer with experience in building web scrapers, crawlers, and webbots of varying complexity in PHP and Python. I also have experience in modern web technologies, including HTML5, CSS3, and JavaScript on the Front-End as well as PHP and Node.js on the Back-End. I also do the following: - Develop command-line tools and utilities in PHP, Python, Go, and JavaScript - Develop Greasemonkey and Tampermonkey scripts - Develop websites in core PHP, CodeIgniter framework, and Drupal - Develop and integrate SOAP and RESTful APIs in PHP and Node.js - Convert regular HTML pages to AMP (Accelerated Mobile Pages) - Write Google Apps Scripts for Google Workspace apps, including Google Sheets - Build add-ons for Google Workspace apps - Develop webbots to automate repetitive website operations I am a hard-working, reliable person. You can depend on me for your project needs.
4.6
4.6
100%
Mandsaur, India
$20 USD per hour
I am individual programmer , love to serve the technology solutions to people across the globe. I am expert in creating different type of custom software, and writing automation procedures. I do websites, mobile apps, IoT based solutions, data processing and mining. I work on Flutter, Android, PHP , Python, Wordpress, Selenium, MySql, Javascript, Autoit, Raspberry pi, Moodle ✅ Certificated Skills • Android • Flutter • PHP • Selenium • Wordpress • Python • MySQL • JavaScript • HTML5 / CSS3 ✅ Why should you hire me? • High Quality • Fast Response (24 hours / 7 days availability) • Good Communication
7.5
7.5
92%
VARANASI, India
$25 USD per hour
verified by Fl staff ******* My Goal: High Quality, High Speed, High Satisfaction! ******* * Good communication availability 24/7 I am a senior designer & developer with extensive experience in building high-quality website design & development. We have developed a wide range of websites and web portals using HTML, CSS, Javascript, Ajax, Jquery, PHP, MySQL, and MSSQL. I also work in the following CMS Framework: WordPress, VirtueMart, Magento, Shopify, Joomla, etc. My Experience? Web Designer & Developer with world top class quality work WordPress Expert 7+ Years of Experience and Superb Skills. Available online on chat 24x7 for any queries & Work 7 days a week. 100% Job Satisfaction Highly appreciated and Recommendations - Mostly 5-star Rating Recommendations from happy clients! - High-Quality Output - GUARANTEED HIGH-QUALITY RESULTS I am an individual and not a company Contact me and discover how I could help you. Let's chat soon! :)
7.2
7.2
91%
Lviv, Ukraine
$30 USD per hour
Specializing in scraping/data mining projects, various backend tasks, general scripiting. 10+ years in freelance. My skills include: Perl, Python, PHP SQL/NoSQL databases Linux administration
8.7
8.7
98%
Skopje, Macedonia
$50 USD per hour
14 years of experience with Magento 1 & Magento 2 on daily basis. Over the years I’ve completed over 1000+ Magento projects for various clients covering all Magento aspects. I am a Full Stack Developer, with fifteen years of proven web development experience, focused on Magento e-commerce.
5.5
5.5
97%
Rohtak, India
$55 USD per hour
I develop addons for Mozilla Firefox, Google Chrome, Internet Explorer, Opera, Safari and Mozilla Thunderbird. Besides web browser addons I also develop mobile phone apps for Android and Windows Phone 7+. Some other expertise are C#, ASP.Net, Wordpress, SEO etc. I'm a working in a Startup and do freelancing as a part time. I'm computer engineering student and I qualified GATE exam in 2011 and I did B.Tech in computer engineering from Maharshi Dayanand University campus. During my graduation days I developed a custom CMS in ASP.Net for my college campus website as my graduation project.
3.5
3.5
100%
Albuquerque, United States
$30 USD per hour
Web scraping, data extraction/manipulation, data (re)formatting, regex-based tasks. I like task-based work for fixed prices where I deliver the actual results (e.g. a csv file of the requested data), not code for the client to run. (This allows the the work get done faster, cheaper, and more reliably.)
4.1
4.1
100%
Delhi, India
$8 USD per hour
I am a full-time, dedicated & devoted Data mining professional with over 7+ years of experience in the field. At present, I live in India, I have completed over 500 projects for worldwide clients from various industries such as Retail, Finance, Travel, Real Estate, Insurance, etc. I have done projects related to several e-commerce giants, such as Justdial, Amazon, and Flipkart. Scraped information can be delivered in any required format - which includes Google Sheets, CSV, JSON, Excel XLSX, XML, MySQL, TXT, and More. My Services: • Website Scraping • Email Collection • Website to Excel, PDF to Excel Conversion, JPG to Excel • Data Entry • Internet Research • Database Building • Contact & Mailing List Building • Data Extraction/Mining • Data Scraping, Cleansing, Matching, Removing Duplicates Please feel free to contact me for any kind of information, and sample data. I always try to reply ASAP. Thank you, for visiting my profile.
3.7
3.7
100%
Iztapalapa, Mexico
$30 USD per hour
Hola, soy Fabián Arturo Cañaveral Pimentel Trabajo en los siguientes framework PHP: Laravel: Symphony Codeigniter Nodejs: Typescript Next.js Express Socket.io Python: Flask Framework Django Frontend: React, React native Angular 6+ Ionic 2+ Configuraciones en AWS, Azure y despliegue automático con Github CI/CD https://www.linkedin.com/in/fabian-canaveral/
A Grease Monkey developer is a JavaScript programmer who builds userscripts for the Greasemonkey browser extension, customizing how websites look and behave directly in the user's browser. These freelancers write lightweight scripts that modify page content, automate repetitive web tasks, inject new features into existing sites, and enhance the browsing experience without requiring server-side changes. Hiring a skilled Grease Monkey developer is the fastest route to client-side web automation when you need a tailored fix that works inside Firefox, Chrome, or other supported browsers.
Userscripts solve problems that no website owner is going to solve for you. A Grease Monkey developer writes the JavaScript that makes a site behave the way you want it to behave, whether that means stripping clutter, scraping data, automating clicks, or adding entirely new interface elements.
Typical deliverables include:
A capable userscript developer is fluent in modern JavaScript and the specific APIs that the Greasemonkey ecosystem provides. Expect strong working knowledge of:
Strong developers also understand same-origin policy, CORS, content security policies, and how shadow DOM affects script targeting on modern web apps.
Userscript work spans nearly every industry that depends on the web. Common projects include:
Adjacent skills you may want bundled into the same hire include browser extension development, Puppeteer or Playwright automation, web scraping with Python or Node.js, and front-end development with HTML and CSS.
The best userscript developers leave a public trail. Look for published scripts on Greasy Fork or GitHub, install counts, version history, and responsive issue handling. A clean metadata block, sensible @match patterns, and proper use of @grant signal a developer who understands the runtime, not just the language.
Look for these qualifications and signals:
Sample interview questions you can copy and use:
Freelancer.com gives you access to a global pool of JavaScript and userscript specialists, from solo automation hackers to senior front-end engineers who treat userscripts as a side specialty. You post the brief, freelancers compete on approach and timeline, and you choose the developer whose proposal best matches your problem.
Clients on Freelancer.com set their own budgets and receive competitive bids, so pricing reflects the real scope of your script rather than a fixed rate card. Profile ratings, written client reviews, and verified payment status make it straightforward to compare freelancers on Freelancer.com before you commit. Milestone Payments hold your funds securely and release them only when each stage of the work is approved.
Ready to get your custom userscript built?
Hiring a userscript developer follows a simple three-step process on Freelancer.com. The clearer your brief, the better the bids, because userscripts are highly site-specific and developers need to know exactly what page and what behavior you are targeting. Here is how to move from idea to awarded project.
Your project post is the single biggest determinant of bid quality. A clear brief filters for developers who understand userscript runtimes, browser compatibility, and the specific behavior you want changed. Head to the
Bids are short proposals, not just price quotes. They reveal how each developer interprets your brief, whether they have looked at the target site, and what approach they would take. Read carefully and shortlist freelancers whose understanding of the work matches what you actually need.
Your final decision combines proposal quality with profile evidence. Look at the consistency of past userscript work, not just the most impressive single example, since userscript skill is about reliable client-side scripting across many sites and edge cases.
A small DOM tweak or single-page automation can often be delivered in a day or two. Larger scripts that handle multi-step automation, data scraping with pagination, or complex UI overlays usually take a week or more, depending on how dynamic the target site is and how much testing is required.
A userscript is a single JavaScript file that runs inside the Greasemonkey, Tampermonkey, or Violentmonkey extension and modifies specific web pages. A full browser extension is a packaged application with its own manifest, background workers, and distribution through browser stores. Userscripts are faster to build, easier to update, and ideal when the goal is to modify existing websites rather than build standalone tools.
Yes. Most userscript work on Freelancer.com is project-based, and many freelancers specialize in short turnarounds for single scripts. You can also retain the same developer for ongoing maintenance if the target website changes its markup and breaks the script.
Not always. Userscripts depend on the structure of the page they target, so significant redesigns can break selectors and require updates. A good developer writes resilient selectors and documents the script so future maintenance is straightforward, and many freelancers offer a maintenance arrangement for sites that change frequently.
If the work happens inside your browser as you use the site, a userscript developer is the right fit. If you need to run automated extraction at scale on a server, headless tools like Puppeteer or Playwright handled by a web scraping specialist are usually a better match. Some freelancers cover both.
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