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$
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I will create and debug custom regex patterns for data extraction and validation
Arsalan Sajjad
About this gig
Need powerful Regular Expressions to match, extract, or validate data?
I create precise, efficient regex patterns that automate data cleaning, validation, and extraction across multiple platforms and languages.
What I Can Do:
- Extract specific data: emails, dates, phone numbers, invoice IDs, custom formats, and more
- Validate form inputs: logins, emails, URLs, passwords, serial numbers, etc.
- Clean and parse text: log files, PDFs, CSVs, chat logs, or unstructured data
- Support web scraping and automation: custom patterns for Python scripts, Google Sheets, and bots
- Debug or improve existing patterns: optimize regexes for speed and accuracy
- Multilanguage integration: Python, JavaScript, Java, PHP, Google Sheets, and other environments
Common Use Cases:
- Email, phone number, and ID validation
- Log file or PDF data extraction
- Form input sanitization
- Website scraping and CSV parsing
- Chatbot and AI text parsing
Why Choose Me?
- Fast and accurate delivery clean, readable patterns tailored to your needs
- Cross-platform expertise, working knowledge of multiple languages and frameworks
- Production-ready code, I deliver tested regex snippets with usage notes
Get to know Arsalan Sajjad
Arsalan Sajjad
Website and Mobile App Developer, Prompt Engineer, MS Office Expert
- FromPakistan
- Member sinceJul 2019
Languages
English, Urdu
Welcome to my Fiverr profile! I'm Arsalan Sajjad, a tech freelancer with a passion for solving real world problems through smart digital solutions.
I specialize in creating custom AI prompts (ChatGPT, Midjourney), powerful RegEx patterns, and automation scripts. I extract and clean data from messy PDFs, build responsive websites, write SEO optimized blog posts, and format Word documents, reports, and theses.
Whether you're a business, student, or startup, I'm here to deliver clean, fast, and reliable results that work. Let’s make it happen!
Message me to get started!
My Portfolio
FAQ
What is REGEX (Regular Expressions)?
A regular expression is a sequence of characters that define a search pattern. It is usually used by algorithms for "find and replace" operations as well as string validation. Example: a regular expression can validate if your user's input is actually what you expect (e.g., a mail address)
In what programming languages are your REGEX's working?
This could be Python, Java, JavaScript, C#, PHP, Perl, Ruby, Go lang, or any other language with REGEX support. Regular Expressions work slightly differently in each of these languages. Please specify your programming language when ordering so I can build your REGEX to work in that environment.
Do I have to upload a testing text with my order?
No, but it is advisable to do so. With your testing material, I can better verify my work.
