You will get I will build a custom HTML tool or script for your business
Project details
I build lightweight, self-contained HTML/JavaScript tools that run entirely in the browser — no server, no subscriptions, no monthly fees.
What sets my tools apart is simplicity and reliability: everything works offline in a single file, your data never leaves your computer, and there's nothing to install or configure. I've built a range of these tools already, including QR code generators, invoice and receipt generators, password generators, and barcode tools, so I understand what makes a small utility genuinely useful rather than overcomplicated.
I focus on clean, functional design and cross-browser compatibility, so your tool works the same way whether you or your clients use Chrome, Safari, Firefox, or Edge. Whether you need a brand new tool built from scratch or a custom version of an existing concept, I'll make sure it fits your exact workflow and branding.
What sets my tools apart is simplicity and reliability: everything works offline in a single file, your data never leaves your computer, and there's nothing to install or configure. I've built a range of these tools already, including QR code generators, invoice and receipt generators, password generators, and barcode tools, so I understand what makes a small utility genuinely useful rather than overcomplicated.
I focus on clean, functional design and cross-browser compatibility, so your tool works the same way whether you or your clients use Chrome, Safari, Firefox, or Edge. Whether you need a brand new tool built from scratch or a custom version of an existing concept, I'll make sure it fits your exact workflow and branding.
Programming Languages
HTML & CSS, JavaScript, TypeScriptCoding Expertise
Cross Browser & Device Compatibility, Performance Optimization, SecurityWhat's included
| Service Tiers |
Starter
$25
|
Standard
$50
|
Advanced
$90
|
|---|---|---|---|
| Delivery Time | 2 days | 3 days | 5 days |
Number of Revisions | 1 | 2 | 3 |
Number of Pages | 1 | 1 | 2 |
Design Customization | - | ||
Content Upload | - | ||
Responsive Design | - | ||
Source Code |
Optional add-ons
You can add these on the next page.
Fast Delivery
+$15 - $30
Additional Revision
+$10
Additional Page
(+ 1 Day)
+$20
Design Customization
(+ 1 Day)
+$15
Content Upload
(+ 1 Day)
+$10
Responsive Design
(+ 1 Day)
+$15Frequently asked questions
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AT
Andriana T.
Oct 22, 2025
Excel Cost Tracking System Development
very nice work!
About Rostyslav
Microsoft Excel, google sheets
Lviv, Ukraine - 9:21 pm local time
Key Competencies:
• Development and automation of Excel projects: creating efficient tools for data processing, analysis, and visualization
• Building custom dashboards using conditional formatting, pivot tables, formulas, and Power Query
• Workflow optimization through the integration of VBA macros and scripts to minimize repetitive tasks
• Designing structured reporting templates with flexible filtering and periodization options
• Data visualization: crafting charts, diagrams, and infographics to simplify the perception of key indicators
📊 Experience with Big Data:
• Processing large datasets (100K+ rows) using Power Query, Power Pivot, and external sources (CSV, SQL, API)
• Building reports with dynamic updates and connections between multiple data sources
• Leveraging tools for trend analysis, anomaly detection, and data classification
🛠 Sample Projects:
• Automated financial performance monitoring system for small businesses
• Excel-based content planning tool with auto-formatting and dynamic filtering
• Visual tracker for TikTok/Telegram metrics integrating analytics and PDF report generation
Steps for completing your project
After purchasing the project, send requirements so Rostyslav can start the project.
Delivery time starts when Rostyslav receives requirements from you.
Rostyslav works on your project following the steps below.
Revisions may occur after the delivery date.
Requirements review
I'll review your answers and any files to fully understand what the tool needs to do
Build the tool
I'll code the HTML/JS logic and design based on your requirements