TOOLS2030 / GUIDES
Guides
Short, practical guides that explain how Tools2030 tools work and when to use them. Start with a guide, then try the matching free tool in your browser — no sign-up is needed.
PDF Guides
Learn how to combine, split and convert PDF files without losing the pages you need. These guides pair with the free PDF tools below.
- How to Merge PDF Files Online Safely and Quickly — try the Merge PDF tool.
- How to Split PDF Pages Online — try the Split PDF tool.
- How to Reduce PDF Size Online — try the Compress PDF tool.
- PDF to Word, PowerPoint or Excel: Which Converter Should You Use? — try PDF to Word, PDF to PowerPoint or PDF to Excel.
Image Guides
Choose the right image size and format for websites, social media and sharing, and keep quality high while files stay small.
- How to Compress Images Without Losing Too Much Quality — try the Image Compressor.
- How to Resize Images for Social Media and Websites — try the Image Resizer.
- How to Resize an Image for Instagram — try the Image Resizer tool.
- How to Resize an Image for WhatsApp — try the Image Resizer tool.
- JPG vs PNG vs WebP: Which Image Format Should You Use? — try PNG to JPG or JPG to PNG.
Calculator & Finance Guides
Understand the arithmetic behind everyday money questions, from instalments and interest to percentages, discounts and taxes. Results are estimates for planning, not financial advice.
- How EMI Is Calculated for Loans — try the EMI Calculator or Loan Calculator.
- Simple Interest vs Compound Interest: What Is the Difference? — try the Simple Interest Calculator or Compound Interest Calculator.
- Percentage, Discount, GST and VAT Calculations Explained — try the Percentage Calculator, Discount Calculator or GST/VAT Calculator.
Text Guides
Count words accurately and use QR codes and passwords more safely in everyday writing and sharing.
- How to Count Words, Characters and Reading Time — try the Word Counter.
- QR Codes and Strong Passwords: A Practical Security Guide — try the QR Code Generator or Password Generator.
Developer Guides
Make sense of data formats, encodings and identifiers used in everyday development work, with examples you can test in the matching tools.
- JSON, Base64 and URL Encoding Explained — try the JSON Formatter, Base64 Encoder/Decoder or URL Encoder/Decoder.
- UUIDs and Random Data: When to Use Each — try the UUID Generator or Random Number Generator.
Browse all guides in the Tools archive, or return to Tools2030 home to find a tool.