The top 20 most-used free online tools. Join millions of users who trust ToolBox for their daily tasks.
Popularity estimates are based on usage analytics and public interest trends.
Reduce PDF file size without losing quality. Free online PDF compressor with smart optimization.
Combine multiple PDF files into one document online. Free, fast, and secure PDF merger.
Add your signature to PDF documents online. Type, draw, or upload your signature. Free, secure, and instant.
Convert PDF to editable Word documents online. Free, accurate PDF to DOCX converter.
Compress JPG, PNG, and WEBP images without losing quality. Free online image compressor.
Create professional invoices in seconds. Free online invoice generator with GST support and PDF export.
Convert Word documents to PDF online. Free, fast DOCX to PDF converter with perfect formatting.
Calculate EMI for home loans, car loans, and personal loans. Free online EMI calculator with amortization schedule.
Calculate your exact age from date of birth in years, months, weeks, days, hours, and minutes.
Convert PDF pages to high-quality JPG images. Free online PDF to image converter.
Calculate monthly in-hand salary, tax deductions, PF, and HRA from CTC. Understand your take-home pay instantly.
Count words, characters, sentences, and paragraphs in real-time. Free online word counter for essays, articles, and social media.
Design professional business cards online. Free business card generator with templates and print-ready export.
Calculate compound interest growth, maturity amount, and total returns. Compare yearly, half-yearly, quarterly, and monthly compounding.
Resize images to exact dimensions. Free online image resizer with aspect ratio lock and multiple formats.
Calculate GST amount, net price, and gross price for any Indian GST slab. Supports 5%, 12%, 18%, and 28% rates.
Protect PDFs with passwords or remove existing password protection. Free online PDF security tool.
Convert between major currencies using live exchange rates. USD to INR, EUR to USD, GBP to INR, and more.
Build a professional resume in minutes. Free online resume builder with ATS-friendly templates and PDF export.
Estimate your home loan, personal loan, or car loan eligibility based on monthly income and existing EMIs.