Every online tool you need,
in one place.
Merge and convert PDFs, transform files, crunch numbers and speed up development — free, fast and private.
Browse by category
PDF Tools
Merge, split, compress, rotate and convert PDFs to and from Word, Excel and PowerPoint.
83 tools
File Converters
Convert images, documents, spreadsheets and data formats — JSON, CSV, YAML, Base64 and more.
9 tools
Calculators
Finance, health, date and everyday calculators that just work.
18 tools
Unit Converters
Instantly convert length, weight, temperature, area, speed, volume, data, time and currency.
10 tools
Developer Tools
Formatters, validators, encoders, hashes and generators for developers.
12 tools
Popular tools
Merge PDF
Combine multiple PDFs into one document.
Compress PDF
Shrink large PDF file sizes for easy sharing.
Images to PDF
Turn JPG / PNG images into a single PDF.
Fill PDF Forms
Fill in interactive PDF form fields and download.
OCR PDF
Extract text from scanned PDFs with offline OCR.
Split / Extract PDF
Pull specific pages out of a PDF.
Rotate PDF
Rotate all or selected pages of a PDF.
Rotate Single Page
Rotate only specific pages of a PDF.
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Recently added
Color Converter
Convert between HEX, RGB and HSL.
Text Reverser
Reverse letters, words or lines of text.
Slug Generator
Turn any text into a URL-friendly slug.
Case Converter
UPPER, lower, Title and Sentence case.
Timestamp Converter
Convert Unix timestamps to dates and back.
Lorem Ipsum Generator
Generate placeholder paragraphs of text.
Hash Generator
SHA-1, SHA-256 and SHA-512 hashes.
UUID Generator
Generate random v4 UUIDs in bulk.
Frequently asked questions
Is Kovi Tools free to use?
Yes. Every live tool is completely free with no signup, no watermarks and no daily limits.
Are my files safe?
Most tools run entirely in your browser so files never leave your device. Tools that need a server (like Office conversions) process files temporarily and never store them.
Do I need to install anything?
No. Kovi Tools works in any modern browser on desktop and mobile.
How many tools are there?
We have 132 production-ready tools across PDF, converters, calculators and developer categories — every one fully functional, with more added regularly.