About KaruviLab
Privacy-first browser tools for everyday document work.
What is KaruviLab?
KaruviLab is a free, browser-based utility designed to help individuals prepare images and PDF documents that meet the strict requirements of government portals, online application systems, and official document submissions.
From passport photos and signatures to ID proofs and thumb impressions — every government document upload has its own format, size, and dimension requirements. Our tool takes the guesswork out of the process by letting you compress, convert, create, and validate files directly in your browser, without uploading anything to a server.
Why We Built This
Millions of people struggle every year when uploading documents to government portals. Common errors include file size limits, wrong dimensions, or unsupported formats. We built this tool to be the one-stop solution for all these problems — fast, free, and private.
Key Features
Compressor
Reduce image size to under 100 KB or PDFs to under 1 MB.
Converter
Convert between JPG, PNG, GIF, WebP, AVIF, TIFF, BMP, HEIC, and PDF.
Image Creator
Create passport photos, signatures, and custom-sized images.
PDF Tools
Merge PDFs, convert images to PDF, and compress PDF files.
Validator
Validate files against government portal rules and auto-fix issues.
Developer Tools
Base64, Regex, JSON/XML formatter, and Markdown editor.
Split & Copy
Break large text into parts for easy mobile clipboard sharing.
100% Private
All processing happens locally. No file is ever uploaded to any server.
About the Owner
R Gowtham
Owner & Administrator
R Gowtham is the creator and maintainer of KaruviLab under the Wanderseven brand. Passionate about building practical, privacy-first tools for everyday users.
Technology
This tool is built with Next.js and TypeScript, using Tailwind CSS for styling. It leverages open-source libraries like pdf-lib, PDF.js, and Canvas APIs for advanced format support. No server-side processing. No tracking. No cookies.