Discover 40+ free, fast, and privacy-friendly online developer tools: QR Code Generator, UPI QR, UUID Generator, Base64 & URL Encoders, Hash Calculator, JSON Viewer, Regex Tester, and PDF utilities. 100% client-side — no data sent to servers.
All tools run 100% in your browser — no uploads, no tracking, no paywalls. Use the same tools on utility.rajlabs.in, tools.rajlabs.in and utils.rajlabs.in. Categories include PDF (merge, split, compress to exact KB, protect, unlock, image to PDF), Photo (passport grid, image resizer to exact KB, signature resizer, background remover), Text (sanitize, formatter, lorem, markdown, diff), Calculators (EMI, GST, SIP/PPF, income tax old vs new, HRA, age, mortgage, BMI, salary take-home, scientific), QR & UPI (QR generator, UPI QR, WhatsApp QR, scanner, MCC explorer), JSON & Dev (viewer, diff, csv/xml/yaml, regex, uuid, jwt, hash, url lab, code formatter) and more. Each tool has a shareable URL (?param=value), copy buttons and offline support.
Try PDF Editor & Signer, Image Resizer to Exact KB for SSC/UPSC/IBPS forms, Passport Photo Grid, QR Code Generator, UPI Inspector, JSON Viewer, EMI & SIP Calculators, Percentage & Unit Converters, and PII Masker. Browse categories on the homepage — every tool is one tap away.
All pages have unique titles and descriptions, a single H1, and 300+ words of static fallback so Bing and other crawlers see complete content even without JavaScript. Submit updates via IndexNow and sitemaps at /sitemap.xml, /sitemap-tools.xml and /sitemap-utils.xml.
Open Rajlabs Tools — bookmark your favourite and add it to your home screen as an app.
Static fallback for crawlers without JavaScript — the interactive app loads when JavaScript is enabled.