Hey Product Hunt! I built UtilsStack because I was tired of uploading sensitive files to random websites just to merge a PDF or convert an image. UtilsStack is 18 free browser-based tools — PDFs, images, QR codes, invoices, data conversion, and more. Everything runs in your browser using JavaScript. Your files never leave your device. No signup, no watermarks, no limits. The tools: - PDF split, merge, compress, rotate - HEIC/AVIF to JPG/PNG/WebP converter - Bulk image optimizer & compressor - Social media image resizer (all platforms) - QR code generator with custom logos & colors - JSON/CSV/YAML/XML/TSV converter - Invoice & receipt PDF generator - Privacy policy & terms generator - Email signature builder - Base64 encoder/decoder & JWT decoder - Color palette extractor from images - Markdown to PDF converter - Visual cron expression builder - Favicon generator (all sizes + manifest) - Lorem ipsum & fake data generator - WCAG color contrast checker - Meta tag & OG previewer - OG image generator I'd love your feedback — which tools do you use most? What's missing?

UtilsStack: Free, Privacy-First Tools

Free browser tools. No uploads. No signups. Just results.

Free browser tools. No uploads. No signups. Just results.