Calculation
Converters, scientific math, and LaTeX graph plotting tools.
Most tools run fully in your browser. Items marked "Server required" need backend support.
Converters, scientific math, and LaTeX graph plotting tools.
Network diagnostics and lookup tools.
Inspect public IP-related metadata.
Check if DNS requests leak outside expected routes.
Detect local/public IP exposure through WebRTC.
Validate certificate details and HTTPS setup.
Query domain registration ownership data.
Check domain availability for registration.
Technical SEO checkers and search preview tools.
PDF and document conversion tools.
Compression, conversion, and visual editing for images.
Compress image size directly in your browser.
Convert between PNG, JPEG, and WebP.
Encode image files as Base64 and data URI strings.
Resize image dimensions with preview.
Add notes and highlights to images.
Generate a QR code image from text or URL.
Decode QR code content from an uploaded image.
Decode common barcode formats from an image.
Generate printable barcode images in multiple formats.
Formatting, validation, and text processing utilities.
Format, minify, and validate JSON instantly.
Make SQL queries readable and consistent.
Test regular expressions with live matches.
Edit and preview multiple Mermaid charts on one screen. Unlike the official Mermaid editor, you can manage many charts in a single workspace.
Convert Unix timestamps, datetime inputs, and timezone-based times in one place.
Inspect and edit local binary files in a byte-level table.
Record and compare IME composition, beforeinput, input, and key event ordering across browsers.
Estimate monthly LLM API costs for chat, image, and video workloads.
Calculate MRR, fees, net profit, and break-even point for your micro SaaS.
Compare Workers, Pages, and R2 costs vs Vercel + Supabase and S3.