Sitemap

Unit Converter

Convert key measurement units in one screen.

Engineering Calculator

Evaluate scientific expressions with function support and local history.

LaTeX Graph Plotter

Parse LaTeX math expressions and plot 2D/3D graphs in browser.

IP Lookup

Inspect public IP-related metadata.

DNS Leak Test

Check if DNS requests leak outside expected routes.

WebRTC Leak Test

Detect local/public IP exposure through WebRTC.

SSL Checker

Validate certificate details and HTTPS setup.

WHOIS Lookup

Query domain registration ownership data.

Domain Availability Checker

Check domain availability for registration.

Meta Tag Checker

Inspect title, description, and Open Graph tags.

Sitemap Validator

Validate sitemap XML structure and URLs.

Robots.txt Tester

Test crawl rules against user-agent paths.

SERP Snippet Preview

Preview how your page can appear in search results.

PDF Merge

Combine multiple PDF files into one document.

PDF Compress

Reduce PDF file size for faster sharing.

PDF to DOCX

Convert PDF content into editable DOCX.

PDF to Images

Extract PDF pages as image files.

Images to PDF

Create a PDF from multiple images.

Image Compress

Compress image size directly in your browser.

Image Format Convert

Convert between PNG, JPEG, and WebP.

Image to Base64

Encode image files as Base64 and data URI strings.

Image Resize

Resize image dimensions with preview.

Image Annotate

Add notes and highlights to images.

QR Code Generator

Generate a QR code image from text or URL.

QR Code Decoder

Decode QR code content from an uploaded image.

Barcode Decoder

Decode common barcode formats from an image.

Barcode Generator

Generate printable barcode images in multiple formats.

JSON Formatter

Format, minify, and validate JSON instantly.

SQL Formatter

Make SQL queries readable and consistent.

Regex Tester

Test regular expressions with live matches.

Live Multi Mermaid Editor

Edit and preview multiple Mermaid charts on one screen. Unlike the official Mermaid editor, you can manage many charts in a single workspace.

Timestamp & Timezone Converter

Convert Unix timestamps, datetime inputs, and timezone-based times in one place.

Binary File Editor

Inspect and edit local binary files in a byte-level table.

IME Composition Inspector

Record and compare IME composition, beforeinput, input, and key event ordering across browsers.

LLM API Cost Calculator

Estimate monthly LLM API costs for chat, image, and video workloads.

Micro SaaS Profit Calculator

Calculate MRR, fees, net profit, and break-even point for your micro SaaS.

Cloudflare Workers Cost Calculator

Compare Workers, Pages, and R2 costs vs Vercel + Supabase and S3.