Server Time
Check server time for ticketing and booking sites, then count down to a target time with fallback guidance.
TimeFree online tools
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Calculators, converters, text utilities, PDF helpers, and developer tools that open fast and work in your browser.
Categories
ListPopular tools
ListCharacter Counter
Count characters, bytes, words, and lines instantly.
TextKorean Income Tax Calculator
Estimate Korean income tax and local income tax in KRW for salary, business, and freelance income.
MoneyPDF Editor
Preview, extract, split ranges, delete pages, add page numbers, add watermarks, rotate, merge, and export PDFs from one workspace.
FilesCompound Interest Calculator
Estimate long-term future value and earnings from starting amount, contributions, rate, and compounding frequency.
MoneyExchange Rate Calculator
Convert KRW and travel currencies with latest reference rates, manual rates, and exchange or card fees.
LifeHWP/HWPX Document Viewer
Open HWP/HWPX Hangul documents, preview pages, or download them as a PDF.
FilesKorean Salary Calculator
Estimate Korean KRW monthly take-home pay, social insurance, and tax deductions from annual salary.
MoneyGPA Calculator
Calculate overall GPA, major GPA, earned credits, pass/fail handling, and target GPA from courses.
LifeKorean Weekly Holiday Pay Calculator
Estimate Korean weekly holiday pay from hourly wage and scheduled weekly hours.
MoneySmartStore Margin Calculator
Estimate seller profit, break-even price, and target-margin sale price from costs, shipping, fees, and ads.
MoneyHEIC to JPG Converter
Convert iPhone HEIC/HEIF photos into JPG or PNG locally in your browser and download a ZIP.
FilesLoan Interest Calculator
Estimate monthly payment and total interest from amount, rate, and term.
MoneyImage Cropper
Upload an image, choose an aspect ratio, adjust zoom and position, then crop locally in your browser.
FilesSVG to PNG Converter
Render SVG files or pasted SVG code into PNG or JPG images locally in your browser.
FilesNew tools
ListHEIC to JPG Converter
Convert iPhone HEIC/HEIF photos into JPG or PNG locally in your browser and download a ZIP.
FilesSVG to PNG Converter
Render SVG files or pasted SVG code into PNG or JPG images locally in your browser.
FilesPDF Editor
Preview, extract, split ranges, delete pages, add page numbers, add watermarks, rotate, merge, and export PDFs from one workspace.
FilesHTML to Markdown Converter
Convert blog, docs, and email HTML snippets into Markdown for GitHub, Notion, and README files.
TextImage Cropper
Upload an image, choose an aspect ratio, adjust zoom and position, then crop locally in your browser.
FilesInvoice Generator
Create a professional PDF invoice from business, client, line item, tax, and discount details in your browser.
MoneySignature Generator
Draw or type a signature and download a transparent PNG for documents, PDFs, and forms.
FilesEmail Signature Generator
Create a professional HTML email signature for Gmail, Outlook, Apple Mail, and more.
TextText Diff Checker
Compare two texts or text files online with a GitHub-style side-by-side diff, word highlights, whitespace/case options, and patch download.
TextJSON to TypeScript Generator
Convert JSON samples into TypeScript interfaces and types.
DeveloperSitemap.xml Generator
Generate sitemap.xml content from a list of URLs for search engine submission.
DeveloperRobots.txt Generator
Generate robots.txt rules with crawler allow, disallow, crawl-delay, and sitemap entries.
DeveloperHow Jabdogu Works
Open a tool, check the result, and leave without a heavy account flow.
Jabdogu organizes calculators, converters, file utilities, and developer helpers around short tasks. Examples show the input flow quickly, browser-side processing is preferred when practical, and shared links avoid storing sensitive custom inputs by default.
Examples before real input
Each tool aims to show sample input and result behavior first, so visitors can understand the workflow before entering their own values.
Browser-first when possible
Text transforms, unit calculations, and lightweight previews are designed to run in the browser whenever a server is not required.
Ads outside core actions
Monetization should not cover primary actions such as entering data, checking results, copying output, or downloading a generated file.