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Popular tools

Popular ranking

Based on usage over the last 14 days.

1HTML to Markdown ConverterConvert blog, docs, and email HTML snippets into Markdown for GitHub, Notion, and README files.TOP 12SEO Meta Tag GeneratorGenerate title, description, Open Graph, Twitter, and JSON-LD tags for search and social sharing.TOP 23Loan Interest CalculatorEstimate monthly payment and total interest from amount, rate, and term.TOP 3

More popular tools

More tools climbing the chart.

4BMR CalculatorEstimate BMR, TDEE, maintenance, cutting, and bulking calories from age, height, weight, sex, and activity.Hot5Rent to Jeonse ConverterEstimate a Korea-specific jeonse-style deposit from monthly rent, deposit, and conversion rate.Hot6Link Preview CheckerInspect a URL's Open Graph, Twitter Card, title, description, and image to preview social sharing and missing tags.Hot7Base64 Encoder DecoderEncode plain text to Base64 or decode Base64 back to text.Hot8Sleep CalculatorCalculate bedtime or wake-up suggestions from 90-minute sleep cycles.Hot9Filename SanitizerClean invalid filename characters from one or many filenames.Hot10Combination Permutation CalculatorCalculate permutations, combinations, repetition cases, and factorial from n and r.Hot11JWT DecoderDecode JWT header and payload directly in your browser.Hot12Meeting Time PlannerFind practical meeting times across cities by comparing each participant's working hours.Hot13Aspect Ratio CalculatorCalculate matching width or height while preserving image and video aspect ratio, with 16:9, 9:16, 4:3, square, and ultrawide examples.Hot14Barcode GeneratorCreate Code 128 barcodes from product or inventory codes and download SVG or PNG.Hot15Email Signature GeneratorCreate a professional HTML email signature for Gmail, Outlook, Apple Mail, and more.Hot
Ranking Guide

Use the ranking as a starting point for fast tool discovery

Jabdogu ranking combines recent usage signals when available with editorial starting scores. It is not an absolute quality score; it is a discovery aid for tools visitors are likely to open and finish quickly.

Recent usage signal

Recent usage data is used first, while tools with limited data are filled in with a default editorial score.

Useful for first-time visitors

Top-ranked tools tend to be easy to start without sign-up and include examples that show the input and result flow quickly.

Check assumptions before relying on results

Tax, payroll, health, and finance tools are reference calculators. Verify official rules and source data for important decisions.