Free online tools that run in your browser
Images, PDF, QR codes, passwords and more. Free, in your browser.
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All tools- Generators11 toolsQR code generator · Password generator · UUID generator
- Images and codes16 toolsImage compressor and converter · Barcode generator · Colour palette and contrast checker
- Documents and text11 toolsPDF studio: merge, split, organise pages · Text toolkit · Text and file diff checker
- Developer22 toolsJSON formatter and validator · File hash checker · CSV and JSON converter
- Numbers15 toolsNumber to words · Percentage calculator · Loan calculator
- Everyday12 toolsAge calculator · Date calculator · BMI calculator
- Office5 toolsInvoice generator · Resume builder · Signature generator
- Audio and video6 toolsVoice recorder · Screen recorder · Audio trimmer
- Learning12 toolsFlashcards · Citation generator · Function grapher
- Web, SEO and marketing15 toolsOpen Graph and meta tag generator · robots.txt and sitemap generator · UTM link builder
Most used and just added
- QR code generatorStyled QR codes for links, Wi-Fi and contacts. Static, never expire.
- Image compressor and converterCompress, resize and convert images, compare before and after, strip hidden photo data.
- PDF studio: merge, split, organise pagesMerge, split, reorder, rotate and extract PDF pages, or turn images into a PDF.
- Resume builderWrite a CV, pick one of twenty templates and download a real-text PDF or Word file.
- Vietnam salary calculatorGross to net and net to gross for Vietnam, with 2026 tax brackets and insurance caps.
- Currency converterConvert 32 currencies, including VND, with today's rates and their update time.
- Lunar calendar converterSolar ⇄ lunar dates for Vietnam, with leap months, can chi and Tết for any year.
- Unit converterConvert 11 kinds of units with exact factors, from feet to metres to GiB.
- PDF to imagesRender PDF pages to PNG, JPG or WebP at the DPI you choose, then save them as a ZIP.
- Age calculatorExact age in years, months and days, next birthday and age in days or hours.
Latest from the blog
All articlesHow to make a bank transfer QR code for your shop (VietQR), and keep it safe
What a Vietnamese bank transfer QR code holds, static versus dynamic amounts, message limits, why you must test-scan it, and how to avoid fake QR stickers on a counter.
"Can Chi, nạp âm and mệnh table for 60 years (1984-2043)"
The full table of 60 lunar years with Can Chi, zodiac animal, nạp âm and mệnh, how to find the lunar year of a birth date, a mental shortcut for Can Chi, and why January births can belong to the previous year.
"Retirement age in Vietnam 2026-2035: the roadmap and how the birth month decides"
The Vietnamese retirement age from 2021 to 2035 by sex, why the month of birth changes the result, full tables by year of birth, and the early-retirement rule for heavy work.
What is Tangokit?
Tangokit is a free website with 125 online tools that run in your browser: image and PDF tools, QR codes, calculators and converters, developer utilities and more. It is an independent project by Đào Văn Thương in Vietnam, started in October 2026, and it is not related to Tango.ai or any other product called Tango.
More about Tangokit