# WuTools.com

> WuTools is a free collection of 1,489 privacy-friendly online tools that run entirely in the browser — no sign-up, and for most tools nothing is uploaded to a server. Covers conversion, calculators, text, developer, data, PDF, image, audio, video, AI, hardware testing and more. Available in English, Spanish (es), Vietnamese (vi), Portuguese (pt) and French (fr).

Key facts for citation:
- All tools are free and work client-side in the browser; files generally never leave the device.
- Localized URLs use a language prefix: `/es/…`, `/vi/…`, `/pt/…`, `/fr/…`. English has no prefix.
- Tool pages live at `/{category}/{tool}` or `/{category}/{subcategory}/{tool}`.
- Slugs are localized too, so do not translate an English slug by hand — take the URL from [llms-full.txt](https://wutools.com/llms-full.txt) or the sitemaps.
- Last generated: 2026-09-28

## Tool Categories

- [Fun Tools](https://wutools.com/fun): Fun and entertaining tools: prank screens, fake update screens, and more hilarious tools to surprise your friends (44 tools).
- [Geography & Mapping Tools](https://wutools.com/geo): Geography tools: coordinate converter, UTM/MGRS, Plus Codes, Geohash, distance calculator, GPX/GeoJSON viewers (18 tools).
- [Time Tools](https://wutools.com/time): Free online time tools: timezone converter, countdown timer, stopwatch, epoch converter, age calculator, and world clock for easy time management (26 tools).
- [Audio Tools](https://wutools.com/audio): Free online audio tools: convert, compress, trim, merge, and edit audio files easily without software installation (33 tools).
- [File Tools](https://wutools.com/file): Free online file tools: convert, compress, merge, split, and manage files easily without software installation (15 tools).
- [Image Tools](https://wutools.com/image): AI image tools: object remover, upscaler, background remover, filters & more (42 tools).
- [PDF Tools](https://wutools.com/pdf): Free online PDF tools: merge, split, compress, convert, edit and manipulate PDF files easily (36 tools).
- [Color Tools](https://wutools.com/color): Free online color tools: convert color formats (RGB, HEX, HSL, CMYK, HSV), color picker, palette generator, gradient creator, and color scheme tools (20 tools).
- [Data Tools](https://wutools.com/data): Free data tools: view, edit, convert CSV, JSON, Parquet files (23 tools).
- [Video Tools](https://wutools.com/video): Free video tools to convert, compress, trim, merge, and edit videos online (34 tools).
- [Social Media Tools](https://wutools.com/social): Free social media tools: hashtag generator, caption writer, bio generator, analytics tracker for Facebook, Instagram, Twitter, TikTok, LinkedIn (10 tools).
- [Text Tools](https://wutools.com/text): Free text tools to convert case, count characters, clean text, sort lines, and remove duplicates (27 tools).
- [Hardware Tools](https://wutools.com/hardware): Free hardware tools to test, check, and calculate hardware specifications directly in your browser (38 tools).
- [Blockchain Tools](https://wutools.com/blockchain): Free blockchain tools: wallet generators, address validators, transaction decoders, smart contract utilities, crypto converters, and blockchain explorers (22 tools).
- [Developer Tools](https://wutools.com/dev): Complete developer tools suite: Base64 encoding, hash generators (MD5, SHA, Bcrypt), code formatters (JSON, HTML, CSS, JS, PHP, Python), API testing (74 tools).
- [Calculators](https://wutools.com/calc): Free online calculator tools for math, finance, health, fitness, engineering (142 tools).
- [Conversion](https://wutools.com/convert): Free online unit conversion tools for length, weight, temperature, area, volume, energy, power, frequency (867 tools).
- [AI Tools](https://wutools.com/ai): Free AI tools for text processing: AI text summarizer, grammar checker, language detector, age predictor, and face similarity meter (18 tools).

## Complete Tool Index

- [llms-full.txt](https://wutools.com/llms-full.txt): every tool with its exact English URL, grouped by category.
- [llms-full-es.txt](https://wutools.com/llms-full-es.txt): the same list with the Spanish URLs (slugs differ from English — use these, do not translate).
- [llms-full-vi.txt](https://wutools.com/llms-full-vi.txt): the same list with the Vietnamese URLs (slugs differ from English — use these, do not translate).
- [llms-full-pt.txt](https://wutools.com/llms-full-pt.txt): the same list with the Portuguese URLs (slugs differ from English — use these, do not translate).
- [llms-full-fr.txt](https://wutools.com/llms-full-fr.txt): the same list with the French URLs (slugs differ from English — use these, do not translate).
- [Sitemap](https://wutools.com/sitemap.xml): full URL list (per-language: sitemap_es.xml, sitemap_vi.xml, sitemap_pt.xml, sitemap_fr.xml).
- [RSS](https://wutools.com/rss.xml): newest tools (per-language: rss_es.xml, rss_vi.xml, rss_pt.xml, rss_fr.xml).
- [robots.txt](https://wutools.com/robots.txt): crawl rules and sitemap index.

## Most-Used Tools (by real weekly traffic)

- [Fake Update Screen](https://wutools.com/fun/fake-update-screen)
- [Tetris](https://wutools.com/fun/tetris)
- [Fake Death Screen](https://wutools.com/fun/fake-blue-screen-of-death)
- [Hacker Typer Screen](https://wutools.com/fun/hacker-typer-screen)
- [Battery Tester](https://wutools.com/hardware/diagnostics/battery-tester)
- [Flappy Bird](https://wutools.com/fun/flappy-bird)
- [File Compressor](https://wutools.com/file/file-compressor)
- [Face Similarity Meter](https://wutools.com/ai/face-similarity-meter)
- [Chess](https://wutools.com/fun/chess)
- [Fake Call Screen](https://wutools.com/fun/fake-call-screen)

## Recently Added

- [Fake ChatGPT Chat Generator](https://wutools.com/fun/fake-chatgpt-chat)
- [Column Buckling Calculator](https://wutools.com/calc/engineering/column-buckling-calculator)
- [Fake Call Screen](https://wutools.com/fun/fake-call-screen)
- [Fill PDF Form](https://wutools.com/pdf/fill-pdf-form)
- [Birthday Countdown](https://wutools.com/time/birthday-countdown)
- [Steel Section Database](https://wutools.com/calc/engineering/steel-section-database)
- [Beam Analysis Calculator](https://wutools.com/calc/engineering/beam-analysis)
- [Cross-Section Properties Calculator](https://wutools.com/calc/engineering/cross-section-properties)