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86+ 个工具 · 完全在浏览器中运行

免费在线工具，
为速度而生。

为开发者、写作者和日常工作打造的一系列快速、简洁、无干扰的实用工具。无需注册、无广告，数据不会离开你的浏览器。

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工具: 86+
分类: 10
费用: 免费

Tool of the dayText

Emoji Remover

Remove emojis from text while keeping letters, numbers, punctuation, and readable spacing.

Try it nowNew tool tomorrow

按用途浏览

日常在线工具

常用格式化、转换与清理任务的快速入口。

开发者工具

JSON、正则、时间戳、编码与 API 实用工具。

文本与写作工具

字数统计、大小写转换、生成 slug 和文本提取。

按分类浏览

每个分类都聚焦于一类具体的日常任务。

查看全部工具

Developer

此分类下有 19 个工具

developer 中还有 +15 个

Math

此分类下有 3 个工具

Text

此分类下有 25 个工具

text 中还有 +21 个

Design

此分类下有 2 个工具

Encoding

此分类下有 11 个工具

encoding 中还有 +7 个

Security

此分类下有 10 个工具

security 中还有 +6 个

Marketing

此分类下有 3 个工具

Data

此分类下有 6 个工具

data 中还有 +2 个

Finance

此分类下有 4 个工具

Cloud

此分类下有 3 个工具

全部工具

选择一个工具立即开始——结果即时呈现。

共 86 个

Timestamp Converter

Convert Unix timestamps to human-readable dates and back, in seconds or milliseconds. Live epoch clock, ISO 8601, UTC, and any timezone — free and fully in-browser.

Time Zone Converter

Compare up to 4 time zones side-by-side with a live 24-hour grid. Search by city, country, IANA, or abbreviation (GMT, NPT, IST, EST). Star favorites, pick a meeting time that works everywhere.

Nepali Date Converter (BS ↔ AD)

Convert dates between Nepali Bikram Sambat (BS) and English Gregorian (AD) instantly — with Nepali month names, Nepali digits, a live BS calendar, and today highlighted for Nepalis at home and abroad.

Nepali Font Converter (Preeti ↔ Unicode, Roman → Nepali)

Convert Preeti to Unicode, Unicode to Preeti, and type Romanized English phonetically into Nepali Unicode — instantly, privately in your browser. Built for writers, editors, government staff, and anyone migrating old Preeti documents to modern Unicode.

Number Base Converter

Convert binary, decimal, octal, and hexadecimal values with grouped formatting and optional bit-length padding.

Color Converter

Convert HEX, RGB, and HSL color formats instantly with a visual picker, palette suggestions, and copyable outputs.

Color Picker

Interactive color picker with eyedropper support, image upload and URL sampling, saturation/brightness canvas, hue and opacity sliders, HEX / RGB / RGBA / HSL / CMYK output, CSS named-color lookup, nearest-name matching, and saved swatches.

Unit Converter

Convert units across length, mass, temperature, speed, area, and volume with category switching and recent history.

CGPA to Percentage Converter

Convert CGPA to percentage and percentage to CGPA on 10-point (CBSE / Indian universities) and 4-point (US GPA) scales — designed for Indian and Nepali students.

JSON Formatter

Format and beautify JSON with proper indentation.

Base64 Encode

Encode plain text into Base64.

Base64 Decode

Decode Base64 back to readable text.

Base64 to Image

Decode Base64 image input and preview or download the result instantly.

Image to Base64

Convert uploaded images to a Base64 Data URL string in your browser.

Word Counter

Count words, characters, and lines in text.

Emoji Remover

Remove emojis from text while keeping letters, numbers, punctuation, and readable spacing.

Email Validator

Instantly check if an email address is valid with normalized output and clear error messages.

Email Extractor

Extract unique email addresses from text, logs, and messy documents in one click.

IDN Punycode Converter

Convert Unicode domains to punycode and decode punycode back to internationalized domain names.

URL Encode

Percent-encode text so it can be safely used inside a URL.

URL Decode

Decode a percent-encoded URL string back to readable text.

Slug Generator

Turn any string into a clean, URL-safe slug.

Case Converter

Convert text between lower, UPPER, Title, camelCase, snake_case, and more.

Password Generator

Free strong password generator and passphrase generator. Create 8, 12, 15, 16, 20, or 32 character random passwords, or memorable 3–7 word passphrases, with a live strength meter, entropy in bits, and crack-time estimate. Everything runs locally in your browser.

htpasswd Generator

Generate .htpasswd credentials for Apache and Nginx Basic Auth. Create APR1-MD5 or SHA-1 entries, build multi-user files, and follow practical setup steps to protect folders with .htaccess or server config.

UUID Generator

Generate random v4 UUIDs instantly — single or bulk.

Random Number Generator

Generate random numbers with custom min/max range, decimal precision, and batch output for analytics, testing, and simulations.

Random String Generator

Create random strings with configurable character sets, optional prefix/suffix, and exclusion of ambiguous characters for safe IDs.

Lorem Ipsum Generator

Generate placeholder text in words, sentences, or paragraphs.

Hash Generator

Compute MD5, SHA-1, or SHA-256 hashes of any text.

JWT Decoder

Decode and inspect JSON Web Tokens without verification.

JWT Encoder

Create JWT tokens with custom header and payload JSON, optional HMAC signing, and expiration controls for secure API testing.

Hash Compare Tool

Compare two hashes with exact matching, timing-safe comparison, and similarity detection to catch subtle differences quickly.

HMAC Generator

Generate HMAC signatures using SHA-256, SHA-384, or SHA-512 with an API testing mode for method, path, timestamp, and body signing.

HTML Entity Encode

Encode special characters into HTML entities.

HTML Entity Decode

Decode HTML entities back to readable characters.

Binary Converter

Convert plain text to binary and decode binary bytes back to text.

Regex Tester

Test regular expressions against text with live match highlighting.

Campaign URL Builder

Create analytics-ready URLs with required UTM validation, preset templates, and instant copyable output.

JSON to YAML Converter

Convert JSON to clean, two-space indented YAML for Kubernetes manifests, GitHub Actions, Docker Compose, and Ansible — free and fully client-side.

YAML to JSON Converter

Parse YAML into JSON with full block and flow syntax support. Ideal for Kubernetes, Docker Compose, and GitHub Actions configs.

JSON to CSV Converter

Flatten a JSON array of objects into a spreadsheet-ready CSV with header row, RFC 4180 quoting, and comma, tab, semicolon, or pipe delimiters.

CSV to JSON Converter

Convert CSV to a JSON array with header detection, type coercion, and RFC 4180 quoted-field handling. Supports TSV, semicolon, and pipe-delimited files.

JSON to XML Converter

Emit well-formed XML from JSON with a configurable root element, optional XML declaration, entity escaping, and pretty indentation.

XML to JSON Converter

Parse XML into JSON with attribute (@attr) and text-node (#text) preservation. Works with SOAP responses, RSS feeds, sitemaps, and legacy APIs.

Markdown Preview

Write Markdown and see a live HTML preview with reading time, word count, and a copyable HTML output — all client-side.

Text Diff

Compare two blocks of text line-by-line with additions, deletions, and unified diff output. Ideal for quick QA and copy reviews.

Random Sentence and Paragraph Generator

Generate random English sentences or full paragraphs for placeholder copy, writing prompts, design mockups, and reading-rate exercises. Pick how many sentences or paragraphs and regenerate on demand.

Acronym and Backronym Generator

Turn any phrase into an acronym (with stopword skipping and capitalization options) or expand a set of letters into a fresh backronym from a curated word pool.

Text Style Encoder (Pig Latin, Leetspeak, ROT13, Vigenère, more)

Transform text into Pig Latin, leetspeak (l337), reversed, ROT13, Vigenère cipher (encode/decode), mocking SpongeBob case, or w i d e spaced styles — all in one tool with one-click copy.

Find and Replace (Regex)

Find and replace text with literal or regex patterns. Case-sensitive, whole-word, multiline, dot-all, and Unicode-aware options. Supports capture groups ($1, $&, $`) in the replacement.

Readability Score Checker

Score any text against five standard readability formulas — Flesch Reading Ease, Flesch-Kincaid, Gunning Fog, SMOG, Automated Readability Index, and Coleman-Liau — with a single averaged grade level and word, sentence, and syllable stats.

Whitespace & Indentation Cleaner

Strip trailing whitespace, collapse blank lines, convert tabs ↔ spaces, normalize line endings, and clean up weird Unicode spaces — with before/after stats and full control over what gets touched.

Username Generator

Generate memorable, unique usernames using customizable patterns — adjective + noun, with optional numbers, separators, and casing. Get a batch at a time and copy your favorites.

Zalgo Text Generator

Glitch, distort, and corrupt any text with Zalgo-style combining marks. Adjust intensity, choose marks above, middle, or below, and copy ready-to-paste glitchy text for posts, bios, and games.

NATO Phonetic Alphabet Converter

Convert text to the NATO phonetic alphabet (Alpha Bravo Charlie) and back. Spell names and codes clearly on the phone, in radio comms, or anywhere clarity matters.

Fancy Text Generator

Convert plain text into 21 fancy Unicode styles — bold, italic, cursive, script, fraktur, double-struck, monospace, fullwidth, small caps, circled, strikethrough, underline, upside down, and more — copy any variant for bios, captions, and posts.

Character Counter with Platform Limits

Live character, word, byte, and grapheme counter with progress bars for X, Bluesky, Mastodon, LinkedIn, Instagram, YouTube, SMS, SEO meta tags, Discord, Slack, and more.

Text Line Tools

Sort, deduplicate, reverse, shuffle, trim, number, or prefix lines of text in one place. Case-insensitive options, blank-line removal, and per-line prefix/suffix wrapping included.

README Badge Generator

Build shields.io badges for npm, GitHub Actions, Docker, PyPI, license, coverage, and custom labels — with live preview and copy-ready Markdown, HTML, or URL output.

Markdown TOC Generator

Scan a Markdown document and generate a linked table of contents with adjustable heading depth, ordered or bullet lists, and GitHub-compatible anchor slugs.

Markdown Table Generator

Paste TSV, CSV, or pipe-separated rows and get a clean Markdown table with column alignment, header toggle, and compact mode — all in your browser.

HTML Minifier

Shrink HTML by removing comments, collapsing whitespace, and stripping noise — without breaking the contents of <pre>, <textarea>, <script>, or <style>. Reports byte savings instantly.

CSS Minifier

Compress CSS by stripping comments, collapsing whitespace, and removing redundant semicolons. Outputs production-ready CSS with byte savings reported.

JavaScript Minifier

Strip comments and unnecessary whitespace from JavaScript so it ships in fewer bytes — with string and regex literals preserved exactly. Runs entirely in your browser.

SQL Formatter / Beautifier

Format messy SQL into a readable, standard layout — uppercase keywords, one clause per line, indented JOINs and subqueries. Works with PostgreSQL, MySQL, SQLite, and SQL Server dialects.

URL Parser

Break any URL into protocol, host, port, path segments, query parameters, and fragment. Includes one-click decoding and a copyable JSON view for debugging redirects, deep links, and tracking URLs.

User Agent Parser

Paste any User-Agent string and instantly see the browser, engine, OS, device type, and version. Built for log triage, analytics QA, and bug reports.

HTML Tags Remover

Strip HTML tags from any block of text and keep only the readable content. Decodes entities, collapses whitespace, and is ideal for cleaning rich-text exports before reuse.

BBCode to HTML

Convert forum-style BBCode to clean HTML with safe tag handling. Supports bold, italic, underline, links, images, lists, code blocks, quotes, and color tags.

JSON Minifier

Strip whitespace from JSON to produce the smallest valid payload. Reports savings in bytes and percentage so you can see the impact instantly.

Cron Expression Builder & Explainer

Build cron schedules with a step-by-step picker, then read the plain-English explanation, the next runs in any IANA timezone, and ready-to-paste snippets for crontab, Kubernetes CronJob, Spring @Scheduled, AWS EventBridge, and GitHub Actions. Standard, 6-field, and Quartz dialects (with L, W, # specials) all supported.

Morse Code Translator

Translate text to Morse code and decode Morse back to letters. Supports letters, digits, punctuation, and word separators.

Caesar Cipher / ROT13

Encode and decode text with a classic Caesar shift cipher. Includes a slider, a ROT13 preset, and a brute-force preview of all 26 shifts.

YouTube Thumbnail Downloader

Download YouTube video thumbnails in HD (1280×720), SD, HQ, MQ, and default sizes from any watch, Shorts, youtu.be, embed, or live URL — instantly and free.

Credit Card Validator

Validate credit card numbers with the Luhn algorithm, detect the card brand, and compute the expected check digit — 100% client-side.

Typing Tutor

Practice typing with structured lessons, quick speed tests, or your own text. See your WPM and accuracy instantly. Supports English and Nepali — runs entirely in your browser.

Loan / EMI Calculator

Calculate the monthly payment (EMI) on a personal, auto, student, or business loan. Includes total interest, amortization schedule, and support for 10 currencies — all in your browser.

Compound Interest Calculator

Project investment or savings growth with compound interest — including monthly contributions, multiple compounding frequencies (daily, monthly, quarterly, yearly, continuous), and a year-by-year breakdown.

Mortgage Calculator

Estimate your full monthly mortgage payment with principal, interest, property tax, home insurance, and HOA. Shows loan-to-value, down-payment percentage, and flags low-down-payment PMI risk.

Tip & Bill Split Calculator

Compute the tip on a restaurant bill and split the total evenly across any number of people. Includes tip presets, round-up, and currency selection.

AWS ARN Parser

Paste any AWS Amazon Resource Name (ARN) and instantly see its partition, service, region, account ID, and resource. Flags malformed ARNs and links you to the matching AWS console page.

S3 URI / URL Parser

Convert between s3:// URIs, virtual-hosted URLs, path-style URLs, and ARNs for any Amazon S3 object. Extract bucket, key, region, and version ID, and generate ready-to-run aws-cli commands.

AWS IAM Policy Linter

Validate AWS IAM policy JSON and surface common misconfigurations — missing Version, conflicting Action/NotAction, Resource wildcards, publicly exposed Principals, and bad "service:Operation" names.

Hashtag Generator

Generate high-performing Instagram and TikTok hashtags from a single keyword — grouped into Safe Bets, Viral Potential, and Niche Gems, with caption keywords, trend and difficulty indicators, per-tag refresh, and a live social preview.

Safa — Clean Premium Adblocker

Safa is a clean, premium ad blocker for Chrome that blocks ads, trackers, and intrusive overlays — with no accounts, no sync, and no telemetry. Free, fast, and Manifest V3.

开发者为什么选择 UtilitySansar

每个工具都围绕三个原则设计：要快、要尊重你的数据、不要碍事。

100% 客户端运行

你的输入永远不会离开浏览器——不经过服务器。

零配置

打开工具，粘贴数据，复制结果。

无干扰

界面整洁、信息密集、随处支持键盘操作。