Free online random phone number generator supporting 208 countries. Batch generate realistic virtual phone numbers with custom prefix, suffix, and country code. Export to Excel or TXT instantly.

Powerful online random name generator and picker tool. Generate unique Chinese or English names from a vast list. Customize surname, gender, name length, and export your random name list (e.g., 500, 1000 names) to Excel or TXT.

Online tool for converting between Simplified and Traditional Chinese, Hong Kong Traditional, Taiwan Traditional, Taiwan dialect, and Japanese Shinjitai.

Real-time Gaokao countdown with official MOE exam dates. Custom timer for CET/Postgraduate exams. Precision time management tool for 10M+ Chinese students

Powerful free online tool to convert Chinese characters (Hanzi) to Pinyin. Supports multiple styles including Pinyin with tones (zhōng), tone numbers (zhong1), initials, Bopomofo, Wade-Giles, and more. Handles heteronyms, custom separators. A great helper for learning and processing Chinese Pinyin.

Convert Chinese Yuan amounts between numeric and uppercase Chinese formats online. Supports both directions, handles yuan/jiao/fen units automatically, and follows official financial document standards. Free to use.

Powerful and easy-to-use online Chinese idiom (Chengyu) dictionary. Search idioms by first character, Pinyin (with/without tones), or containing words. Quickly find Pinyin, detailed meanings, origins, and examples to help you learn and use Chinese idioms effectively.

Explore our interactive Periodic Table to find chemical elements with their atomic number, symbol, name (including Chinese Pinyin for learners), atomic mass, and classification (metals/nonmetals). A great tool for chemistry students and enthusiasts.

Free online tool to convert coordinates between WGS84 (GPS), GCJ02 (Mars Coordinates/Chinese State Bureau of Surveying and Mapping), and BD09 (Baidu Coordinates). Batch process latitude and longitude data accurately. A handy utility for map development and GIS tasks.

An online tool for detecting sensitive words in text. Lists all detected sensitive words and replaces them with '*'.

Comprehensive Windows 10 and 11 keyboard shortcut guide covering copy, paste, switch, refresh, screenshot, and other essential commands to boost productivity and efficiency.

Preview videos online by entering a URL—no download needed. Supports MP4, WebM, and other common formats. Quickly verify video links for developers, creators, and testers.

Free online text case converter tool. Quickly convert English letters to uppercase or lowercase. Simple operation, instant conversion, improve text processing efficiency.

A professional free online electronic signature maker offering both hand-drawn and text-generation modes. It operates entirely locally in your browser, ensuring no data is uploaded for maximum privacy. Features include customizable brush colors, sizes, and calligraphy fonts with advanced stroke algorithms. Easily export as transparent PNG or white-background JPG for Word, PDF, and contract signing.

Free online word counter that counts words and characters in real time. Supports Chinese characters and English words, with an option to include or exclude spaces and newlines. Ideal for writing, editing, and content checks.

Preview images online by entering a URL—no download required. Supports common formats and helps quickly verify image links for developers, designers, and creators.

Free online math drill tool for grades 1–4. Practice addition, subtraction, multiplication, and division with auto-grading and history tracking. Boost calculation skills anytime.

This tool enables easy access to national capital information, enhancing your global geographic knowledge for study, work, and travel purposes.

Generate random temperatures and save the results to a file

Format text paragraphs, support automatic line breaks at numbered points, and organize line breaks and spaces.

List of 985, 211, and Double First-Class universities in China. Query the university list.

Online text deduplication tool that quickly removes duplicate lines from your text. Supports multiple separators including line breaks, commas, semicolons, and vertical bars. Optionally remove empty lines. Ideal for data cleaning, list organizing, and keyword deduplication with instant copyable results.

Free browser speech synthesis tool based on Web Speech API for real-time text-to-speech conversion. Supports Chinese and multiple languages, integrated with Microsoft voice technology. No download or installation required, use directly in browser. Suitable for learning assistance, accessibility reading, content presentation and other scenarios. Provides high-quality online TTS service.

Preview audio online by entering a URL—no download needed. Supports MP3, WAV, OGG, and other common formats. Quickly verify audio links for developers, creators, and testers.

Discover information on the start and end dates, significant events, notable figures, and more from the extensive five thousand years of history in China.

Add pinyin above Chinese text in textbook ruby style. 8 formats: tone marks, Bopomofo and more. Export as image, rich text, or HTML code. Free to use online.

Avoid unnecessary downloads! Preview images, videos, audio, PDFs & text files directly in your browser. Just enter a URL—save time and storage. Supports common formats.

Free online title case converter tool. Supports Title Case, Sentence Case, Smart Title formatting and other conversion modes. Bulk process multiple lines of text, simple operation, improve writing and editing efficiency. Suitable for article titles, news headlines, content formatting and other scenarios.

Free online Chinese and English punctuation converter. Switch between full-width and half-width symbols instantly with real-time text highlighting updates.

Professional online tool to generate software multi-instance batch scripts for Windows. Easily create custom .bat files for WeChat, QQ, and more. Enter the app path and instance count to generate, copy, or download scripts instantly. Increase productivity by managing multiple accounts safely. A free, user-friendly automation tool designed for seamless software cloning on your PC.

Free online screen color picker. Click to sample any color on your screen and instantly get HEX, RGB, HSL, HSV, and CMYK values. One-click copy for designers and developers.

Practice arithmetic online with addition, subtraction, multiplication, and division. Choose ranges and question counts, get instant feedback, review results.

Free online mortgage calculator. Enter loan amount, annual rate and term to instantly get monthly payment, total interest and total repayment. Compare equal installments vs equal principal, support housing fund and combination loans, generate a full amortization schedule and export to Excel.

Free online color format converter supporting HEX, RGB, HSL and RGBA conversion. Features a visual color picker, preset swatches, real-time preview, and one-click copy for each format.

Mirror and control your Android phone directly in Chrome or Edge using WebUSB—no client installation required. Enjoy low-latency screen mirroring with keyboard and mouse control, fullscreen mode, screenshots, screen recording and file transfer. Optimized from PANDASCRCPY for Android development, debugging, testing, demos and remote assistance.

Free text replace tool for batch find and replace online, supporting plain text, regex patterns and multiple rules in sequence. Ideal for version updates, copy changes and data formatting with one-click copy.

Convert JPG, PNG, WebP, and BMP images to a single PDF online for free. Choose A4 portrait, landscape, or image-sized pages, and reorder pages by dragging. Everything runs in your browser — files are never uploaded. Preview and download instantly.

Free online PDF compressor that shrinks PDF files entirely in your browser — no upload, privacy-friendly. Batch compression, three quality presets plus custom sharpness and encoding, before/after preview, and one-click ZIP download.

Merge multiple PDFs into one file in your browser, in the order you choose. No upload. Drag to add and reorder, preview before and after merge, then download — for contracts, handouts, and submissions.

Share files and text between phones, computers, and tablets on the same WiFi or hotspot. Scan a QR code to connect directly device-to-device without a server, cable, or sign-up. Supports multiple files, auto-download, and batch download for fast, private transfers.

Convert PDF pages to PNG or JPG images online for free. Choose 72–300 DPI resolution, pick page ranges, and adjust JPEG quality. Everything runs in your browser — files are never uploaded. Download images individually or as a ZIP.

Sign PDFs in your browser: draw a signature or upload a signature image, drag to position, resize it, and choose which pages to sign, then download or ZIP multiple files with no server upload. Image-based, not a legally binding e-signature.

Free online PDF splitter. Extract specific pages, split by page ranges, every N pages, or by file size. Everything runs locally in your browser, with ZIP batch download.

Convert a whole PDF into a single vertical long image. Choose JPEG or PNG, set resolution and page range, and adjust JPEG quality. Runs entirely in your browser with no upload, great for mobile viewing and sharing.

Add text or logo watermarks to PDFs free online, in batch. Choose tile, center, 3x3 grid, or corners layouts, adjust size, color, opacity, and rotation, set a page range, preview instantly — all processed locally in your browser.

Free online PDF organizer that runs entirely in your browser with no server upload. Drag pages to reorder, rotate, delete, and export selected pages to a new PDF, with thumbnail previews for source and result on desktop and mobile.

Extract text from PDF files right in your browser, keeping page breaks and reading order. Add multiple files for automatic extraction, then copy or download the result as TXT with no server upload. Text-layer PDFs only; scanned files have no extractable text.

Add page numbers, headers, and footers to PDFs right in your browser. Choose formats like "Page X of Y", Roman or Chinese numerals, and customize position, starting number, font size, color, and margin, with a live preview and batch processing.

Unlock PDF files in your browser by entering a known password to remove encryption, opening restrictions, and permission limits. Batch-process multiple files, download results individually or as a ZIP, with no server upload.

Extract embedded images from PDF files online in bulk. Auto-deduplicate, filter small icons by minimum size, preview thumbnails, download individually or pack all into a ZIP. Runs fully in your browser with no upload.

Free online PDF encryption with AES-256, processed entirely in your browser. Set an open password, restrict printing, copying, and editing, encrypt multiple PDFs in batch, and download results individually or as a ZIP.