Tool list

Free IP geolocation lookup. Instantly find the location, country, and city of any IP address. Accurate and fast IP tracking tool.

Query the geolocation of a China cellphone number.

Online Chinese ID number validator and checker. Verify the format, region, birthday, gender and checksum of a China Resident Identity Card number.

Online Hong Kong Identity Card (HKID) number validator and checker. Verify the format and checksum of Hong Kong Identity Card numbers.

Complete ASCII code table. Search and reference ASCII values for characters, symbols, and control codes. Essential reference for developers.

Generate hash value (md5/sha1/sha256/sha512) for input string or file.

Encrypt or decrypt text with AES (GCM/CBC/CTR) or RSA-OAEP (SHA-1/SHA-256/SHA-384/SHA-512). Input is plaintext to encrypt or Base64 ciphertext to decrypt. Pass keys via the key option (AES: Base64 raw; RSA: PEM private key) and publicKey option (RSA: PEM public key); if the user references a saved key by label, memory_recall it first.

Free online Base64 encoder. Convert text strings or files to Base64 format instantly. Secure, client-side encoding for developers and data processing.

Free online Base64 decoder. Convert Base64 strings back to original text or binary files. Secure, client-side decoding with instant results.

Generate random string, number, and more.

Generate UUID string, number, and more.

TOTP Generator for two-factor authentication (2FA). The "input" field accepts either a raw Base32 secret key OR a label/name previously saved in memory (via memory_save). If the user says something like "TOTP for <label>", use memory_recall first to retrieve the saved secret, then call this tool with the actual secret.

Free online video merger. Join multiple video or audio clips into a single file (MP4, WebM, MKV, MOV). Seamlessly combine media with custom codec settings. Secure, client-side processing with no file uploads.

Free online media converter. Convert video and audio files (MP4, WebM, MKV, MOV) directly in your browser. Extract audio, change codecs (H.264, HEVC, VP9), and adjust quality securely without uploading files.

Convert video and audio files to text directly in your browser. Supports multiple languages and translation to English.

Extract text from images directly in your browser. Supports English and Chinese.

Generate QR code from text, URL, WiFi, and more.

Extract all images from PDF files online. Free, fast, and secure — runs in your browser with no file upload.

Extract all images from Word DOCX and DOC documents online. Free, fast, and secure — runs in your browser with no file upload.

Convert documents between formats (DOCX, HTML, Markdown, EPUB, etc.) entirely in your browser. Powered by Pandoc WASM.

Convert date time to timestamp and vice versa.

Free online JSON viewer and formatter. Visualize, validate, and format JSON data in a readable tree view. Essential tool for debugging and API development.

Validate JSON data.