Công cụ mở là dùng được ngay
Tập hợp những việc nhỏ bạn làm suốt ngày: định dạng JSON, nén ảnh, đổi timestamp, kiểm tra điểm chết màn hình. Không cần đăng ký, không phải chờ tải lên.
Công cụ phổ biến
116 công cụJSON Formatter
Format, validate and minify JSON
Base64 Encode
Encode text into a Base64 string
Image Compressor
Shrink images and compare the result side by side
JWT Parser
Decode the header and payload of a token
Unix Timestamp Converter
Timestamps to dates and back, seconds or milliseconds
Hash Generator
MD5, SHA-1, SHA-256 and SHA-512 at once
Color Converter
Convert colors between HEX, RGB and HSL, check contrast
QR Code Generator
Turn text or a link into a QR code
Duyệt theo danh mục
Văn bản
10Capitalize Text
Capitalize the first letter of words or sentences
Case Converter
UPPER, lower, Title, camel, snake and more
Character Counter
Count characters, words and lines
Text Diff
Compare two versions of a text
Lorem Ipsum Generator
Placeholder text by paragraph, words or list
Markdown to HTML
Convert Markdown source into HTML
Remove Duplicate Lines
Deduplicate lines, keeping the first hit
Remove Empty Lines
Delete blank lines from text
Xổ số
4Tiền tệ & tài chính
3Tính toán thường ngày
1Lập trình
35Base64 Decode
Decode Base64 back into readable text
Base64 Encode
Encode text into a Base64 string
Base64 to File
Turn Base64 content back into a downloadable file
CIDR Calculator
Network address, mask and host count from a CIDR block
Color Converter
Convert colors between HEX, RGB and HSL, check contrast
Cron Generator
Build a cron expression without memorising the syntax
Cron Parser
Explain what a cron expression actually means
CSS Formatter
Expand minified CSS into indented rules
JSON / Dữ liệu
16CSV to JSON
Convert CSV rows into a JSON array
JSON Diff
Compare two JSON documents
JSON Escape
Escape a string for embedding in JSON
JSON Flatten
Turn nested JSON into flat keys
JSON Formatter
Format, validate and minify JSON
JSON Minifier
Strip every space and newline from JSON
JSONPath Extract
Pull values out of JSON with JSONPath
JSON Sort Keys
Sort object keys alphabetically
Hình ảnh
22Base64 to Image
Turn a Base64 string into a viewable image
Image Compressor
Shrink images and compare the result side by side
Batch Image Compressor
Compress many images at once, per-file status
Image Crop
Crop an image to the area you need
Flip Image Horizontally
Mirror an image left to right
Flip Image Vertically
Mirror an image top to bottom
Image Format Converter
PNG, JPEG and WebP with a live size comparison
Barcode Generator
Turn text or numbers into a barcode image
Web / SEO
14Meta Description Length
Check description length for search results
Heading Structure Check
Check H1–H6 order for SEO
Open Graph Generator
Generate Open Graph tags
Robots.txt Checker
Inspect a robots.txt file
robots.txt Generator
Build a robots.txt file
Schema.org Generator
Generate JSON-LD structured data
SERP Preview
Preview how a result looks in search
Sitemap Checker
Inspect a sitemap.xml
YAML / Cấu hình
5Phần cứng
6Dead Pixel Test
Full-screen colors to spot dead or stuck pixels
Gamepad Test
Check buttons, sticks and triggers
Keyboard Test
See which keys actually register
Microphone Test
Check your mic level in real time
Mouse Test
Buttons, wheel and pointer position
Refresh Rate Test
Estimate your display's real refresh rate