TOOLS
Free online tools
Everything runs in your browser. No upload. Pick a tool and go.
31 tools
/tools/keyboard-test
Keyboard test
Check each key, hold combinations, and see exactly which signals reach your browser.
Start testing →
/tools/mouse-test
Mouse test
Check mouse buttons, scrolling, click timing and movement in one workspace.
Test your mouse →
/tools/json-formatter
JSON formatter / validator
Online JSON formatter: beautify, minify, and validate—locally in your browser.
Open JSON formatter →
/tools/xml-formatter
XML formatter
Beautify, minify, and validate XML in your browser.
Open XML formatter →
/tools/markdown
Markdown preview
Markdown preview: edit on the left, live HTML on the right.
Open Markdown preview →
/tools/csv-json
CSV ↔ JSON
Convert CSV to JSON and JSON to CSV online.
Open CSV JSON →
/tools/base64
Base64 encode / decode
Online Base64 encode and decode for text in one click.
Open Base64 →
/tools/url-encode
URL encode / decode
URL encode and decode for query strings and path segments.
Open URL encoder →
/tools/html-encode
HTML encode / decode
Escape and unescape HTML entities like < > &.
Open HTML encoder →
/tools/hash
Hash generator
Online hash generator: SHA-1 / SHA-256 / SHA-512 in your browser.
Open hash tool →
/tools/jwt-decoder
JWT decoder
Decode JWT header and payload online (signature not verified).
Open JWT decoder →
/tools/word-counter
Word counter
Word counter: live word, character, line counts and reading time.
Open word counter →
/tools/case-converter
Case converter
Convert text to UPPER, lower, Title Case, or sentence case.
Open case converter →
/tools/sort-lines
Sort lines
Sort, dedupe, reverse, or shuffle lines of text.
Open sort lines →
/tools/diff
Text diff checker
Compare two texts line by line and spot additions or removals.
Open text diff →
/tools/regex
Regex tester
Test regular expressions with live matches and highlights.
Open regex tester →
/tools/find-replace
Find and replace
Find and replace text with optional regex support.
Open find replace →
/tools/lorem
Lorem ipsum generator
Generate placeholder paragraphs of classic lorem ipsum.
Open lorem generator →
/tools/password
Password generator
Generate strong passwords with length and charset controls.
Open password generator →
/tools/uuid
UUID generator
Free UUID generator — create v4 IDs in bulk.
Open UUID generator →
/tools/qr-code
QR code generator
Free QR code generator: enter text or a URL, download a PNG.
Open QR generator →
/tools/slugify
URL slug generator
Turn titles into SEO-friendly URL slugs.
Open slugify →
/tools/meta-tags
Meta tag generator
Generate SEO meta, Open Graph, and Twitter tags.
Open meta generator →
/tools/color-picker
Color picker
Color picker with HEX / RGB / HSL conversion and preview.
Open color picker →
/tools/timestamp
Unix timestamp converter
Convert Unix seconds/millis to dates and back.
Open timestamp converter →
/tools/number-base
Number base converter
Convert between binary, octal, decimal, and hexadecimal.
Open number converter →
/tools/cron
Cron expression explainer
Explain five-field cron schedules in plain language.
Open cron explainer →
/tools/roman
Roman numerals converter
Convert between Arabic and Roman numerals.
Open Roman converter →
/tools/aspect-ratio
Aspect ratio calculator
Simplify width × height into a clean aspect ratio.
Open aspect ratio →
/image-editor
Online image editor
Crop, filters, ID photos, batch export—processed locally in your browser.
Open image editor →
it-tools.smartaicode.com
IT Tools (collection)
More developer utilities: encode/decode, hash, JWT, timestamps, UUID, and more (open-source external).
Open IT Tools →