All tech tools
38 free utilities across 7 categories. Everything runs in your browser — fast, private, no account needed.
Developer (15)
Format, encode, decode, convert and debug — the daily toolkit for engineers.
JSON Formatter & Validator
Beautify, minify, sort and validate JSON with exact error positions.
Base64 Encode / Decode
Encode text or files to Base64 and decode back — UTF-8 and URL-safe.
URL Encode / Decode & Parser
Percent-encode strings, decode URLs and break a URL into its parts.
JWT Decoder
Inspect JSON Web Token header and payload, with expiry check.
UUID / GUID Generator
Bulk-generate v4 random or v7 time-ordered UUIDs.
Hash Generator (MD5, SHA-256…)
Live MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes of any text.
Regex Tester
Test JavaScript regular expressions with live highlighting and groups.
Unix Timestamp Converter
Convert epoch seconds/milliseconds to dates and back.
Cron Expression Explainer
Translate cron schedules to plain English and preview next runs.
Text Diff Checker
Compare two texts line-by-line or word-by-word.
HTML Entity Encoder / Decoder
Escape < > & and quotes, or decode entities back to text.
Case Converter
camelCase, snake_case, kebab-case, Title Case and more.
Number Base Converter
Decimal ⇄ hex ⇄ binary ⇄ octal with big-number support.
YAML ⇄ JSON Converter
Convert Kubernetes/CI YAML to JSON and back.
JSON ⇄ CSV Converter
Turn JSON arrays into spreadsheets and CSV into JSON.
Security (3)
Generate and audit passwords, hashes and QR codes without uploading a byte.
Network & IT (5)
IP, DNS, subnets, user agents and HTTP — diagnostics for sysadmins and support teams.
What Is My IP Address
See your public IP, ISP, location and time zone.
DNS Lookup
Query A, AAAA, MX, TXT, NS, CNAME, CAA and more records.
Subnet / CIDR Calculator
Network, broadcast, host range and mask for any IPv4 CIDR.
User-Agent Parser & Browser Info
Parse any user-agent and see your screen, viewport and device details.
HTTP Status Codes Reference
Searchable list of 1xx–5xx codes with plain-English meanings.
Web & SEO (3)
Meta tags, robots.txt and campaign links for marketers and site owners.
Text & Writing (3)
Count, clean, sort and generate text for docs, posts and data entry.
Design & Images (6)
Colors, contrast, gradients, shadows and on-device image compression.
Color Converter & Shades
HEX ⇄ RGB ⇄ HSL with a 9-step tint and shade palette.
Color Contrast Checker (WCAG)
Check text/background contrast against WCAG AA and AAA.
CSS Gradient Generator
Linear, radial and conic gradients with copy-ready CSS.
CSS Box Shadow Generator
Visually tune offset, blur, spread, opacity and inset shadows.
Image Compressor & Resizer
Compress and resize JPG/PNG/WebP on your device — batch.
Image to Base64
Convert images to data URIs for CSS, HTML and email.
Calculators (3)
Data sizes, download times and aspect ratios worked out instantly.