Paste anything. Get the right tool.
77 tools for domains, networks, files, code and Sri Lankan tax. Most run entirely in this tab.
Recon
What a domain exposes to the internet
9Subdomain finder
Every hostname a domain ever certified, from four public logs at once.
DNS lookup
Every record type for a hostname, over DNS-over-HTTPS.
Domain registration
Registrar, nameservers, expiry and status flags via RDAP.
Lookalike domain checker
Spot domains built to imitate another, with Cyrillic or invisible characters.
DNS propagation
Ask six independent public resolvers and see which have caught up.
TLS certificate inspector
Chain, expiry, key algorithm and every SAN on a live host.
Tech stack fingerprint
Identify the framework, CDN, analytics and CMS behind a site.
Security headers
Score response headers and get the exact line to add for each miss.
Robots and sitemap
Read robots.txt, expand every sitemap and count what is actually indexable.
Network
Addresses, ranges and throughput
7Speed test
Download, upload, latency and jitter, with an honest read on what your line can do.
Subnet calculator
CIDR to range and back, split a block, find the smallest block covering two IPs.
What is my IP
Your public address, network, rough location and whether it looks like a VPN.
ASN and IP intel
Owner, network and whether an address is a datacentre, VPN or mobile range.
Port reachability
Confirm one port is reachable from outside your network. One port per check.
MAC address vendor
Turn a MAC prefix into the manufacturer using a built-in vendor table.
User agent parser
Browser, engine, OS and device, with the lies in the string called out.
Why your email landed in spam
5Email deliverability audit
SPF, DKIM, DMARC, MTA-STS and BIMI, with the fix for every failure.
Email header analyser
Paste raw headers and trace every hop, delay and authentication result.
Disposable inbox
A readable address that receives mail for an hour. Receive only, never sends.
Blacklist check
Check an IP against the blocklists receiving mail servers actually consult.
SMTP conversation test
Watch a mail server’s opening handshake and what it advertises.
Crypto
Hashes, keys, tokens and certificates
11JWT decoder and verifier
Read header and claims, check expiry, verify the signature against your key.
TOTP tester
Generate live codes from a secret to debug 2FA without a phone.
Certificate decoder
Paste a PEM certificate or CSR and read every field without sending it anywhere.
Hash and HMAC
MD5, SHA-1, SHA-256, SHA-512 and HMAC over text or a file of any size.
Bcrypt
Hash a password at any cost factor, or check one against an existing hash.
Key pair generator
RSA, ECDSA and Ed25519 pairs in PEM and OpenSSH format.
One-time secret
A link that self-destructs after one view. Encrypted before it leaves the tab.
Encrypt a note
AES-GCM with a passphrase. Share the link, the key never touches a server.
Password breach check
Check a password against known breaches without ever sending it anywhere.
Password generator
Passwords and passphrases with a real entropy figure, not a colour bar.
UUID generator
v4 and v7 in bulk. v7 sorts by creation time, which your database wants.
Data
Move between structured formats
11Universal format converter
JSON, CSV, YAML, TOML, XML, SQL inserts and Markdown tables, any direction.
JSON Schema validator
Validate against a schema and get the exact path of every failure.
JSON workbench
Format, minify, validate, query with JSONPath and diff two documents structurally.
Diff
Character, word and structural diff. Compares meaning, not just lines.
SQL formatter
Readable SQL for Postgres, MySQL and SQL Server dialects.
curl converter
Turn a curl command into fetch, axios, Python, Go or Node.
Realistic test data
Realistic Sri Lankan or international rows as JSON, CSV or SQL inserts.
Fake API generator
Paste one record, get a real endpoint with pagination, sorting and filters.
Rate limit simulator
An endpoint that enforces real 429s, so you can test your backoff logic.
Webhook inspector
A throwaway URL that captures incoming requests in full, headers and body.
Base64
Encode and decode text, with the URL-safe variant browsers actually use.
Text
Inspect and reshape strings
7Unicode inspector
Find the invisible characters, homoglyphs and stray whitespace breaking your string.
Case converter
camelCase, snake_case, kebab-case, CONSTANT_CASE and Title Case in one pass.
Token and cost estimator
Estimate tokens and what a prompt costs across models, at your volume.
Text counter
Characters, words, lines, bytes and LLM tokens for the major models.
List operations
Sort, dedupe, shuffle and compare two lists, with operations chained in order.
Regex workbench
Live matching, plain English explanation, and a warning if it can hang.
Slug and transliterate
URL slugs from any script. Sinhala and Tamil are transliterated, not stripped.
Media
Images, PDFs, audio and video
8Image converter
HEIC, WebP, AVIF, PNG and JPG in any direction, without uploading anything.
Image compressor
Squeeze a file under a target size with a live before and after view.
EXIF viewer and stripper
See the GPS coordinates and camera hidden in a photo, then remove them.
PDF workbench
Merge, split, rotate, reorder and strip metadata, all in the browser.
PDF password
Add a password and permissions to a PDF, or remove one you already know.
Audio and video converter
Convert, trim, mute and pull audio out of video, with ffmpeg in your tab.
Background remover
Cut a subject out of a photo with a model that runs on your machine.
SVG optimiser
Strip editor cruft and excess precision, with every change itemised.
Web
Colour, icons and link previews
8CORS playground
Run the preflight a browser hides from you, from any origin you choose.
Link preview tester
See exactly how a URL will look on WhatsApp, X, LinkedIn and Facebook.
Favicon generator
Every icon size, the web manifest and the HTML to paste, from one image.
Palette contrast matrix
Every foreground and background pair in your palette scored at once.
Contrast checker
WCAG ratios, and the nearest passing colour that keeps your hue.
Colour converter
HEX, RGB, HSL and OKLCH, with a perceptually even shade ramp.
CSS generators
Fluid type with clamp(), layered shadows and easing curves you can preview.
QR code
Generate for a URL, wifi network or contact card, or read one from an image.
Time
Timestamps, schedules and timezones
4Timestamp converter
Unix seconds, milliseconds and ISO 8601 in any timezone at once.
Cron parser
A cron expression in plain English plus its next ten runs in your timezone.
Timezone planner
Find an hour that is inside working time for everyone on the call.
Date maths
Working days between two dates, and deadlines that skip weekends.
Finance
Sri Lankan tax, rates and lending maths
5Currency converter
Live rates against the rupee, with the source and update time shown.
Salary and APIT tax
Income tax, EPF, ETF and take-home pay on current IRD bands.
VAT calculator
Add or back out VAT at 18%, and check the registration threshold.
Loan and lease
Full amortisation, and what a flat quoted rate really costs you.
Fixed deposit
Maturity value, withholding tax and the effective annual rate.
Sri Lanka
Things no global tool site builds
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