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A sea of online tools

101 free tools for PDFs, images, text, developers and everyday tasks. No sign-up, no watermarks, no waiting.

  • Most tools run in your browser
  • No ads
  • No watermarks, no quality loss
  • Files up to 500 MB
  • Instant results
  • No account needed

Every tool

All 101 of them, nothing held back behind a paid tier.

Developer Tools 13 tools

All Developer →

Format and validate JSON, encode and decode Base64 and URLs, decode JWTs, test regular expressions, and generate hashes and UUIDs.

Network Tools 17 tools

All Network →

Look up IP addresses, DNS records, WHOIS registration and SSL certificates, check domain availability, validate email and detect VPNs and p…

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What Is My IP See the public IP address your connection is using right now, along with your provider, con…
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IP Address Lookup Look up any public IP address: country, region, city, coordinates, time zone, currency, and…
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DNS Lookup Look up live DNS records for any domain — A, AAAA, MX, NS, TXT, SPF, CNAME and SOA. Queried…
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WHOIS Lookup Look up a domain's registration record: when it was created, when it expires, which registr…
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SSL Certificate Checker Inspect the live TLS certificate a domain serves: when it expires, who issued it, and exact…
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Domain Availability Checker Check whether a domain name is free to register. Asks the registry directly, so a parked or…
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Email Validator Check whether an email address can actually receive mail. Tests syntax, the domain and its…
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VPN & Proxy Detector Check whether an IP address belongs to a VPN, proxy, Tor exit node, private relay or hostin…
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IP WHOIS Lookup Find which organisation holds an IP block, the range it belongs to, and the registered abus…
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Subdomain Finder Find subdomains observed for a domain, each with the dates it was first and last seen, so y…
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IP Reputation Report One report covering an IP address: location, network, reverse hostname, threat signals and…
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ISP & Connection Type Lookup Identify the provider behind an IP address and what kind of connection it is: residential,…
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Subnet Calculator Work out the network, broadcast and usable host range for any IPv4 CIDR block, and split a…
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User Agent Parser Paste a user-agent string to identify the browser, engine, operating system and device, and…
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IPv4 Calculator Convert an IPv4 address between dotted, decimal, binary and hex, convert CIDR to a subnet m…
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IPv6 Calculator Expand or compress an IPv6 address to RFC 5952 form, work out prefixes and subnet counts, b…
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Port Checker Check whether a TCP port on a public host accepts connections from outside your network, an…

Date & Time Tools 1 tools

All Date & Time →

Convert Unix timestamps to readable dates and back — seconds, milliseconds and microseconds, ISO 8601, your own timezone and ISO week numbe…

Data Tools 15 tools

All Data →

Convert and clean CSV, JSON, XML and YAML.

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CSV to JSON Convert CSV to JSON in your browser. Choose objects, arrays or columns, optionally type num…
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JSON to CSV Convert JSON to CSV in your browser. Flattens nested objects into columns, handles ragged r…
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CSV Viewer Open a CSV and read it as a proper table in your browser. Detects the delimiter, paginates…
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Remove Duplicate Rows from CSV Find or remove duplicate CSV rows in your browser. Match on chosen columns, ignore case and…
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Merge CSV Files Combine several CSV files into one in your browser. Matches columns by name even when files…
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CSV to HTML Table Turn CSV into a clean HTML table in your browser. Proper escaping, optional header row, and…
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Split CSV File Split a large CSV into several files in your browser. By row count, into equal parts, or on…
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Sort CSV by Column Sort CSV rows by one or more columns in your browser. Natural, numeric and alphabetical ord…
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CSV to Markdown Table Turn CSV into a GitHub-flavoured Markdown table in your browser. Aligned columns, escaped p…
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TSV to CSV Convert tab-separated text to CSV in your browser. Paste straight from Excel, Sheets or Num…
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Remove or Reorder CSV Columns Keep, drop or reorder CSV columns in your browser. Select by heading, position or range — a…
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Change CSV Delimiter Convert a CSV between comma, semicolon, tab and pipe separators in your browser. Re-quotes…
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CSV to SQL Turn CSV into SQL INSERT statements in your browser. MySQL, PostgreSQL, SQL Server and SQLi…
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XML to CSV Convert XML to CSV in your browser. Finds the repeating record element automatically, flatt…
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CSV to XML Convert CSV to valid XML in your browser. Column names become legal element names, values a…

Finance Tools 1 tools

All Finance →

Convert between 50 world currencies, gold, silver and crypto at live mid-market rates, with the timestamp shown on every quote.

Most files never leave your device

Most TooloSea tools do their work entirely inside your browser. When you compress an image or format a JSON file here, the data never travels to a server — there is nothing for us to store, log or leak, because we never receive it in the first place.

A few tools genuinely need a server: looking up a domain record, for example, has to happen from somewhere with a network connection. Those tools say so plainly on the page, tell you exactly what is sent, and delete anything temporary within the hour.

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